Got my Samsung Galaxy Ace a few days ago. Been working properly till yesterday when something strange started happening. Whenever I select the Clock application, the application starts, I see my clock for a brief moment (like a second) and then the phone locks. When I unlock it, it returns to Clock app and then immediately locks again! This keeps happening, not even giving me time to return to the home screen.
If I reboot the phone then it returns to the home screen and it works properly till I select the Clock application again. Then the same story happens and repeats.
So basically once I select the Clock application, the phone will lock. My phone OS is Android 2.3 Gingerbread. Can't figure why this happens. Any help would be appreciated.