Love the iPhone 4 - hope they sort out the signal problem - but that's not my question. Since receiving my iPhone, I have fully charged and discharged the battery (took some time to discharge ). I then charged it to 100% again. It was 100% charged by yesterday evening. I caught up on Angry birds for a 1-2 hours, then went to bed. When I woke up this morning, the charge was down to 42%. Ok, why's that? I checked the "Usage" section and the phone has been on standby for 12 hours and being used for 11 hours. Eh? How come? It has been about 12 hours since full charge. This did not happen with my iPhone 3G. I have some push notifications on, I think, FarmVille (pls don't flame for that....), Facebook, ebay, MSN Messanger and perhaps a couple more. I'm also in a poor signal area, but I don't think my phone was struggling to get a signal all night (had one to two bars GPRS). Any ideas what's "using" my phone and eating battery life? I don't want to have to restart my phone every time I go to bed... just to maintain battery.