Okay so I recently got an iPhone 4s and love it. I've had an ipod touch since forever so I'm fairly familiar with the system and everything. My question is though when I should be keeping wifi on and when i should be turning it off to maximize my battery life. Now I searched the forum and found out that using wifi will be better for battery life then using 3g. Now what im confused about is say im at home playing a game that requires no internet or 3g such as tiny wings or tetris, should I be turning wifi off and let my iphone use 3g since I wont be using internet then my phone wont be using the 3g. Im not sure if that makes sense but basically I want to know is if wifi uses more battery than 3g when NOT using the internet, is wifi using more battery just being connected then if wifi wasn't connected. Also another question is when I go to sleep at night and keep my iphone on should I turn the wifi off and keep just the 3g on? and then finally say Im going on a drive somewhere in my car should I turn the wifi off, I know I would be connected to 3g when driving but not sure if turning off the wifi will help the battery? Sorry if this is a newbie post im just confused as to when it would be more beneficial to just keep 3g on and when it would be better to just keep wifi on .