Yesterday I noticed my phone was running hot, so I rebooted and the phone cooled down. I had to recharge last night because my phone was at 30% within 24 hours from full charge the day before. Normally my battery takes 2 days to reach that level. I use smart actions to turn off data, sync, and wifi for 8 hrs nightly. My battery was at 40% this morning after 8 hours off charger, when wifi, sync and data were disabled. So I charged the phone again.Three hours off charger it is at 80%, making 2 calls lasting a total of 15 minutes. My battery usage app shows Google plus using 20% of battery, but I haven't used Google plus. It also shows Facebook at 16%, but I don't use Facebook as I don't even have a Facebook account! These are the 2 highest usages shown on the battery usage app. Could it be the something went awry with the JB update which is just showing up now? I am considering a factory reset to see if that helps. I have been running JB since the first day the update was available, with no problems. Is there a way to back up the apps before reset, or should I just reload from the Playstore/ Amazon app store?