My daughter was having probs w her phone, and the only option for now is to used my ex's rooted thunderbolt. It will not hook up to wifi. after a minute or so of "turning on", it says "error". The phone will use 4G, but it obviously eats up data. I have no idea what the settings mean (WPA, WEP, DNLA...whatever), how to get to them on the phone, and even if they can be changed. Is there a way to UN-ROOT the phone?