2 Solutions to Fix iPhone Backlight Not Working Problem

Updated by Brian Davis on Feb 28, 2022 10:00 AM
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"Suddenly, my old iPhone 6s backlight not working after screen replacement. And I cannot use it as well as normal now. Can anyone help me with this? All the suggestions would be greatly appreciated."

iphone backlight not working

Quite a few users have reported to us the problem of iPhone backlight not working after accidentally dropping the device. Some even reflected a similar situation on the normal working iPhone, although it sounds rather absurd, this does not mean that such a situation does not exist. It is really annoying that the backlight goes black or shows the fuzzy display when we are using it. In this post, we will talk about how to fix this problem at ease based on different situations - hardware issue and software issue respectively.

Part 1: Cause of iPhone Backlight Not Working
Part 2: Fix Backlight Not Working with System Issue
Part 3: Fix Backlight Not Working with Hardware Issue
Part 4: The Bottom Line

1. Cause of iPhone Backlight Not Working

Troubleshooting at first can help you determine the direct cause of the issue. If you find the problem shortly after your iPhone was hit or dropped, then it may purely be a hardware problem that can be fixed. That is to say, you need to manually fix the backlight to solve the issue caused by some form of breakage. However, your iPhone backlight is also likely to stop working without any hardware damage. Although this is relatively rare, it does happen. And usually you need to deal with the software problem at this time.

Hardware Issue

Because working at a higher voltage, the backlight of iPhone is much more fragile than you can imagine. Not only dropped or hit but a screen replacement or backlight diode burned up would cause this iPhone backlight not working issue due to the incompatibility. Besides, the aging problem will also lead your iPhone to this situation. If your iPhone backlight is not displaying, try to connect it to a computer to see if the computer can recognize it. If the backlight has been damaged, try the solution in this post or hire the Apple Support service.

Software Issue

If there is nothing wrong with the hardware of your iPhone, that would be a fortunate situation. Your iPhone may run into bugs that make the backlight not work or display fuzzy. Sometimes, wrong settings of iPhone, outdated iOS versions or apps that have bad compatibility with iPhone can be in consideration in this case.

Wondering how to fix the problem without too much effort? Just read on this post to learn how to do.

2. Fix iPhone Backlight Not Working with System Issue

The very first time you found out that your iPhone backlight not working, you might think that this is due to problem caused by the system software. By taking advantage of a professional iOS system repair tool called TunesKit iOS System Recovery, you can easily repair almost all common issues on your iOS devices easily, whether it is stuck in recovery mode or DFU mode problem, update issues, black screen of death or others. Besides, there's no need to worry about the data loss problem while doing the fixes to your iPhone, iPad or iPod touch as the software will repair those iOS issues without changing or leaking any of your personal info on the device.

In order to fix the backlight problem of your device, you need to download the program for Windows or Mac according to the system running on your computer. Then simply follow the step-by-step guide below to get your iOS system back to normal state easily.

Video Guide: How to Fix iPhone Backlight Not Working

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Step 1Connect iPhone to the computer

Open TunesKit iOS System Recovery and find a USB cable to connect your iPhone to the computer. Click on the Start option, and then set the repair mode as Standard Mode and click the Next button. After that follow the prompts from the window to put your iPhone into DFU mode or recovery mode and click the Next button once finished.

connect iphone

Note: You can also quickly put your iPhone into the Recovery Mode with one click on the main interface of the program.

Step 2Download the firmware package

Tap on the Download option if the device info is totally right. Correct it otherwise. Then the program will start downloading and verifying the latest iOS firmware package matched to your device.

download firmware

Step 3Fix iPhone backlight not working

When it finishes the downloading, just press the Repair button to start the iOS fixing. It takes a while to complete. You need to make sure that your iPhone is connected to the computer during the process to avoid any problems that may occur unexpectedly.

fix ios

3. Fix iPhone Backlight Not Working with Hardware Issue

As a matter of fact, sometimes the iPhone backlight not working after replacement or dropped can be related to hardware issue, but fixing the iPhone backlight is extremely sophisticated. Hence, it is advisable to head for the Apple Store to resolve the issue rather than replace it by yourself. But if you are confident to get the problem fixed with your own strength, then you can refer to the steps given below.

Fix iPhone Backlight Not Working with Hardware Issue

Step 1Remove the back panel

First of all, back up your iPhone and then turn it off before disassembling. Push the back panel of the device and carefully remove it.

Step 2Remove the battery

At this point, remove the screw fixing the battery connector to the logic board. After that, pry the battery connector from its socket with a plastic opening tool. Then, lift the battery gently.

Step 3Pry the antenna connector

After that eject the SIM card from the bracket, and then pry the lower antenna connector off the logic board.

Step 4Remove the Wi-Fi antenna

Thereafter, what you have to do is to remove the screws that connect the Wi-Fi antenna to the logic board and then uplift it.

Step 5Lift components of iPhone

Now lift the front camera cable, headphone jack, digitizer cable, top microphone, rear camera connector and LCD cable.

Step 6Remove the logic borad

After removing all the components, you can remove the logic board from the device now. Remove the screws that secure the vibrator with the inner frame and the speaker.

Step 7Remove the buttons and crews

Now it's time to remove the button and the SIM card side screws. After removing all the screws, you are able to lift the top edge of the front panel assembly.

Step 8Remove the display

Now you need to remove the display from the screen. The component and the part that cause damage to the backlight problem will be shown clearly.

Step 9Replace components

Finally carefully replace broken part and reassemble your device.

Tip: Because of the precision of electronic parts in iPhone, repairing the backlight by yourself may backfire. It would be a better choice to ask help from experts in fixing the iPhone backlight, though it may cost you $25 or more. You just need to send your iPhone to those who can fix it and get it back within several days. Also, you can contact Apple Support to get this issue done. Apple Support is much more expensive but serves you better.

The Bottom Line

Next time, if your iPhone is unfortunately to be in a state of iPhone backlight not working, try to repair it with a professional and efficient iOS system repair tool first. With TunesKit iOS System Recovery, you can easily fix the issue of backlight on iPhone not working as well since the program fully supports almost all models of iPhone, iPad and iPod touch even those running the latest iOS 15. So just download the software and give it a try now.

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has covered tech and entertainment for over 10 years. He loves technology in all its forms.

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