Samsung Galaxy S2 on Sprint sudden Drop in Battery Life Since I got this device in mid November to now, I have had great battery life usually lasting almost two full days and never having a problem for one day unless I'd been using it excessively. Suddenly yesterday I started losing power and the device is dead in just about 8 hours, with the graph of battery loss showing only Skype and Android OS. I haven't used Skype at all and don't know why it would even show up on this graph, but Android OS usually hadn't been showing up as more than about 5-15% of my total battery usage, much less overshadowing everything else. I uninstalled Skype thinking it may have updated and have noticed no difference at all. 

I've started looking for solutions online, and found forums for "android OS bug fixes" but nothing that detailed anything similar to this situation. http://forum.xda-developers.com/showthread.php?t=1135033 

I have had Gingerbread 2.3.3 since I got this phone (annoyingly.. where is ICS Samsung??) I'm pretty sure and have had no battery drain problems such as this at all until just recently. I had not made any changes to the system nor any applications or widgets and see no reason why suddenly the OS would start to consume my battery erroneously. 

I don't have WiFi on typically unless I'm in a zone where I do have it and sketchy service such as at work sometimes (I am a student and only work about 15 hours a week on top of classes) and at home if I'm updating apps or using my phone a lot and want the quicker service. GPS and Bluetooth are always off, along with 4G unless I will be currently using it a lot in a 4G zone. 

Basically, I see no reason why my battery life should suddenly become awful when I had been having such a wonderful experience with this phone for months. What could have caused this and how can I reverse it?? Thanks!
Are any apps showing suspiciously high cpu use? You can check with Seepu, or with 'top' command at the terminal or adb-shell.