Why is my phone waking up after 4seconds of delay?

[Windows Central Question]

phone waking up 4seconds delay if i select brightness to automatic

phone waking up 4seconds delay if i select brightness to automatic and proximity sensor not working.

 

[RumoredNow]

Re: phone waking up 4seconds delay if i select brightness to automatic

Try cleaning the screen over the proximity sensor...

Otherwise you may need a reset.

Are you on the Preview for Developers by any chance? Just received an update? More info might help us diagnose the issue better.