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black screen on lumia 640xl after latest guild updated

xandros9

Active member
Nov 12, 2012
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If hard resets didn't help, I think we may need to use the WDRT, although make sure the phone has power.
 

riliev

New member
Feb 27, 2015
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0
0
Go to All Settings–>System–>Battery Saver.
Tap on Battery use
Choose Windows Default Lock Screen App to Always Run Background
Hope this helps
 

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