T-Mobile completed its purchase of UScellular’s wireless operations on August 1, 2025: more than four million customers, the stores and part of the spectrum. The UScellular brand is moving to T-Mobile in phases, and on October 5, 2026 every uscellular.com address we tried landed on t-mobile.com. If you own a phone bought from UScellular, this is what T-Mobile’s pages say about it — and what they no longer say.
What changed for UScellular customers
| What T-Mobile says | |
|---|---|
| Your phone | Nearly all UScellular phones keep working on T-Mobile; T-Mobile contacts you if a device-specific step (or a new SIM) is needed |
| Your account | Accounts that moved use a T-Mobile ID (UScellular logins don’t carry over); UScellular’s Account Lock became T-Mobile SIM Protection and Port-out Protection |
| Prepaid | UScellular Prepaid accounts were suspended; T-Mobile’s page tells those customers to port their number to T-Mobile or another provider by the dates it prints, or lose the number |
| Business accounts | Moved to T-Mobile for Business in stages during 2026; a device or SIM swap, when needed, had a 30-day window after the move |
| Watches | Apple Watch, Galaxy Watch and Pixel Watch users start an eSIM download on the watch after the move |
Where the unlock rules stand
T-Mobile’s own device unlock policy still tells “current UScellular customers” to read UScellular’s unlock policy — but that address now redirects to T-Mobile’s general legal page, and no UScellular-specific rule is published anywhere we could find. T-Mobile has not said in writing whether a UScellular-bought phone counts as “sold by T-Mobile” under its 40-day postpaid and 365-day prepaid rules. So treat a UScellular phone like this:
- 1Check the lock status firstSign in to your T-Mobile account (Accounts → the line → Check device unlock status) or open the T-Life app (Manage → the line → Device lock status). An iPhone shows it under Settings → General → About → Carrier Lock; what carrier is my phone locked to covers Android.
- 2Motorola bought through UScellularT-Mobile’s support page has a section for exactly this: if the phone is eligible but the unlock doesn’t complete, keep it on Wi-Fi or the T-Mobile network and powered on; when the “SIM Unlock” message appears, open its menu (⋮) and choose Refresh so it downloads the latest unlock information. If it still fails, restart, check the connection and contact T-Mobile.
- 3Everything elseContact T-Mobile with the IMEI and ask them to apply their policy to the phone. Keep the answer in writing.
When an IMEI unlock makes more sense
A phone that T-Mobile says it can’t unlock, a used UScellular phone still tied to a closed account, or a prepaid phone whose account was suspended in the transition: our US Cellular unlock page lists the unlocks we offer, each with its live price and delivery estimate; every other network is on our carriers page. Run an IMEI check first if the phone was bought secondhand.
