It is a common problem that your iPhone screen is black, then you can't access the iPhone in any way. Actually, there are many reasons why your iPhone's screen could go black, and one possible reason could be hardware damage that can be due to drop the device or water damage etc.
Therefore, to solve this problem, here I would like to offer you three essential ways to fix iPhone 6 black screen.
Just refer to the detailed steps to learn.
Locate the Home button and the Sleep/ Wake buttons on your iPhone.
Step 2. Press and hold the Home button and Sleep/ Wake button at the same time until Apple logo appears.
Step 3. After that, release the buttons and your iPhone will restart.
Step 2. Connect your iPhone to the computer with a USB cable.
Step 3. iTunes then detects your iPhone. Go to Summary tab and click on "Restore iPhone".
Step 4. Click “Restore” to confirm the action.
Step 5. After that, iTunes will begin erasing your iPhone. It will then install the latest iOS software.
Step 6. Once it is fixed your iPhone will restart. Proceed and set it up as a new device.
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iOS System Recovery is one of the best recovery tools which can be used to fix just about any issue with the iOS firmware including a device stuck on the Apple logo, in a boot loop or a device displaying the blue, red or black screen among many other issues.
Supports iPhone 7, 7 Plus, 6s, iPhone 6s Plus, iPhone SE and the latest iOS 10.3 fully!
Work for all models of iPhone, iPad and iPod touch.
Complicated with Windows and Mac version.
Video for iPhone black screen of death fix:
How to use iOS System Recovery to fix the Black screen issue on your iPhone:
Step 1. Choose "System Recovery" Modea. Launch the program on your computer, select "iOS System recovery" from the "More Tools" section.
b. Connect iPhone to the computer, then click "Start" to continue after iOS System Recovery has detected your device.
Step 2. Download the firmware to your iPhoneAccording to your iPhone, download the firmware to your iPhone.
Step 3. Fix the problem "my iPhone screen is blackWhen the download is complete, iOS System Recovery will immediately begin fixing your iPhone black screen. The whole process will take no more than 10 minutes to get rid of black screen.
However, in addition to fixing the issue, “my iPhone screen is black”, this software also allows you to fix other iPhone issue like iPhone stuck on apple logo, iPhone error 21, iPhone error 3014 etc.