Phone no longer lights up for incoming calls

Hello. One of our phones mysteriously quit lighting up the screen with incoming calls. One must press the start button on the side and then proceed to catch up. Thank you…

Moderator’s note: Title edited for clarity. Phone number removed because this is a public forum.

I found this solution:

Go to menu >>setting’s >>apps>>all

Tap on the top 3 doted line’s and tap on the "Reset app preference "

After that Power off the device for 2 minute’s and check it once .

Here:

incoming call blank screen - Lenovo Community

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