T-Mobile internet plans offer 5G internet over a fixed wireless network that spans all 50 states. Learn if T-Mobile is right for you.

If you have service through a different carrier, call their customer service number to ask how you can protect your account. Most likely, you'll be asked to create a PIN or passcode.

To do this, call 611 from your T-Mobile phone or dial 1-800-937-8997 from any phone. The T-Mobile customer care representative will ask you to create a 6-to-15-digit passcode that will be added to ...

Contact T-Mobile Customer Service: You can use your phone, and SIM card to change your number from your T-Mobile phone, by dialling 611 or 1-877-746-0909 and follow the instructions. There is a $15 ...