So after you flash this when you switch 4g off it automatically defaults to 3g, and not 1x correct? Sorry for sounding like a total noob here, but right now I am not too close to a 4g area, but will be going somewhere soon that will. And I just want to be prepared for battery drain while I am out with no way to charge.Flash this, adds an option under Wireless & networks to give you a Radio Info option, u can switch the 4g on and off in there.