T-Mobile: How to activate a new SIM card
If you purchased your device from T-Mobile, the SIM card is probably installed. If not, you must provide your phone's IMEI ...
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Metro by T-Mobile: How to activate your SIM card
You'll add a phone and SIM card to your shopping cart, pick a new number or port your old one, and choose a data plan. To order a new Metro by T-Mobile phone and SIM card, do this: Activate your ...
Can't activate your new T-Mobile SIM? You're not alone
T-Mobile is facing a widespread issue preventing subscribers from using their new SIMs. Multiple users have reported being ...