I have the Samsung Galaxy 2. I have never had problems with it. Now it wont hold a charge longer than 4 hours, and that is just being on. Nothing running in the backround, not texting or calling or anything. Any suggestions?
You might need a new battery, how long have you had the phone ? Did you recently update the phone or add any apps just before this happened?
Make sure your display brightness isn't turned up to full and that your location tracking is off unless needed like GPS , WiFi network tracking , ect.