The Apple iPhone is one of the most popular and widely used smartphones in the world due to its easy-to-use operating system, exceptional security system, flawless design, and outstanding cameras. According to the most recent statistics, 30.44% of smartphone users worldwide use an Apple iPhone, which means that more than three out of four smartphone users own an Apple iPhone.

If you are an iPhone user or technician, you might have come across an 'Unknown Part' warning message on your camera or your customer. This message is an important camera message that can appear from the iPhone 12 and later series. It can be quite alarming for iPhone owners, and it might affect the device's performance, causing trouble in taking photos. In this article, we'll discuss what this message means, how to solve it, and how to prevent it from appearing on your iPhone camera.

Why is My iPhone Showing the Unknown Part of the Camera?

The Apple iPhone has one of the best cameras on the market. There are a number of possible reasons why an unknown part issue could occur.

• Manufacturing Defect: This kind of problem could happen during the production process, a camera may contain a part that has been incorrectly included or installed. It may occur as a result of human error or a quality control issue. Even a number of iPhone 14 users have reported this problem.
• Software Glitch: While Apple regularly updates its IOS operating system with new features and bug fixes, this issue may arise as a result of new policies or bugs within the software. The problem has been reported by some Apple users on Apple's community forum after the phone was upgraded to the newest operating system.
• Modification or Repair: Either the original or third-party rear camera replacement can cause this issue to appear.

How to check your iPhone's parts and service history

Users of Apple devices have the ability to view their iPhone parts and service history. If you would like to determine which components of your iPhone are genuine, please go to settings > General > About > PARTS AND SERVICE HISTORY history. It is possible that the results of parts and service history can vary depending on the iPhone model and IOS version. The complete list can be found on Apple's official website.

What to look for in the service history to diagnose the Unknown Part warning issue

If you are experiencing the "important camera message" on your iPhone camera, you can check the service history to diagnose the problem. Look for any different messages related to your iPhone camera, display message, parts, and battery. Check when the last software update was done and whether any replacement parts were installed. The service history will reveal which parts have been replaced or repaired on your iPhone and not original part of Apple.

Does the service history show all parts that have been replaced or repaired on my iPhone?

Yes, the service history shows all the parts that have been replaced or repaired on your iPhone. It is useful in diagnosing the 'Unknown Part' warning issue and can guide you on how to repair it.

How to fix the 'Unknown Part' warning on your iPhone Camera

Despite what we have said previously, it does not have an adverse effect on usability. However, if you are concerned and would like to fix the problem, there are some methods that can be used according to the situation. 

If you've got an important message on your iPhone Camera, you can rectify it by replacing the affected part with an original OEM part. Here's a step-by-step guide on how to resolve the issue:

• Go to the Apple support website and find a service center or authorized repair shop near you.
• Take your iPhone to the service center or authorized repair shop and request an original OEM replacement part.
• Wait for the repair to be done and ensure that the 'Unknown Part' warning message no longer appears on your iPhone Camera.

Note: You can check the warranty status of your iPhone online. If the warranty has expired, you will need to pay a service fee to have the repair done. It's important to note that the service fee may vary depending on the model of your iPhone.

Repair the "Unknown Part" Message After Replacing iPhone Rear Camera

In a study conducted by REWA Technology, it has been found that 99% of the rear cameras on the market are produced by Apple OEM factories. We have therefore made a video tutorial based on our experience and expertise in order to assist our honorable customers in solving this common problem.

In this video tutorial we used iPhone 12 to perform this repair. Please watch the full video below for a better understanding.

Preventing the 'Unknown Part' warning from appearing on your iPhone Camera

Tips to extend the lifespan of your iPhone Camera and its components

You can prevent the 'Unknown Part' warning from appearing on your iPhone camera by taking the following steps:

• Avoid using low-quality third-party parts and accessories with your iPhone.
• Update your iPhone's software to the latest iOS version regularly.
• Avoid dropping, wetting, or exposing your iPhone to extreme temperatures.
• Use iPhone-compatible charging cables and adapters.
• Avoid overcharging your iPhone battery and try to maintain it between 20-80% battery life.

Frequently Asked Questions

What does the warning indicate about my iPhone's performance?

The important camera message indicates that iPhone is unable to be verified. In spite of the fact that this does not affect the usability of your iPhone camera, you can continue to use it to take photos and videos as before. 

Is it safe to continue using my iPhone Camera after getting the 'Unknown Part' warning?

While you can still use your iPhone camera after getting the 'Unknown Part' warning, it is not advisable. The warning indicates that there is an issue with the camera's hardware, and it may affect your device's performance in the long run. As such, it is recommended that you fix the problem as soon as possible.

Can I repair the issue on my own, or do I need professional help?

Attempting to correct the Unknown Part warning issue on your own is not advisable, as it can potentially damage your device further. Instead, you should seek the help of a professional or an authorized repair shop.

What parts of the iPhone are most likely to cause the 'Unknown Part' warning message?

The parts of the iPhone that are most likely to cause the 'Unknown Part' warning message are the battery, screen, and camera modules. These components are functionally essential, and if they are not original or are not working correctly, they can cause the warning message to appear.

When to update your iPhone's software to prevent the 'Unknown Part' warning

It is suggested that you update your iPhone's software to the latest iOS version regularly, as new software updates usually fix bug issues, which might prevent the 'Unknown Part' warning from appearing on your iPhone camera.

What are some signs that the 'Unknown Part' warning indicates a more serious issue?

Suppose you experience other issues with your iPhone, such as a crashing app or an unresponsive screen. In that case, it may indicate that the 'Unknown Part' notification is related to a more serious issue. In such cases, it is recommended that you visit the Apple Store or seek professional help to diagnose and fix the issue.

How can I know if my iPhone is still covered by warranty?

You can check if your iPhone is still covered by warranty by going to the Apple website, clicking on 'Check Coverage,' and entering your device's serial number. The website will indicate if your device is still covered by warranty or not.

What to expect when taking your iPhone to the Apple Store or professional repair service

When you take your iPhone to the Apple Store or professional repair service, you can expect a thorough inspection of your device to diagnose the cause of the 'Unknown Part' warning. If the matter is related to a replaceable part, they will replace it with an original OEM part. The replacement cost will depend on whether your device is still covered by warranty or not.

Conclusion: 

We at REWA Tech are always pleased to share new and innovative products as well as guides that could assist professionals in repairing or solving any problem. As shown above, REWA LAB has shared the latest solution for solving the "Unknown Part" message on the repair market. Feel free to share your opinion and stay tuned to REWA Technology. 

Are you facing battery issues with your iPhone 12 Mini? Does your phone's battery life seem to be significantly shorter than when you first bought it? If so, it may be time to replace the battery. In this article, we will provide a step-by-step guide to replacing the battery in your iPhone 12 Mini. We will also introduce an innovative method that uses REFOX pre-programmed battery tag-on flex cable to make the process more efficient and convenient.

Why Replace Your iPhone Battery?

iPhone batteries are designed to retain 80% of their capacity for up to 500 charge cycles, which typically lasts for around 18-24 months for most users. However, as time passes, the battery in your phone may degrade, causing it to lose its ability to hold a charge. This can lead to shorter battery life and slower performance.

Replacing the battery in your iPhone can help to restore its performance and extend its lifespan. With a new battery, your phone will be able to hold a charge for longer and perform better.

Tools to Follow this Guide

It is important to have the right tools on hand when following a guide for repairing an iPhone battery or display. We have used a number of tools and repair parts in this guide to make our work more efficient and time-saving. The following is a list of the resources we used.

• REPART iPhone 12 Mini Battery
• REFOX RP30 Battery Detection Module & Tag-on Cables
• REPART iPhone Battery Cell Replacement - Standard Capacity
• REFOX Mobile Phone Battery Welding Fixture
• REFOX RS52 Cell Phone Screen Holder
• REFOX Mobile Phone Battery Welding Fixture
• Ceramic Scissor
• Grinding Pen
• Spot Welder

With these tools and more, it is possible to successfully and efficiently repair an iPhone battery. In addition, all the tools and parts can be found on the REWA Shop.

How to Replace iPhone Battery

It can be complicated to replace the battery in an iPhone 12 Mini. The good news is that with the right tools and an appropriate guide, anyone can replace an iPhone battery successfully. In addition, we used innovative methods and advanced tools in this guide in order to increase success rates. Please find below a step-by-step guide that will assist you:

Step 1: Remove the Battery

The first step in this guide is to separate the old battery from the iPhone 12 Mini. In order to accomplish this, we used the REFOX RS52 Cell Phone Screen Holder. As soon as the battery has been removed, it is important to peel off the protective tape and remove the bracket. 

Step 2: Remove the Battery BMS Board

The next step is to remove the battery BMS board.  To separate the BMS board, remove the protective tape carefully, remove the bracket, and use ceramic scissors to disconnect the anode and cathode. 

Step 3: Gringding And Soldering

Now you need to use a grinding pen to grind the solder point. Put the battery cell into the welding clamp fixture, and settle the cathode lead and anode lead under the BMS board. Be sure to align the anode and cathode leads respectively. After aligning the battery leads, solder them with the spot welder. After soldering the leads, fold them well and put them on the protection bracket. Then, wrap another layer of protection tape around the outside. Connect the tag-on flex to the battery and fold it to the right position as shown below. 

Step 4: Install the New Battery

Install the new battery back into your iPhone 12 Mini and turn it on.

Step 5: Check Battery Health

Click "Settings>Battery>Battery Health & Charging" and then check the battery condition. You should see that the maximum capacity is 100%.

Note: In order to boot up, you must connect the power cable or use the same type of battery

The New Method

In the past, it was necessary to operate through a programmer, battery detection modules, and tag-on flex to restore battery health and cycle time. However, with the new REFOX pre-programmed battery tag-on flex, the process has become more efficient and convenient.

The new method for battery data repair with iPhone 12 Mini battery cell replacement is similar to the previous method. The main purpose is to transplant the original Battery BMS board to solve the pop-up message, which allows the phone to detect the same battery code as the original after battery replacement.

After connecting the tag-on flex, you can reboot directly with the REFOX pre-programmed battery tag-on flex. You no longer need to connect the power cable or use the same type of battery to boot up.

Frequently Asked Questions:

Q: Do I need any special tools to replace the battery of my iPhone 12 Mini?

A: Yes, you will need several tools such as a Pentalobe screwdriver, a Phillips screwdriver, a spudger, tweezers, a suction cup, and a pry tool.

Q: Can I replace the battery of my iPhone 12 Mini myself?

A: Yes, but it is important to note that replacing the battery requires technical skill and experience. If you are not confident in your ability to replace the battery, it is recommended that you seek the help of a professional.

Q: Where can I buy the replacement parts for my iPhone 12 Mini?

A: You can purchase replacement parts for your iPhone 12 Mini from REWA Technology. REWA is a leading supplier of cell phone repair parts and tools. We also offer a wide selection of replacement parts for iPhones. 

Q: Is it easy to replace the battery of my iPhone 12 Mini?

A: It is difficult to say, but replacing the battery of your iPhone 12 Mini depends on your experience and patience. The process involves removing the screen, disconnecting several components, and removing adhesive strips that hold the battery in place.

Q: Is it safe to replace the battery of my iPhone 12 Mini myself?

A: If you have the proper tools and experience, and follow the proper safety precautions, replacing the battery of your iPhone 12 Mini can be safe. However, if you are not experienced or confident in your ability to replace the battery, it is recommended that you seek the help of a professional.

Q: Can I replace the battery of my iPhone 12 Mini if it is not waterproof?

A: Yes, you can replace the battery of your iPhone 12 Mini, but it is important to note that opening the device may void its waterproof condition.

Q: How long does it take to replace the battery of my iPhone 12 Mini?

A: The time it takes to replace the battery of your iPhone 12 Mini will vary based on your experience level and the rate at which you work. On average, it can take between 60-90 minutes to complete the replacement.

Q: Do I need to be authorized by Apple to replace the battery of my iPhone 12 Mini?

A: No, you do not need to be authorized by Apple to replace the battery of your iPhone 12 Mini. However, it is important to note that replacing the battery with unauthorized parts may cause damage to the device and void its warranty.

Q: Can I test the functionality of my iPhone 12 Mini battery after replacing it?

A: Yes, you can test the functionality of your iPhone 12 Mini battery after replacing it by following the proper instruction and testing procedures.

Q: Iphone 12 mini battery replacement video?

A video demonstrating the new method has been shared on YouTube by REWA Technology. The following video on YouTube provides a step-by-step guide on how to do this. 

Conclusion

Battery replacement is a common issue that many iPhone users face. The new method for battery data repair with iPhone 12 mini battery cell replacement is a convenient and efficient way to restore battery health and cycle time. With the pre-programmed REFOX tag-on flex cable, the battery replacement process becomes much simpler.

It is important to note that the battery replacement process requires precision and caution. If you are not familiar with the process, it is recommended that you seek professional help. Attempting to replace the battery yourself may result in damage to the device or injury.

At REWA Tech, we are committed to providing effective techniques and products for repairing mobile devices. We will continue to develop new methods and products to meet the needs of our customers.

Thank you for reading our blog post. If you have any comments or questions, please feel free to leave them below.

With the introduction of the iPhone X in 2017, Apple Inc. introduced the Face ID feature. This feature improved the security of the Apple iPhone by almost 20 times compared to Touch ID while also providing additional convenience for the user. Since then, Apple has released several models of iPhones and iPads that come with the Face ID feature. However, it can be troublesome when Face ID is not working, causing inconvenience.

There are some traditional methods for fixing Face ID issues that involve disassembling the phone, welding, and aligning the device, which is time-consuming and labor-intensive. To solve this problem, REWA Tech introduced the latest and innovative REFOX RP30 multi-functional programmer. The RP30 can not only solve iPhones with Face ID issues, but it can also restore battery health and the true tone function of iPhones. It is our belief that by mastering the use of this device and technique, one will be able to greatly increase the efficiency of iPhone repairs.

How to Fix iPhone Face ID

REWA Tech understands the complexity of the Face ID repair or solution for iPhones, which is why we have designed a very simple solution for you to use. The only thing you need to do is to follow a few simple steps in order to resolve the issue.

Step 1. Preliminary judgment

The first thing we need to confirm is whether the failure of Face ID was caused by the dot fusion projector or not. So we turn on the phone to check Face ID. The screen shows that there is a problem detected with the TrueDepth camera. Face ID has been disabled. Then we dial the number to see if the proximity sensor and flood illuminator work properly. While focusing, the camera shows move farther away when set to portrait mode. Therefore, we can make a preliminary judgment that the issue of Face ID failure is caused by the dot fusion projector.

Step 2. Testing

After judgment, place the phone screen face down on top of the heating pad to heat it. We choose to use a screen opener to take the screen off and remove the battery and Face ID.

Next, put the battery and screen back into the phone and connect the phone to the computer. Then link the Face ID to the RP30 Projector for testing. The results show that the dot projector was fused. So we can use the latest solution to repair it.

Step 3. Fixing

Back up the data on the dot projector and connect the programmer to the high-voltage power cable.

Click activate and wait for the activation process to be completed. After the activation process, snap the dot projector cable onto the programmer and then write in the data that has been previously backed up. Then remove the dot project cable and snap the Face ID.

Be sure to pay attention to the folding process. If you have doubts about this, you can check our video or contact us for further discussion.

Step 4. Check

Connect the Face ID to the programmer again for the test. The test result is normal. Put Face ID back on the phone and install the battery and screen. Turn the phone on to test. Face ID can be set normally and unlocked successfully.

Above is the latest Face ID repair solution shared. Since this is a very simple and easy-to-follow solution that requires no soldering, level 2 technicians can now easily correct complex Face ID problems.

To Summarize

Fixing Face ID issues on an iPhone used to be a complicated process that required disassembling the phone and performing complex operations. However, with the introduction of the RP30 multi-functional programmer, level 2 technicians can now easily fix complex Face ID problems without soldering or complicated operations. This not only saves time but also reduces labor costs, making it an excellent choice for cell phone repair shops looking to improve their efficiency and customer satisfaction.

The no-soldering solution for fixing Face ID represents a significant advancement in the field of phone repairs. The step-by-step process for using the RP30 programmer is easy to follow, and the results are impressive.

Looking for a Coupon to save on RP30 programmer? Visit our coupon page or apply the coupon code from Wethrift REWA Page.

Today we will share how to fix the Samsung S10 camera not working. Open the camera. The camera is not working. As the camera has been replaced before and the problem still occurs, we need to take out the motherboard for further testing.

Place the phone back down on the heating pad at 100 °C for 2 minutes.

Insert a plastic card and slide it through. Apply some alcohol to facilitate separation.

After the back cover is separated, disconnect the flex cables. Then yank the motherboard out. Remove the front camera. Disconnect the connectors and remove the back camera.

First of all, we check the appearance of the connector. The connector looks good with no obvious damage.

Next, we connect the red probe to the ground. Measure the diode values of the connector with the black probe. When measuring pin 58, the diode value is abnormal.

Open the bitmap. We find that the power IC supplies power to the camera. The failure of the camera is probably caused by the power IC. 

Next, we try to replace the power IC. Remove the shielding cover with a hot air gun at 380 °C and airflow 3.

Apply some paste flux to the power IC. Remove the power IC with hot air gun at 380 °C and airflow 3.

Then clean the bonding pads with solder wick. Clean the bonding pads with PCB cleaner.

Get a known-good power IC. Apply some paste flux. Flatten the tin on the bonding pads with soldering iron at 380°C. Clean the bonding pads with PCB cleaner.

Apply some middle-temperature solder paste to the bonding pads. Heat to form the solder balls with hot air gun at 320 °C. 

Next, we solder the new IC with hot air gun at 330 °C and airflow 3. 

After the motherboard cools, measure the diode value of pin 58. The diode value returns to a normal value of 520.

Then we put back the shielding cover and camera. Install the motherboard for testing. The camera functions well. That’s as far as today’s repair case goes.

REWA Academy now offers repair courses for Android phone motherboard, including popular models of Samsung, Xiaomi, and Huawei. Please feel free to visit our academy if you are interested in learning motherboard repairs.

For what reason does my iPhone continue to restart, and what do I do about it? We trust our iPhones and they need to work constantly. It would be great if there was a solitary reason behind why iPhones restart again and again, yet there is certifiably not a magic slug for this issue. In this article, I'll disclose what makes iPhones keep restarting and I'll tell you the best way to fix the issue.

For what reason Does My iPhone Keep Restarting?

iPhones that continue to restart for the most part fall into two categories:

1. iPhones that restart discontinuously: You can use your iPhone for some time with no issue by any means, and afterward your iPhone unexpectedly restarts.

2. iPhone restart circle: Your iPhone consistently restarts and it's unusable. The Apple logo shows up and vanishes on the screen, again and again.

Assuming your iPhone falls into the subsequent category, skirt ahead to step 5. It's difficult to do the initial few steps if you can't utilize the software on your iPhone.

1. Back Up Your iPhone

Before we do any troubleshooting whatsoever, ensure your iPhone is backed up. If your iPhone has a hardware issue, this could be your last opportunity to back up your information. If we want to, we'll restore your iPhone in a later step, and you need a backup before you restore.

Once you're backed up, you'll be prepared to begin fixing the issue.

2. Update Your iPhone's Software (iOS)

Like Windows on a PC or macOS on a Mac, iOS is your iPhone's working framework. iOS updates consistently contain heaps of fixes for programming bugs and different issues. Once in a while, a software update fixes the issue that is making your iPhone continue to restart or enter a restart loop.

To check if any software updates are available, go to Settings - > General - > Software Update. If an update is available, install it.

You can also connect your iPhone to your PC and use iTunes (PCs and Macs running macOS 10.14 or older) or Finder (Macs running macOS 10.15 or newer) to update your iPhone's software. If your iPhone is consistently restarting, iTunes or Finder may be your smartest option.

3. Decide whether An App Is Causing Your iPhone To Restart

It's extremely intriguing for an application to make an iPhone restart or turn on and off more than once. Generally, the software on your iPhone is protected from issue applications. That being said, there are over 1.5 million applications in the App Store and they're not all perfect.

If you installed an application not long before your iPhone entered a restart loop, uninstall that application and check whether the issue settles itself.

Settings - > Privacy - > Analytics & Improvements - > Analytics Data is somewhere else to check for issue applications. It's typical to see a few sections in this rundown. Quickly scroll through the list and search for any applications that are recorded again and again. If you see one, uninstalling that application might fix your iPhone.

4. Reset All Settings

Reset All Settings is certifiably not an enchanted shot, yet it can resolve specific software issues. Go to Settings - > General - > Transfer Or Reset iPhone - > Reset - > Reset All Settings to restore your iPhone's settings to factory defaults. You will not lose any of your applications or information, yet you will have to enter your Wi-Fi password once more.

5. Remove Your SIM Card

iPhone restart loops can be caused by issues with your iPhone's connection to your wireless carrier. Your SIM card connects your iPhone to your wireless carrier, so removing it is the most ideal way to troubleshoot issues where your iPhone continues to restart.

Sit back and relax: Nothing can turn out badly when you remove your SIM card. Your iPhone will immediately reconnect to your carrier when you set it back in.

If removing your SIM card fixes the issue, put the SIM card back in your iPhone. If the issue returns after you put your SIM card back in, you'll have to restore your iPhone (step 7) or replace the SIM card with your carrier.

On the off chance that removing the SIM card doesn't fix the issue, don't put your SIM card back in until you've finished the subsequent step.

6. Hard Reset

You shouldn't do a hard reset on your iPhone except if it's totally necessary. It's similar to switching off a workstation by unplugging it from the wall. That being said, an iPhone restart loop is one of those times when a hard reset is justified.

To play out a hard reset, hold the power button and Home button simultaneously until your iPhone screen goes blank and the Apple logo reappears.

On an iPhone 7 or 7 Plus, the buttons you need to press to execute a hard reset are somewhat unique. At the same time press and hold the power button and the volume down button.

Assuming you have an iPhone 8 or newer, the process of hard resetting is also different. Press and release the volume up button, then, at that point, the volume down button, press and hold the side button.

Notwithstanding what model iPhone you have, ensure you hold the two buttons down together for no less than 20 seconds.

If you removed the SIM card from your iPhone in the previous step, this moment's a decent opportunity set it back in your iPhone. We've eliminated the possibility that your SIM card is making your iPhone restart. Ideally, the hard reset will fix the issue where your iPhone continued to restart, yet on the off chance that it proceeds, you'll need to reset your gadget by adhering to the guidelines underneath.

7. Restore Your iPhone

Restoring your iPhone eradicates and reloads the iPhone's software (iOS), and it can dispose of a huge number of programming issues simultaneously. At the point when we restore your iPhone, we'll eliminate the possibility that a software issue might be making your iPhone restart - that is the reason Apple specialists get it done so regularly.

Your iPhone should be connected to a PC to restore. I suggest doing an exceptional sort of restore that Apple specialists do call a DFU Restore, which goes further than a normal restore and can tackle more issues.

After the restore gets done, you'll have the option to reload all your data from your iPhone backup in iTunes, Finder, or iCloud. If you still have an issue, return here and continue to peruse

.

8. Check For A Hardware Problem

Hardware issues are a typical reason why iPhones stall out in a restart loop. If you're utilizing a case on your iPhone, remove it before you proceed.

Intently check out the charging port on the lower part of your iPhone. Verify whether any trash is stuck inside and for indications of corrosion.

If something doesn't look right, snatch a toothbrush you've never utilized and delicately brush out the charging port. A short circuit or other issues inside the charging port can cause a wide range of issues with your iPhone.

9. You May Need To Repair Your iPhone

We've eliminated the possibility a software issue is making your iPhone continue to restart and we've checked for hardware issues outside of your iPhone. Assuming your iPhone is in a restart circle, your iPhone likely should be fixed.

If you decide to find support at your neighborhood Apple Store, ensure you have an appointment with the Genius Bar so you don't need to stick around.

Summary

By this point, I wish we'd fixed the issue that made your iPhone keep restarting. I would like to hear your experience and questions in the comments section below.

Read More: iPhone 14 Pro Teardown | Interchangeable Battery with iPhone 13 Pro

Battery repair is a common repair case every day. Today we're going to share with you the steps and details we need to pay attention to when replacing the battery cell.

Firstly, we use a clamp fixture to separate the phone

Remove the battery

Then we need to solder the BMS board of the original battery to the new battery

Remove the protective tape on the BMS board

Disconnect the cathode and anode of the battery with a pair of scissors

Please do not break the flex cable

Remove the original battery BMS board

Pry apart the anode tab and cathode tab

Place them on the welding clamp fixture

Put the battery cell with nickel-plated tabs onto the welding clamp fixture\

The cathode tab and anode tab are settled under the BMS board

Please align the anode and cathode respectively

Solder with the Spot Welder

Note that one end of the spot welding pen is placed on the conductor material (copper)

The other end is placed at the point to be soldered

Folder well the tabs after soldering

Apply the protection tape

Put on the protection bracket

Wrap another layer of protection tape on the outside

Connect the programmer to the laptop

Open the software

Click reading the battery data

Select the data that needs to be rewritten

Recalibrate the cycle times and battery efficiency

Click writing, and then the recovery

Disconnect the cable

Connect the power cable to turn on the phone

“Important battery message” is displayed

Turn off the phone and take out the battery

We install the new battery

It will be verified automatically by the system

There is no “Important battery message” now

Snapdragon 888 is one of the most popular processers in recent years. However, from phones under the rule of Snapdragon 888, there has been so much criticism on the overheating problem. The Xiaomi Mi 11 is one of the first devices powered by a Snapdragon 888 processor. Today we will share how to fix common problems of Snapdragon 888 with a Mi 11 repair case.

Press the power button and the phone won’t turn on. Plug in the power cable and the phone is still dead.

The next step is to take out the motherboard for further testing. Place the phone back down on the heating pad at 90 °C for 2 minutes. Insert a plastic card and slide it through. Apply some alcohol to facilitate separation.

As the back cover is separated, remove the camera and motherboard shielding covers.

Disconnect the flex cables and then remove the motherboard. Detach the back camera module.

Hook the motherboard to a direct current supply and prompt a boot-up with tweezers. The boot current jumps between around 100 mA and 200 mA.

According to the current jump and our experience, devices powered by Snapdragon 888 tend to have problems like no power, no wifi, no sound, etc. due to the pseudo soldering of the CPU. The general repair solution is to reball the CPU.

In order to remove the CPU, we need to cut a gap first. Remove adhesive with a hot air gun at 300 °C and airflow 80.

Then heat the RAM with a hot air gun at 380 °C and airflow at 120. While heating, try to pry up the RAM with a pry blade. You can remove the RAM once it becomes loose.

Keep heating to remove the CPU. Then we apply some middle-temperature solder paste to the bonding pads. Neutralize the temperature of the bonding pads with soldering iron at 380 °C.

Clean tin on the bonding pads with solder wick. Remove underfill adhesive with a hot air gun at 300 °C. Clean the bonding pads with PCB cleaner.

Use the same method to clean tin and adhesive on the CPU. During cleaning, some capacitors will be erased. Please note that these are filter capacitors and do not influence the use of the phone.

Clean tin and adhesive on the RAM with desoldering braid. Remove residual adhesive with a hot air gun at 300 °C.

Reball the CPU. Apply some middle-temperature solder paste. Heat with a hot air gun to form the solder balls. Then recall the RAM.

The next step is to solder the CPU. Apply some paste flux. Align the CPU. Solder the CPU with a hot air gun at 350 °C and airflow at 100. Touch the CPU gently with tweezers. If the CPU returns to position, the CPU is soldered well.

Then we solder the RAM. Clean with PCB cleaner. After the motherboard cools, connect the motherboard with the direct current supply and trigger the boot-up with tweezers. The current jump becomes normal.

Then we put back the camera module to the motherboard.  Apply thermal paste to the CPU. Install the motherboard. The phone turns on and other functions work well.

Today we will share how to fix a Blackshark 3 that won't turn on. Press the power button and the phone is unable to turn on. Plug in the power cable and the phone is still dead.

Next, we need to take apart the phone for further testing. Place the phone back down on the heating pad at 100 °C for 2 minutes. Insert a plastic card and slide it through. Apply some alcohol to facilitate separation. Please don’t break the flex cable while lifting the back cover.

Disconnect the flex cable. Remove the shielding cover, speaker, and camera. Disconnect the antennas.

As the motherboard is fixed by a screw under the screen, we need to remove the screen before taking out the motherboard. Place the screen down on the heating pad at 100 °C for 5 minutes. Start separating the screen.

As the screen is separated, disconnect the flex cables. Remove the screen and motherboard. Then we connect the motherboard with a direct current supply. Trigger the boot-up with tweezers. The boot current jumps between around 100 mA and 200 mA. It can be judged that the pseudo-soldering of the CPU has caused the problem.

Next, we need to reball the CPU. Remove the shielding cover. Scrape off the thermal paste.

In order to remove the CPU, we need to cut a gap first.

Attach the motherboard to the holder and protect the flash memory. Remove adhesive with a hot air gun at 300 °C and airflow 80.

Then heat the RAM with a hot air gun at 380 °C and airflow at 120. While heating, try to pry up the RAM with a pry blade. You can remove the RAM once it becomes loose.

Keep heating to remove the CPU.

Then we apply some middle-temperature solder paste to the bonding pads. Neutralize the temperature of the bonding pads with soldering iron at 380 °C. Clean tin on the bonding pads with solder wick. Remove adhesive with a hot air gun at 300 °C. Clean the bonding pads with PCB cleaner.

Use the same method to clean tin and adhesive on the CPU. During cleaning, some capacitors will be erased. Please note that these are filter capacitors and do not influence the use of the phone.

Clean tin and adhesive on the RAM with solder wick. Remove residual adhesive with a hot air gun at 300 °C.

Reball the CPU. Apply some middle-temperature solder paste. Heat with a hot air gun to form the solder balls. Then recall the RAM.

The next step is to solder the CPU. Apply some paste flux. Align the CPU. Solder the CPU with a hot air gun at 350 °C and airflow at 100. Touch the CPU gently with tweezers. If the CPU returns to position, the CPU is soldered well. Then we solder the RAM. After the motherboard cools, apply some thermal paste. Put back the shielding cover and install the motherboard.

The phone vibrates and there is light on the edge of the screen. We can judge that the phone is able to turn on but the screen is damaged.

Then we install a known-good screen. The phone turns on normally. That’s as far as today’s repair goes. We will keep working on more Android repairs. Please stay tuned.

Please visit our YouTube channel for the video guide and visit our shop for the instruments that we used to fix this problem.

Today we will share how to replace the front camera of iPhone 11 Pro while keeping the Face ID function.

Turn on the phone and open the camera. The rear camera works fine while the front camera malfunctions.

Then we disassemble the phone. Remove the shielding covers and disconnect the battery. Disconnect the front camera flex cable.

Get a new front camera flex cable. Install the new front camera flex cable. Connect the battery. Turn on the phone and open the camera. Both the rear and back camera work fine. It can be concluded that the failure of the front camera is caused by the damaged front camera.

As the front camera is fixed together with the infrared camera and dot projector, we need to replace the front camera separately if we want to keep the Face ID function.

Remove the front camera module.In order not to damage the infrared camera and dot projector, apply tapes to the infrared camera and dot projector.

The front camera flex cable and connector are good, which tells us that the failure of the front camera is not caused by flex cable and connector. The damaged front camera has caused the trouble.

Then we need to replace the front camera. Attach the front camera module to the holder. Heat with Hot Air Gun at 100 °C to remove the tape.

Grind the metal plate away with a Polishing & Grinding Pen. Pry up the metal plate with tweezers.

Heat the front camera with Hot Air Gun at 100 °C for 30s.

Cover the front camera with Dust-free wipe and press it gently.

Detach the damaged front camera. Apply some adhesive. Install the new front camera. Fix the front camera with the holder.

After an hour, remove the front camera module. The front camera has been successfully replaced. Then we install the front camera module to test. Turn on the phone. Both the front and rear cameras work fine. The Face ID functions well too.

We can see that the front camera replacement will not affect the function of the Face ID while the Face ID will be disabled for front camera module replacement. Visit REWA Academy to study more phone repair techniques. You can learn phone repair business here.

Watch the video below to see how we fix the iPhone 11 Pro front camera while keeping the Face ID function.

If you've broken your phone screen, here are some tips for display replacement. We will bring you a case iPhone X as a reference. All you need is a repair kit and a new screen. The repair kit should be included as below: tweezers, screwdrivers, pry piece, suction cup, heating pad, programmer, spudger, battery adhesive, and waterproof adhesive.

Before the screen assembly replacement, we need to check out the True Tone display function and whether it still works as usual or not to make sure the new screen will be working.

Firstly, please long press the phone to turn it off. Then you can use a pentagon screwdriver to unscrew the screws at the bottom of the phone. Please pay attention to putting the screws aside well. You can place the screen face down on the pad for about 2-3 minutes after the heating pad is up to the temperature of 70—80°c. And fix the suction cup at the bottom of the phone, lift the screen gently, and insert a pry piece underneath. Gradually move around the edge of the display, separating the screen along the gap. The display assembly is still connected to the iPhone by cables, so don’t try to remove it completely. Again, please pay attention to the position of the cable to avoid damage. The angle should not be greater than 90 degrees to prevent breaking the flex cable. The process of removing the cover is done.

Next, use a Tri-wing screwdriver to unscrew the screws on the shielding cover of the cable connector. You can use a spudger slightly to extricate the battery and the connector between the screen and motherboard. Now, continue to follow instructions step by step. Detach the earpiece speaker flex cable, and remove the old display assembly.

In order to retain the True Tone function on the display as everything in the iPhone is paired to another screen, it's suggested to make good use of a programmer. Fasten the old touch connector on the corresponding connector of the programmer, and start reading. After everything is done, take off the old screen assembly, connect the new one to the programmer, and start writing.

Please connect the new screen assembly to the programmer, start writing, then place the old screen assembly on the heating pad. You can use a Tri-wing screwdriver to unscrew the screws of the earpiece cable and take out the earpiece. Tear off the protector of the new screen assembly and reassemble the earpiece cable on the new screen assembly. Lastly, tighten the screws. Please pay attention to the position of the grounding chip. Finally, we come to the connection part. Please connect the display cable, touch cable, earpiece cable, and battery accordingly.

If there is something wrong with the repair process or assembly issue, it's better to do some tests after replacing a new screen.

It is the same step as the beginning. Long press to turn it on to do some screen test first. We need to do several tests: 3D touch testing, True Tone testing, and light adjustment testing. If your phone shows, all is usually working. Then you can tear off the waterproof adhesive and make it adhere to the phone body. Press lightly with tweezers to make it adhesive, tear off the film, reassemble the display cable, and touch the cable. And the earpiece assembly, and connect the battery. Install the shielding cover, and tighten the screws. Take off the waterproof film around the frame. Buckle the phone screen, and tighten the screws at the bottom.

Those are all iPhone X screen replacement steps we share with you. If there is any confusion, please leave us your comment.