I have had this quirky issue with my phone. On two occassions after I charged it and took it off charger and left it overnight it will have the flashing red light with a notice that the battery is very low in the morning. I can go all day playing games and getting online with my phone and never come close to killing the battery. Also there have been a couple of times where my phone seems to power off and wont go on until I pull the battery and reinstall. Then it comes on. The interesting thing is I could have been using it for a call and before I end the call the screen will go black and I can't get anything to happen even if I push the button on the top. I have to pull the battery out.