How to activate any T-Mobile SIM card - Android Authority
SIM card & eSIM | T-Mobile Support
B2G Test Drivers/Prepaid SIM - MozillaWiki
Hayelom Fessha ® on Twitter: "If you have a @TMobile 5G phone... it's important that you make sure you're using a new R15 SIM card to access all of our new network.
How to activate any T-Mobile SIM card - Android Authority
T-Mobile Activate Sim: A Step-By-Step Tutorial
Ask a Mobile Expert: How Do You Activate an eSIM Card? (Video) ‑ T‑Mobile Newsroom