Tethering won't work claiming data connection is unavailable When I try to turn on tethering/mobile hot spot it gives me the system message "Unable to connect, data connection not available." However it worked in the past with this carrier/phone and the internet still works. I can browse the web on my phone fine.

Things I tried so far: 


restarting my phone
Taking it in and out of airplane mode
turning wifi off and on
turning on and off power saving
turning sync on and off
turning off high performance mode.
resetting all network settings
I never did figure out what was causing this issue. I finally was able to fix the issue, though, by completely resetting the phone to factory settings and setting it up again.