I have never had this problem before, and I'm not sure if it's something I installed through Cydia...or maybe it's a hardware problem that I need to go to Apple about.

My battery went from 100% to 50% in just a few hours...and that's with VERY light usage...a few phone calls and checking emails for less than 10 - 15 minutes.

Check out this video I captured of my phone doing the flickering, which I'm assuming is related to the poor battery life.

YouTube - ‪Video 1‬‏

Has anyone else had this happen? I also have experienced the flickering in my contact list (but only when Cyntact was installed). When I removed cyntact, the flickering stopped and I though I solved my problems...but they still were there along with the awful battery life.