After turn on iPhone, it seems no response, the iPhone display screen keeps black. When calling this iPhone 7 Plus,the iPhone has ringing and vibration, but the iPhone display screen still black. What’s trouble? The iPhone display screen won’t lit. Here to get troubleshooting guide to fix it.
1. Reboot iPhone
A lot of iPhone software issues can be fixed by rebooting. In order to reboot iPhone 7 plus, please press and hold down the On/Off button on the right side, while continuing to hold the On/Off button, press and hold the volume down button on the left side of your iPhone, hold both buttons as the screen turns off, and keep holding them until the screen turns back on and displays the Apple logo.
2. Update IOS
After rebooting, if the iPhone screen still keep black, then try to fix it by updating IOS. Apple always use IOS update to fix software errors. Use MFI lightning cable connect your iPhone to PC, and then use iTunes to update it.
3. Check the iPhone memory status
To ensure that each program installed on your device works correctly, you can connect the iphone to your computer and use itunes to check its memory status.In this step, use the latest iTunes version possible to avoid system conflicts. Or if you can turn the iPhone on after charging, you can go directly to the Settings-> General-> Usabe-> Manage Storage , and then look closely at the details of the iPhone’s internal storage space allocation. If you see some applications taking up too much memory in some applications, you have to do some repairs. And you can either clear the temporary files for the cache or remove the application, or uninstall Non-essential applications or complex files from the device.
4. Enable Recovery mode on iPhone
Put your iPhone into Recovery Mode, install the latest version of iTunes on your computer, and then you can update or restore iOS through iTunes. Once the iPhone is in recovery mode, you will be prompted to choose to restore or update. If you would like to continue with iOS recovery, click Restore. Otherwise, click to select Update to continue the iOS update via itunes. Please note the following things
When you choose to update, iTunes will try to reinstall iOS without deleting your content, and then continue downloading your iPhone software. Depending on the file size of the software you are downloading, the download process may take several minutes.
If the download time exceeds 15 minutes, your iPhone will exit the recovery mode, and if you enter the recovery mode screen, you need to rerun the steps from the forced reboot.
5. DFU restore iPhone
DFU mode is another iOS system state that lets your iPhone device communicate with iTunes without having to load its operating system or launch the iOS boot loader. You can use DFU mode to edit the iOS firmware, whether it’s for downgrade or use of custom firmware for the iPhone. If recovery mode has no effect, you can put your device in DFU or Device Firmware Update mode instead.
The iPhone DFU mode indicates that the iPhone screen remains black after the lower Volume button is released within the specified time period. At this point, you should see an iTunes hint that iTunes has detected your iPhone and then try to restore iOS. Once iTunes completes the recovery of iOS, try turning on the device power.
6. Send it to Apple or phone repair shop
If none of the software troubleshooting guide works, then it may the hardware error. In this case, if you are not the professional repair man, you need send it to Apple care or local iPhone repair shop, they will use phone repair tools and phone repair skills to fix this issue.