My S2 has been very strange in the last two days. I have a big 2000mAH battery. The phone is unrooted. After charging to 100%, both yesterday and today the phone was down to 18% charge in only two hours! This was with the screen off and no use of the phone at all!

So today I put in my previous 1650mAH battery. It started at 59% charge and I charged it to 100%. Then once again with screen off and no use of the phone, this battery also discharged down to 19% in two hours!! What the?

Is there likely to be something seriously wrong with my phone?- that it is discharging batteries so fast with nothing specifically happening to cause this discharge -of two batteries?

 

Thanks for your quick response. No nothing new has occurred with any aspect of my phone recently. I do not use Facebook or any other syncing apps except Gmail and I have had that on the phone since I first got it in December 2011. The Go Launcher problem was solved quite a while ago and is unrelated to this issue. I never have GPS on and syncing never varies for me so I am puzzled. It could not be the screen as that was not on at all. I am afraid that as you mention -it could be a defective charging circuit. I have already emailed my phone company about my problem. I am afraid they will fob me off by suggesting a factory reset. This is unlikely to help me.