is the ipad always connected to wifi or 4g/3g even when it is in sleep? During sleep and during use if you are not connected to a wifi network is it always searching for a network? how much battery life does push notifications use? is there a way to turn them off? what about icloud and if you only have find my iphone on? is there a way to turn off push notifications when you are on a cellular network or it always on using small amounts of data untill you turn it off in the settings. I checked my router and it says my ipas is connected even when it is sleeping. Why is it?