I noticed my phone's lock screen picture flickers sometimes..if i lock the phone n unlock again, then it will be normal..no problem..before this I was using gdr3 developer preview..i thought that was the cause..but then, I juz updated my phone to Lumia black..n I'm still having the issue..what should I do??
Sent from my Nokia Lumia 920 using Tapatalk
Sent from my Nokia Lumia 920 using Tapatalk