This article explains how to unlock smartphones on T-Mobile, Verizon, AT&T, Boost Mobile, and US Cellular networks.

To unlock a phone on the T-Mobile network, you must meet the following guidelines for your device:

If you meet all of these conditions, follow this process to unlock your T-Mobile phone. The instructions for iPhone and Android differ:

Check if your iPhone is eligible for unlocking: Sign in to your T-Mobile account through a web browser, then select Check Device Unlock Status. You’ll see your iPhone’s unlocked status displayed.