I have an HTC Thunderbolt. My phone is no longer active however I have been using the wifi capabilties for some time now. A week ago after turning my phone on due to the dead battery I could no longer turn on my wifi. The little button that says on/off is gray and will not allow to me to turn on the wifi. When clicking on wifi when it says "wifi off" I will wait several minutes and then the only thing I get is a small "Error" below wi-fi. I have factory reset my phone numerous times and still nothing. I cannot access any wifi networks to forget them and restart, as that option is simply not there. I do not understand the issue and was hoping someone smarter than I that would assist me.