For iPhone 11 and higher ones, if you get your screen changed from a non-authorized repair service center,“Important Display Message” will appear.

As screen replacement is one of the most common repairs for iPhone, the price of Apple's official screen replacement is several times that of third-party repair parts, which makes consumers have to turn to third-party repair channels.

However, the non-genuine screen warning will inevitably appear after third-party screen repair. Third-party screen replacement generally offers OEM or aftermarket screen. For OEM screen, we can transfer the original IC to the new OEM screen, which can get rid of the non-genuine display alert. Unfortunately, this doesn’t apply to most aftermarket screens. After testing by our engineers, we select several aftermarket screen assemblies that support IC transfer to remove the warning message, ranging from iPhone 11 series to the latest iPhone 12.

Next, we will show you how to remove the warning message with the aftermarket iPhone 12 Pro screen. After third-party aftermarket screen replacement, a non-genuine display warning appears and True Tone disappears.

As the aftermarket screen only stores the touch and pop-up encryption data, we need to restore the True Tone firstly. Connect the original screen with the programmer to read the True Tone. Then connect the aftermarket screen with the programmer to write the True Tone.

After reading and writing, True Tone is restored on the aftermarket screen but there is still a warning message.

The next step is to transfer the IC. Pre-heat the flex cable with a hot air gun at 240 °C. Then apply some alcohol and carefully pry up the flex cable.

Insert a blade under the flex cable and apply high-temperature tape around the IC. With hot air gun at 240 °C and airflow 8 for about 6-8 seconds, we desolder the chip.

As the chip is removed, we apply some middle-temperature solder paste and paste flux. Flatten the bonding pads with soldering iron at 300 °C. Then remove adhesive with hot air gun at 300 °C. Clean the bonding pads with PCB cleaner.

Scrape away black adhesive on the edges. Once cleaned, apply some middle-temperature solder paste. Form the solder balls with hot air gun at 300 °C.

Next, we use the same method to remove the IC on the aftermarket screen. Please take protection measures thoroughly. As the soldering for aftermarket IC is different, we only need to use hot air gun at 100 °C for 5 seconds to desolder it.

Apply some paste flux to the bonding pads. Remove tin on the bonding pads with soldering iron at 320 °C. Clean the bonding pads with PCB cleaner.

It can be seen that the pins and solder joints are consistent with the original screen.

Then we install the original IC. Apply some paste flux. Solder the IC with hot air gun at 240 °C. After the screen cools, clean residue soldering paste with PCB cleaner.

Install the aftermarket screen. There is no non-genuine display warning and True Tone is restored. The display and touch also work fine.

As the technology becomes more and more mature, many third-party screens are not much worse than the original genuine screens. In terms of display effect, touch effect and price, the third-party screen replacements are much more cost-effective than Apple's original screen replacements. We not only provide aftermarket screens that support IC transfer to get rid of the warning message but also full set of tools and technical support. Other than that, we provide aftermarket screens without the IC to save you from the trouble of removing. If you are interested, please don’t hesitate to contact our account managers.

The basic tool for phone repair we can see commonly in the market is only for high-temperature soldering or heating the screen, such as the CPB heat mat.

But what about the repair tool with multifunction?

REFOX RS30 ESD Repair Heating Pad is a multifunctional repair tools for cell phone back cover separation and screen removal, also for simple repairs to high-temperature soldering. It's made of silicone material and owned with the utility patent. There are other functions, such as magnetic storage for the components.

In the following introductions about RS30 Repair Heating Pad, let's explore its features and advantages. 

-- Large working area

-- Get to temperature quickly with temp control

-- Built-in temperature control module to prevent overheating 

-- Non-toxic silicone soldering mat with heat resistance up to 100°C

-- Three stunning colors

    • Multifunctional design, repair parts storage, and heating as one

    • Photo-oxygen coating
    • -- Anti-fouling 
    • -- Anti-static
    • -- Anti-corrosion
    
    • Built-in aerogel insulation cotton, uniform heating and reduce the risk of breaking screens

Application

• Back cover separation (Android) 
• Screen removal (iPhone, Android, tablets) 
• For simple repairs to high-temperature soldering

The difference between RS30 Repair mobile phone heat pad and other repair mats is its Utility Patent which means it's practical and creative in the repair market. 
    

When the phone is damaged, we may see that the screen is damaged but can still display. At this time, we can restore the original appearance of the phone by replacing the high-quality glass/touch.  In terms of quality, the OEM touch screen digitizer on the market is actually made of an OEM touch panel and fine glass. REWA defines such structure products as S+ grade. A+ grade refers to a structure of general glass and copy touch panel. A+ grade usually applies to aftermarket screens while S+ touch screen digitizer usually is used on OEM screens.

Take the touch screen digitizer of iPhone X for example. S+ grade comes with smooth sealing of ICs and reflective copper around the touch panel, while A+ features rough sealing and non-reflective gray around the touch panel.

In this video, we will restore a heavily destroyed iPhone 13 Pro. This iPhone 13 Pro’s screen and back cover are severely damaged.

Next, we install a known-good display to test the phone. The phone can be turned on. Face ID is unable to activate. There is no modem firmware.

Both the front and back cameras are not working.

In the first place, we replace the front and back cameras. Apply protection tape on the TrueDepth camera assembly.

After replacement, the back camera works again but only with 2x zoom. The front camera returns to function well. The malfunctioning modem firmware and cameras are caused by the motherboard middle layers

The next step is to remove the motherboard. The motherboard looks complete and not damaged. Attach the motherboard to the holder. As always, remove foam and dissipation tape.

Heat the motherboard at 170 °C. Add heat with a hot air gun at 330 °C. Remove the logic board.

It can be seen that there are many missing pads. Then clean the bonding pads with soldering iron at 370 °C and solder wick.

Open the bitmap to view the missing pads. There is only one missing pad that needs to be repaired.

Then we scrape to show the circuits under the pads. Clean the bonding pads with PCB cleaner.

Apply some middle-temperature solder paste. Solder with a hot air gun. Apply some paste flux. Put the soldering lugs in position. Solder with hot air gun again. After soldering, clean the bonding pads with PCB cleaner.

Apply some solder mask. Solidify with a UV lamp for about 1 minute. Scrape away residue solder mask to show the pads.

Then we need to recombine the motherboard. Apply some low-temperature solder paste to the bonding pads.

Put the signal board on the 170 °C heating platform to heat. After the solder balls are formed, apply some paste flux. Align the logic board. Keep heating the motherboard.

Install the motherboard for testing once it cools. Face ID is still not working. The modem firmware is restored. The rear camera works fine.

Then we inspect the TrueDepth camera assembly. Grind the metal plate. Remove the dot projector module. The CMOS of the infrared camera is damaged, which is unrepairable at the moment.

Next, we replace a brand-new back cover. Move flex cables and parts on the original back cover to the new cover. Apply new waterproof adhesive. Connect the display and turn on the phone. Everything else on the phone also works fine. That's as far as today's restoration goes.

There are many tools commonly used by mobile phone repair shops to fix or change cracked/broken mobile screens. For Example, adjustable screen fixing clip fixture,  suction cup open hand tool, screen separator, etc. But most of them are only within a single function. So, we usually apply an opener on the screen first and then use another clamp fixture tool to press the screen. The old way we used to replace a new screen is using a rubber band to long-press it. However, it takes so much time and makes the customers wait unavoidably.
Today, we recommend you a brand new machine with both functions, opening and pressing. REFOX RS-50 is a Screen Opening and Press Clamp Fixture, which can efficiently remove and press mobile phones. It is available to dismantle various mobile phone screens, press different back covers, etc. We will tell you the features of a product as below:
 

High-quality aluminum alloy, durable to use
 

Adjustable design, compatible with all types of flat screen

Big size, strong suction, not easy to fall off
 

All-round EVA foam protecting from shock, safe and scratch-free

Four ball guide sets uniform force to make the frame glue fit better
 

Unique slot design, no damage to the frame

And its wide application on:
 
Remove the phone screen

Separate the back cover 
 

Adhesive Bonding
 

Rewa Tech is always dedicated to providing excellent customer service. If there any confusion or want to know more please contact us service@rewa.tech