当我尝试打开Tetering / Mobile Hot Spot时，它给了我系统消息"无法连接，数据连接不可用。" 然而，它在过去的工作中使用了这个运营商/电话，互联网仍然有效。我可以在手机上浏览网页。
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:
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.