We just changed our service from ATT to T-Mobile. When we got the SIM card and installed it, the number changed. How do we get our phone to ring on the original number that we were using before moving to T-mobile?
You need to port your number to T-Mobile.
Transfer your phone number to T-Mobile
Transfer Cell Phone Number | Switch Cell Phone Carrier | T-Mobile
Retrieving data ...
Manage your T-Mobile account
Use the T-Mobile App or your My T-Mobile account
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