Hey Laxx, it may be obvious, but if you're anything like me you tend to be in areas where you need WIFI or (not and) 3G. If you're always shutting the other off (so rarely having WIFI and 3G both on - eliminating one searching for signals) at least the 3G bat life improves greatly. Seems an irritating bother, but in practice not really. Settings > Wi-Fi when at getting home/work. Settings > General > Network > Enable 3G when out and about. And of course the opposite to turn the other off.