I understand that wifi uses less battery than 4g. I have toggle widgets for both wifi and 3g/4g. So I assume if both are toggled off then I have no data service (email etc.) correct? I have the motorola Smart Actions app and the Verizon Wifi Auto On app. So when at home with my wifi network would it make sense to toggle 3/4g off and have wifi on and then when gone just the opposite? Would this save battery life? Does anyone know how to accomplish this automatically? Wifi Auto On turns on Wifi when I get home but I wonder if there's a way to toggle OFF 3g/4g too? addendum - I figured out how to auto turn off 3g/4g when connected to wifi - Smart Actions can do that - BUT not the other way around - auto turn back on 3g/4g when off wifi - anyone know of an app that does that? Thanks!