I got my phone in November and usually it is near dead by 11 or 12 at night which can live with if I use the phone alot. Yesterday I turned the phone on at about 9 am and I was out all day and the bluetooth and wireless were off for most of the day. I barely played any games and I took like 3 pictures and sent some texts. By 9 pm the phone had less then 10% of the battery left. I bought 2 extra batteries on ebay and am glad I have the option to use them when needed but the battery that came with the phone should sure last more then 12 hours with below average usage shouldnt it? I have done that battery calibrating thing that has been suggested on here where you charge the battery to full while on and off and that doesnt seem to have heled at all.