Fix Blank screen while receiving calls in Android Lollipop
The display staying blank while receiving calls is a frequent problem plaguing Android users who have recently updated their device to Lollipop 5.0 (Android L) or 6.0 Marshmallow. KitKat 4.4 and Jellybean 4.3 users might also face similar black screen on call issue, if they recently fiddled with the call notification settings of their devices. When your phone is idle, the screen sleeps but it should wake up when you get a call. Due to this bug, when theres an incoming call you can hear the ringtone playing but the display remains blank, so you cant see who is calling without pressing the power button to unlock the screen. Here is how you can fix this issue:

First, check for updates. If new firmware or new version of Android OS is available, install it. To check for updates Go to Settings >> About Phone >> System Updates >> You will be notified if theres an update available >> Proceed with the update. That should get rid of this bug. If you have already installed the latest OS on your device but are still having this issue, follow these steps:

First, check for updates. If new firmware or new version of Android OS is available, install it. To check for updates Go to Settings >> About Phone >> System Updates >> You will be notified if theres an update available >> Proceed with the update. That should get rid of this bug. If you have already installed the latest OS on your device but are still having this issue, follow these steps:
- Go to Settings >> Sounds and notification >> Interruptions
- You will see When calls and notifications arrive option >> Select Always interrupt (alternatively, select allow priority interruptions only).
- Now from Priority interruptions >> Turn on Calls
- Reboot your device
- |Do a test call to see if you smarphones display turns on when receiving a call.
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