[Q](cm11) phone app freezes, screen becomes unresponsive
Im at a loss here, I dont know how to move forward with this problem so im asking for help lol XD.
I just gave my nexus 4 to my gf ( just got my opo last week). The phone was running cyanogen mod 11 ( some nightly version between m6 and m7).
So when my phone came in the mail, I dropped her sim in my nexus 4 (witch was working perfectly) and after making a phone call with it, she tells me she thinks the phone app is broken or something...
So I have a look at it and this is what its doing now. When I call someone, as soon as you click call the screen goes black. To bring back the screen you need to click twice on the sleep/wake button on the side ( kinda like if you were closing the phone and re-opening it) just for the screen to show again but none of the buttons work. Well none of the phone app buttons work, I can still click back/home/previous app buttons or slide down the top menu just fine. just cant click any of the number keys, hang up, hit speaker phone or anything related to the phone app. So in order to hang up I have to click home and then use the drop down menu and click hang up under the phone notification.
Before droping her sim card in the phone I did a standard wipe/factory reset on the phone just to give her a clean platform. So since that was already done I've tried updating to a stable ( M9 in this case) release, problem is still there, so I tried to wipe dalvik, cache and done a data wipe/factory reset from the CWM recovery and flashed a fresh cm 11 M9 with gapps and I still have the problem.
Im at a loss at where to begin looking for a fix for this situation, I've looked on the xda and cm forums and ran plenty of google searches for this problem but im coming up empty ...
any help would be greatly appreciated,
Edit: omg screen protector was interfering with the proximity sensor... Is this a common problem with nexus 4 or could this provblem still be related to my hardware/software ?
(I've never used a screen protector before).