Thanks for posting. I'm sorry to hear your phone is not tethering. Since you are with T-mobile, I recommend you contact their support team either via their community or over the phone.
Let us know if you have any other questions or concerns!
Find out how to track your iPhone's delivery!
Have questions about International Plans? Get the answers on Wed. 10/25 at Hello World: International Plans, from 1-4pm ET / 10am-1pm PT!
Let us help you upgrade and activate your device!