Please please please if anybody finds a cure for this oh so annoying occurrence please let me know. I got this phone a couple weeks ago and thought it was a fluke but it seems as though anytime I am in an app, looking at my contact list, on the internet... my phone will drop out of that and default back to the lock screen. I have been looking everywhere to try to find out how to stop this and I can not, for the life of me, find out how. I don't know if it is a Wi-Fi issue, connectivity issue, or what but If somebody can please help me I would greatly appreciate it.