Slight chance of working but easy enough to try.
1. Go to settings then apps and find the clock, clear data and cache for app.
2. Reboot phone.
3. If that fails try one of the many alarm clocks from Play Store. If those don't work then consider the more drastic steps listed in above post.
Android is a Linux-based operating system, but this fact doesn’t put … more
21 Sep 2014
By Tomek Kondrat
XDA Developers was founded by developers, for developers. It is now a valuable resource for people who want to make the most of their mobile devices, from customizing the look and feel to adding new functionality. Are you a developer?