I have been reading about this app "LTE On/Off" app, since my Razr Maxx has been going back and forth between 3G and 4G since I went to ICS, so in an effort to save a little bit of battery, I was thinking I would use this app to just keep the Maxx on 3G ... my 4G signal is marginal where I live, despite being in a metropolitan area, and it goes back and forth constantly. By using this app, can I go from 3G back to 4G if I am in a good area? Or does the app keep the phone on 3G only? Can I still get 4G? Thanks!