This is a brief overview of T-Mobile Postpaid and how to get the information you will need if you wish to port your phone number out to a different company. You can use the information below to get your T-Mobile Postpaid account number and transfer PIN.
T-Mobile Postpaid Contact Info
Customer Service: 1-877-746-0909
Hours: Monday – Sunday: 3:00AM – 10:00PM (PST)
What network does T-Mobile Postpaid use?
T-Mobile Postpaid runs on the T-Mobile network.
Brands that became T-Mobile
If you are looking for one of these, its own page carries the detail for that era.
- Sprint Postpaid — Sprint merged into T-Mobile on April 1, 2020. A surviving Sprint postpaid line is a T-Mobile account today.
- US Cellular — T-Mobile acquired its wireless operations in a deal that closed on August 1, 2025.
- MetroPCS — rebranded by T-Mobile as Metro by T-Mobile.
T-Mobile Postpaid Porting Instructions
T-Mobile Postpaid uses a 9-digit account number (NOT phone #) on your bill. Password can be an actual word. Call to verify.
Cannot find your carrier? Browse the full list of US carriers and MVNOs.
Check coverage before you port
T-Mobile Postpaid runs on the T-Mobile network, so the coverage you get at your address is T-Mobile coverage. Check it on T-Mobile’s own coverage map before you start the transfer.
Your right to keep the number is federal, not a carrier policy. The rule is the FCC’s: Portability: Keeping Your Phone Number When Changing Service Providers.
Working a counter? The T-Mobile Postpaid transfer PIN lookup puts these steps on one screen and texts them to the customer.
Where T-Mobile Postpaid customers usually go next
T-Mobile Postpaid runs on T-Mobile’s network, so the phone in your hand is already T-Mobile-compatible. These carriers will take it with no compatibility question.
Metro by T-MobileT-Mobile network, prepaid
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Check T-Mobile Postpaid before you switch
Two free tools. No sign-up, nothing stored on our side.
T-Mobile Postpaid APN settings
T-Mobile Postpaid runs on the T-Mobile network. These are the APN settings T-Mobile Postpaid publishes for Android.
| APN name | T-Mobile |
| APN | fast.t-mobile.com |
| MMSC | http://mms.msg.eng.t-mobile.com/mms/wapenc |
| APN type | default,supl,mms |
| APN protocol | IPv4/IPv6 |
| Roaming protocol | IPv4/IPv6 |
| Bearer | Unspecified |
Other APNs T-Mobile Postpaid publishes
- epc.tmobile.com for non-LTE devices
Source: www.t-mobile.com · Checked 2026-09-22.
Open the full APN settings tool for T-Mobile Postpaid
Other carriers on the T-Mobile network
These brands use the same towers as T-Mobile Postpaid. Coverage is the same. Price, data priority when the network is busy, and customer service are not.
See which network every US carrier uses · Open the transfer PIN lookup