My phone battery drains very quickly and I have barely used the phone. I still use my old phone, so I haven't used the phone a lot, only a couple of times to download apps and send texts. I got it a couple of weeks(2-3 weeks now) ago and it seems like the battery drains when it's been on for less than 24 hours. Like if I charge this evening, the battery is dead by the evening of the next day. I tried to change the power settings to the lowest, turn off wifi when i'm not using it and so on. Is this normal for samsung galaxy s2 phones or is my phone different?