I'm looking for a good all around phone with great connection and is Sim based (I'm a t mobile user). it needs to have at least 12 hours of battery life under heavy use and maybe like 20 idle. i play a lot of games and stuff and find myself using my phone all day. it doesn't have to be a flag ship phone I'm not looking to spend much more then 400 at max 500 but at least carry a decent camera. also is there a difference between receivers like does one phone get more bars then others because i move a lot and find it hard to get connections sometimes.