I've got an intermittent problem - sometimes when I wake the phone up, the touch screen doesn't work. It happens when I wake it up with the power button, when someone calls, or when an alarm wakes up the screen. That means when the problem happens, I can't answer the call, or turn off the alarm (sometimes locking the screen and waking it up immediately works).
It doesn't seem to be affected by whether or not the phone is or has been charging, whether it's been in my pocket or the temperature of the device. I've not been able to discern a pattern at all. Once the phone is unlocked and the touchscreen is working though, it works perfectly. The problem never returns while I'm using it, only if I lock it, and only sometimes.
If I leave the screen on while touch is unresponsive, I can tell when it is responsive to touch again by a line that quickly flashes along the top edge of the screen. At that point, the screen operates entirely normally.
In what may be a related item, when I'm on a call, sometimes the proximity sensor doesn't work properly and the screen turns back on and starts working. I get off the call and find my phone in a different app.
Does the Nexus 5 use the proximity sensor while the screen is off as a way to weed out unintended touches while the phone is in a pocket?
I'm going to try and store it face up over the next couple of weeks and see if the problem continues, but I was hoping that someone might have some insight.
About the phone:
I cracked the screen over the summer and had it replaced, but I didn't have any issues with it at all until I installed Lollipop. 5.0.1 hasn't made a difference
