Answer without unlocking in android 5.0 I recently upgraded my nexus 4 to android 5.0 (Via OTA update).  Now, for some reason, when I get a phone call the screen is black and I have to 


press the power button 
ress/swipe the lock icon on the screen
enter my password 
swipe right to answer my call.


Before (android 4.4) all I had to do was slide to answer.  How can I get the old functionality back?
Try resetting the screen lock on your phone. Worked for me. I have a nexus 4 too.