Tablet will not respond to home button

[AC Question]

Help! My Galaxy Tab 4 will not respond to me pressing the home, task manager, or back buttons. I don't know why it's doing this! It suddenly started happening when I uninstalled Covet Fashion because it randomly locked the screen on me, but buttons did work.

 

[belodion]

Try first a Reboot. If no go, a Cache Partition wipe.
Tell us what happens.