I'd like to turn my 4g off and use 3g to save power, but I want to easily be able to switch it back quickly if I want to stream YouTube or something like that. - Is there an app that does this?? - Does anyone else do this, and if so, what are the drawbacks? - I'd imagine that it doesn't affect phone calls too much, right? I am rooted on BAMF 3.0 RC4 and the MR2 radio. Thanks!