There are three OEM screen assembly suppliers for iPhone 7, iPhone 7 Plus, iPhone 8, and iPhone 8 Plus while there are only two OEM screen suppliers (LG and JDI) for iPhone XR and iPhone 11. The backlight numbers of the three suppliers are LG - DTP & C3F, Sharp - DHK & C01, Toshiba - C11 & F7C. 

LG is the universal version with high compatibility while Sharp and Toshiba feature poor compatibility.

If your original screen is LG and you want to replace it, your best choice would be LG because it has superior compatibility and is not easy to have a touch problem. If your original screen is Sharp and Toshiba, you can choose the corresponding screen type and LG will work too as it is the universal version.

If you want to replace your screen with one of these screens, your original screen must be OEM, Pull, or REFURB with the original backlight.

Display Comparison (iPhone7 and iPhone 8)

Display Comparison (iPhone 7Plus and iPhone 8 Plus)

Display Comparison (iPhone XR and iPhone 11)

Very much like some other artificial item, built-in lithium-ion batteries in an iPhone have a restricted life expectancy. In the end, they get worn out and quit displaying maximum performance, bringing about arbitrary rebooting and battery drain issues. In addition to that, worn-out batteries may likewise make the iPhone overheat.

When you get your battery replaced from a non-Authorized Apple service center, Apple begins showing a Genuine battery message alert on some iPhone models. In the event that you are getting an alarm on your iPhone about the genuine battery message and considering what it is, this guide is for you.

For what reason is Genuine/Important Message Alert Appearing on Your iPhone?

Apple has always been outstandingly worried about involving excellent parts in its gadgets. It’s a well-known fact that the Cupertino-based organization needs to have unlimited oversight of its gadgets, which practically rules out an autonomous fix. While this conduct can undoubtedly be alluded to as the work of art "Money Digging" strategy with which Apple is broadly related, we have consistently appreciated the tech goliath for going to additional lengths to keep clients from succumbing to non-genuine parts.

For this situation, in any case, Apple has chosen to show this message if the battery isn't changed by an approved Apple Service Center, and regardless of whether the battery is an authentic OEM battery of a similar quality as the one Apple uses. Forget OEM battery, assuming that you take 2 brand-new iPhone XR, for instance, and trade the batteries of the 2 devices on your own, you will begin receiving this message on BOTH the gadgets. The message isn't a sign on the nature of the battery or the sort. If essentially shows that the serial number of the replaced battery doesn't match the serial number put away in the settings of the gadget. At the point when an Authorized Service Center places in another battery, they utilize a unique programming to adjust the new serial number with the goal that your iPhone begins perceiving this substitution battery similar to possess. Since this product isn't accessible with any other individual but Apple, this message is something one needs to live with, at whatever point the battery is supplanted in specific models of iPhone.

On which iPhones does the Important Battery Alert Appear?

The genuine battery alert shows up on iPhone XS, iPhone XS Max, iPhone XR, iPhone 11, 11 Pro, 11 Pro Max, iPhone SE 2, iPhone 12, 12 Mini, 12 Pro, 12 Pro Max, 13, iPhone 13, 13 Mini, 13 Pro and 13 Pro Max. To be more exact, the battery health appears just on the 2018 iPhone models and higher ones.

The alert reads, "U Unable to verify this iPhone has a genuine Apple battery. Health information not available for this battery."

You may also see an extra message expressing that "Apple has updated the device information for this iPhone." It implies that the tech goliath has refreshed the gadget data for your iPhone for security investigation and service needs.

How Long does the Alert Exist on Your iPhone?

When Apple discovers the utilization of non-genuine battery parts on your iPhone, it appears the important battery message right on the lock screen as a clear warning. The message stays on the lock screen for the first 4 days and in the Settings for 15 days.

From that point forward, you can go to Settings > Battery > Battery Health to check the battery alert.

Does This Message Affect Your Ability to Use the iPhone?

No. Apple clearly expresses that the "Important Battery Message" doesn't influence your capacity to use your iPhone. As referenced over, the alert is simply to illuminate you that the replaced battery isn't perceived by the iPhone. It makes little difference to the performance of the battery. The sole disadvantage is that the battery health isn't visible in the Settings straightforwardly but can be checked by means of 3rd party Apps and software.

Apple's Face ID is commended for its speed and precision. It is the most helpful approach to open your iPhone after Apple decided to dispose of the Home Button for their iPhone X and latter models.

It's likewise secure to the point that Apple says the likelihood of an arbitrary individual could unlock your iPhone (or iPad) utilizing Face ID is around 1 out of 1,000,000, that is with a solitary enrolled appearance. iPhone and iPad Face ID solely permits up to five unsuccessful attempts before the password is needed.

Face ID is also used to validate buys and sign in to applications. Be that as it may, what occurs if your Face ID quits working?

Follow the below steps to fix your Face ID

1. Check Your Face ID Settings

Apple educates you to go to Settings > Face ID and Passcode.

See that your Face ID is set ready for action, with the vital features flipped on. In case there are a few features off, feel free to flip the settings you need to utilize Face ID for while you're there: Apple Pay, opening your iPhone, Password AutoFill, and the iTunes and App Store,

In case it's not set up, tap "Set Up Face ID." Your cell phone will walk you through the means which includes shifting and pivoting your head for the face examines. If you can't move your head, Apple's Accessibility Options button is additionally there for you to tap.

A password will be needed on the off chance that you've had five unsuccessful Face ID attempts and need to get to your phone.

2. Ensure Nothing is Covering Your Face

The TrueDepth camera needs to see your eyes, nose, and mouth completely noticeable for the Face ID to work. That implies you can't utilize it while wearing a face veil.

Face ID can work with numerous shades, however. In any case, Apple cautions that a few sunglasses that are intended to hinder particular kinds of light can impede the infrared light utilized by the TrueDepth camera and thus FaceID can't remember you. If that is the case, take your shades off when expecting to utilize Face ID.

3. Reset Face ID

If none of the past ways work, reset Face ID. Just head to Settings > Face ID and Passcode and tap "Reset Face ID". It's underneath "Set Up and Alternate Appearance."

Whenever that is done, go ahead and set up Face ID once more.

4. Restart Your iPhone (or iPad)

This might sound senseless but now and then software can glitch and a straightforward restart can assist with getting things back altogether.

Go ahead to restart your cell phone by either going to Settings > General > Shut Down or squeezing your Side Button and either one of the Volume Buttons together.

5. Set up an Alternate Appearance

In the event that you have an appearance that can appear to be endlessly unique from the first enrolled appearance, you can set up a substitute appearance so Face ID can in any case remember you and let you access your iPhone. Note that this doesn't work in case you're wearing a face veil, Apple says.

To add an alternate appearance, go to Settings > Face ID and Passcode. You may be needed to enter your password. Tap "Set Up an Alternate Appearance" and begin.

It's fundamentally the same way you set up your first enrolled appearance. Once more, if you are unable to move your head, the Accessibility Option button can help you with that.

6. Make Sure that the TrueDepth Camera is Free of Barrier

Apple advised ensuring nothing is covering the TrueDepth camera, which includes your phone case or the protector. Make sure no dirt or buildup is covering the TrueDepth camera.

7. Ensure You're Facing the Camera The Right Way

For iPhone users, hold your iPhone in a portrait direction when utilizing Face ID. Those who use iPad can utilize it in any direction.

Additionally, ensure you are confronting the camera straightforwardly. Apple says the TrueDepth camera has a comparable scope of view as when you take a selfie or make a video call. So ensure that your phone is at a safe distance or 10-20 inches away from your face.

8. Contact Apple Support

In the event that all these steps have been conducted, Face ID is as yet not working and you accept that this is a result of a new iOS update. Feel free to contact Apple Support and report the issue. In case there are different reasons you suspect like you can't enroll your appearance or different issues, Apple Support ought to have the option to help you with that.

Face ID is a facial recognition system that substitutes Apple's Touch ID fingerprint scanner on certain devices. It utilizes sensors displayed around the iPhone's user confronting camera to check your face and, if the output coordinates with the record information, perform activities like unlocking the phone or approving an Apple Pay exchange.

How Does Face ID Work?

The notch at the highest point of the iPhone screen on viable devices is the place where the sensors utilized by Face ID are found. These sensors include:

Dot Projector: This projects more than 30,000 imperceptible dots onto your face. The spots are utilized to plan the construction and profundity of your face. That forms a three-dimensional "special facial guide," as indicated by Apple.

Infrared Camera: This camera peruses the spots from the Projector and catches a picture.

Flood Illuminator: This extra infrared light guarantees that the framework works even in obscurity.

The facial guide caught by the infrared camera is coordinated against the information put away on your iPhone to open or approve the Apple Pay exchange. It's likewise used to make animated emojis planned to your face.

The framework is savvy and sufficiently touchy, as per Apple, that it can remember you regardless of whether you change your hairstyle, wear glasses, develop or shave facial hair, and age. All things considered, there have been a few cases in which Face ID has misidentified individuals, including twins and youngsters who look a ton like their folks.

What Is Face ID Used for on iPhone?

Face ID is utilized for a large number of exactly the same things as Touch ID. Generally significant among these are:

• Approving Apple Pay transaction.

• Unlocking the iPhone instead of entering a password.

• Providing your Apple ID passwords.

What Devices Support Face ID?

Face ID is upheld by the iPhone X and later models.

It's almost guaranteed that, actually like Touch ID started on the iPhone and has been added to different devices like the iPad, Face ID will ultimately show up on other Apple devices like the iPad.

Is My Face Scan Stored in the Cloud?

No, Face ID faces are not stored in the cloud. All face checks are kept straightforwardly on your iPhone. They are held in the "Safe Enclave," one of the iPhone's chips that is committed explicitly to getting delicate information. This is also where fingerprint data made by Touch ID is placed.

How Secure Is My Face Scan?

The way that the Secure Enclave works makes Face ID exceptionally secure. Your facial output itself isn't really stored on your iPhone. All things being equal, when the facial output is made, it's changed over to a number that addresses the scan. That is kept on your iPhone.

Regardless of whether a programmer had the option to get to the information in your iPhone's Secure Enclave (which is impossible), all they would get is a number, not a real scan of your face. That implies they would not have the option to utilize the information to present your data to another facial recognition system.

How to Set up and Use Face ID

Setting up Face ID is very basic—truth be told, you most likely did it while setting up your new iPhone. Simply position your face in the onscreen casing and roll your head around until the circle around the edge is filled in. Repeat however many times as the phone advises you and you're finished.

In the event that you skirted that progression during setup, you can generally return and add Face ID later. To do this, go to Settings > Face ID and Passcode and adhere to the onscreen directions.

You can also add different appearances to Face ID on your iPhone including somebody you trust just as option pictures of you (with and without a facial hair growth or glasses, for instance).

How to Disable Face ID

On the off chance that you need to rapidly disable Face ID, press the iPhone's side button and volume down buttons simultaneously. To empower Face ID once more, you'll need to reenter your password.

How Does Face ID Compare to Other Smartphone Facial Recognition Systems?

In spite of a solid portion of doubt when it was reported, Face ID has been a hit with users and critics. The general agreement is that it's exceptionally exact, extremely quick, and very simple. By and large, the progress away from Touch ID to Face ID has been quicker and smoother than the vast majority anticipated.

It's also demonstrated, indeed, how great Apple is at this kind of development. At the point when Face ID launched there was one major phone out with this sort of innovation: Samsung S8. Tragically, that system has been demonstrated to be extremely simple to trick, including by holding up a photo. Along these lines, the Samsung framework appears to not be secure. Samsung will not permit its facial outputs to endorse monetary exchanges (the manner in which Touch ID can on an iPhone).

Use Face ID When Wearing a Face Mask

The iOS 14.5 update permits users to open their iPhone X and later utilizing Face ID while they're wearing a face veil. To utilize this feature, you'll need an unlocked Apple Watch Series 3 or later and your iPhone nearby. Simply look at your iPhone, and afterward your Watch will give haptic input telling you the iPhone is unlocked.

FAQ

How does Apple Face ID work with a scarf?

Face ID is intended to work with head covers and eyewear. It ought to be able to perceive your face regardless of whether you are wearing a cap, scarf, glasses, contact lens, and even many sorts of shades.

Does Apple Face ID work when eyes are shut?

No, it doesn't. Face ID is attention mindful and can perceive if your eyes are open and your attention is coordinated towards the device. This assists with keeping somebody from unlocking your device without your knowledge.

As a facial-recognition technology initially launched on iPhone X, Face ID has been applied to latest iPhones, including iPhone XS，XS Max and XR. With this amazing Face ID system, users can unlock their devices by scanning and confirming facial identity. Whether you are wearing a hat, putting on glasses or you are in the dark.

There are 8 components packed into the front of the phone.

Infrared Camera

Flood Illuminator

Proximity Sensor

Ambient Light Sensor

Speaker

Microphone

Front Camera

Dot ProjectorThe infrared camera, the dot projector and the front camera are located on the back glass assembly. The flood illuminator, the proximity sensor, the ambient light sensor, the speaker and the microphone are located on the display assembly. Please be careful when disassembling or repairing the phone. Damage of any component will cause Face ID failure.

Next, we will disassemble the flood illuminator module and the dot projector and find out the reason why Face ID can be so easily damaged.

Let’s disassemble the flood illuminator module first. Pry open the glass cover with a blade. We can see that there are many holes on the flood illuminator that are arranged in a matrix of 11x11. The chip is connected to the circuit board with the help of gold wires. Once water damaged, these holes can be blocked. And you will be faced up with Face ID failure.

Let’s continue!

Chip 1 is an unencrypted chip. Since some repair technicians have replaced it before, our guess is that chip 1 might be a boost chip or an EEPROM chip. So chip 2, chip 3, or chip 4 might be the encrypted chip. Still, due to the difficulty of replacing, no one has verified that. As you can see, with thousands of components integrated, the composition of the flood illuminator module is very precise.

Chip 2 is the flood illuminator.

Chip 3 and Chip 4 are proximity sensors that are responsible for receiving and transmitting respectively. The infrared light emitted from the two proximity sensors could be a single dot or a single set of dots. Independent of each other, the three chips are indispensable. And this is what you should know about the flood illuminator module. Let’s move on to the dot projector.

The camera parts of iPhone X work in the same way as front cameras of other iPhone series. Now we will focus on the dot projector. The outer layer of the dot projector is sealed with resin and protected by metal welding techniques. Pay attention to these welding points.

They can easily fall off once the phone is dropped. And once off, they cannot be restored. When disassembling, we need to cut open the outer metal cover at first. Then heat with the Hot Air Gun and remove the resin with tweezers. Once the dot projector has been detached, we can see a crystal that looks just like a diamond lens. The infrared light is emitted from here. Then reflected by the crystal. Its projection range is determined by the lens afterwards.

Pry open the crystal, here we can see the complete internal structure of the dot projector.

The chip on the left is used to store data, whereas the chip on the right side acts just like a projector. We can see that there are thousands of dots arranged here. The infrared light is emitted from here. Since necessary power supply is needed for chip on the right side to work normally, once water damaged, circuits here are most likely to get short. Which can also result in Face ID not working. And please be noted that the chip is exposed without black adhesive seal. So it can be easily damaged once water-damaged or dropped. What’s more, it also can not be restored once damaged. And this is the internal structure of the dot projector. Let’s continue with the crystal part of the dot projector.

We can see that there is a concave lens and a convex lens on the crystal. And the two are made of glass. Once dropped, Face ID can also be affected.

Judging by what we have learned during the disassembling, main circuits of the Face ID are exposed. Once water damaged or exposed to a relatively humid environment, there might be electricity leakage or short-circuit problem that can result in Face ID failure. What’s more, most of the Face ID parts are made of glass. Once dropped, Face ID is most likely to be unavailable.

In summary, Face ID can be easily damaged and hard to be restored. Therefore, please be very careful in daily use. Make sure the phone is protected from water-damage or heavy falling. Repair technicians must exercise caution when repairing the logic board or replacing the display assembly. Also, for those in need, we have summarized repair experience of REWA repair technicians and hereby present you the following troubleshooting guide on common Face ID failure.

Here is the detailed video for your reference.

When repairing iPhone logic boards, we identify the issue first, find out why it occurred next, and figure out how to fix it in the end. This is a general process adopted by professional repair technicians around the world.

Wanna be a professional repair technician and handle iPhone tough repair? You need systematic training courses on REWA Academy.

Just click the cell phone repair course link below to know more!

iPhone X Series Logic Board Repair Course 

iPhone Logic Board Repair Foundation Course

iPhone Logic Board Repair Handwork Course

iPhone Logic Board Repair Work Flow & Troubleshooting Course

iPhone Logic Board Repair Cases Course

Cell Phone Broken Screen Refurbishment Course

iPhone Motherboard Repair Course Complete Package

What you have to say about Face ID? Please leave your comment below.Related Cell Phone Repair Guides:

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Ahead of the launch of the iPhone 12, rumors claimed that the new model will both feature Touch ID and Face ID. Now that these myths have been dispelled, the iPhone 12 retained the Face ID function that proves to be a more secure and effective recognition technology.

Though Face ID is handy, numerous users found that Face ID is not working sometimes, in which they have no choice but to enter the passcode to unlock.

There are generally several reasons why Face ID is not available.

Security Protection

Like passcode unlock, Face ID also has a security protection system. Once the system is activated, you must enter the passcode to complete the extra security verification.

1. The device just turns on or restarts.

2. The device is locked for more than 48 hours.

3. In the past six and half days, the device hasn’t been unlocked by a passcode and the device hasn’t been unlocked by Face ID in the past 4 hours.

4. The iPhone receives remote lock instruction.

5. Face ID unlocking has failed 5 times.

6. Simultaneously press and hold the side button and either volume button until the “Slide to power off” and “Emergency SOS” sliders appear on the display.

Other Conditions

The Face ID may also fail in some conditions:

1. Face Covered

If you wear sunglasses or a hat, it will prevent your Face ID from working successfully.

2. Camera Covered

If you apply a protective film on your phone, or there is dirt near the TrueDepth camera, the sensitivity of Face ID may be affected to some extent.

3. Hardware Problem

If you see "A problem was detected with the TrueDepth camera. Face ID has been disabled", it means that iOS has detected hardware damage of the device and it needs to be repaired.

Although Face ID is convenient, the repair cost of hardware damage is also very high. If there is a problem with Face ID, you can first try to solve it by resetting and restoring the system. If it is determined to be a hardware problem, you’ll probably have to take your iPhone to your nearest Apple Store for repair.

Feel free to leave any other questions you have about Face ID down below in the comment section.