Re: BUILD 10166 : BUGS Thread
After having the unresponsive screen problem several times, especially after calls, i think I figured what's the cause.
Two days ago, my L925 was so unresponsive that I had to do several soft resets. I though I had to go back to 8.1 since the phone would get stuck almost immediately. I then manage to get into the battery saver app and checked what apps were going through the battery and found that facebook was eating a lot of background app time. Since I don't care about all the notifications I was getting from facebook, I disabled the background for it.
Since then, my L925 is running smooth, battery life has doubled and no more unresponsive phone/apps. I even tried to run several apps, call from another phone, answer the call and check some email at the same time and all run smoothly.
It might not be the final answer to the problem, but for those having it, give it a try. Disable facebook background task and check if things get better.