I have been using HTC One S since July and I had no problem after the latest update but since yesterday I've been noticing something weird. Everytime I try to unlock my phone and swipe the ring, the screen kinda zoom in and out for a zing and then sometimes a black line will appear on the bottom. After that the screen seems normal as nothing happened. I did not know whats wrong I did soft reset couple times and boot safe mode. I have not done any factory reset yet.. but I did not how to a back up.. pls help for both problem!!!
Thanks
