i have a question too, my iphone4 battery seems to die very fast now, last time can last me whole day, even with some games on, now when i leave my house this morning it was 100%, whatsapp for 5 minutes then become 90% play game for a while, battery drained to 60% and now almost 6 oclock i only have 44%, i think by the time i reach home at about 9ish it will be 20-30%, so is this normal or my battery got problem? send to maxis to check/change?

already done that before, and just to make sure i even turn off my phone and turn it back on, but the batt still drains very very fast