How To Fix OnePlus 3T Black Screen Problem

It’s been reported by some OnePlus 3T owners that a black screen shows up after you have turned on the smartphone. The problem is that OnePlus 3T buttons light up like normal, but the screen remains black and nothing is showing up. The OnePlus 3T screen won’t turn on at random times for different people, but the common problem is that the screen fails to wake up. There are several different ways to try to solve OnePlus 3T blank screen issue. Below are steps to fix OnePlus 3T black screen not turning on issue.
 
Boot to Recovery Mode and Wipe Cache Partition
The following steps will get  OnePlus 3T into Recovery Mode by booting the smartphone:

1. Press and hold the Volume Up, Home, and Power buttons at the same time
2. After the phone vibrates, let go of the Power button, while still holding the other two buttons until Android System Recovery screen appears.
3. Using the “Volume Down” button, highlight “wipe cache partition” and press the Power button to select it.
4. After the cache partition is cleared, your smartphone will reboot automatically

Read this guide for a more detailed explanation on how to clear cache on the OnePlus 3T
 
Factory Reset OnePlus 3T
If the method above didn’t help you fix the black screen problem on OnePlus 3T, then you should try to factory reset the smartphone. The following is a guide on how to factory reset the OnePlus 3T. It’s important to note that before you go to factory reset an OnePlus 3T, you should back up all files and information to prevent any data from being lost.
 
Get Technical Support
If none of the methods have worked in trying to get the OnePlus 3T to turn with the black screen, it’s suggested to take the smartphone back to the store or to a shop where it can be physically checked for any damage. If proven defective by a technician, a replacement unit may be provided for you of it could be repaired.