Have rooted it and added many other apps and deleted them when I didn't like them. I use the Apex Launcher. It has been perfect up until today. I wanted to move new app icons into the dock area underneath the normal home screens. I bought the Pro version of Apex Launcher because I thought the added functionality would allow me to do this. Whether or not this upgrade is the source of my present problems, I do not know.
The problem I now have is that once I unlock the screen, the normal home screen is now blank. If someone calls me the phone app lights up and I can pick-up and talk normally, later check my contacts, see the call and text logs. After the call, pushing the "Home" button briefly no longer works to bring back the home screen. Pushing the "Home" button for a couple of seconds brings up the running apps and lets me close it, then when returning to the "home" screen its blank.
Swiping down from the top allows me to seeing the settings buttons such as WiFi etc as it was before. I can click on the "Settings" icon to open the settings, but if I try to change the "theme" the app responds every time that it has stopped working.... Swiping back up returns the blank screen.
HELP please !!!