Last night, I turned my phone off and back on in order to get my bluetooth earpeace to connect. Some time after this, I noticed that my i-phone 4s, running the latest ios, was on 3g instead of my wifi network. I went in to settings, wifi, and found no networks. Restarting the phone seemed to fix the problem for a while. I got up this morning, noticing that my phone is once again on 3g. I reset network settings, no wifi, reset all settings, still no wifi, restarted the phone, still nothing. Under the wifi settings, voiceover says wifie off dimmed and i can't turn it on. Any help to fix this problem is welcome!