On most modern T-Mobile Android phones (like the REVVL series ), you can find this in Settings > About Phone > Device Unlock .
: Unlike Android, iPhones do not use an "app." Once T-Mobile approves the request, the unlock is applied remotely through Apple's servers upon the next network check-in. Important Distinction: Official vs. Third-Party T-Mobile device unlock VARIO UNLOCK TOOL TMOBILE-MOBILE PHONE
iPhones are unlocked remotely by T-Mobile once they become eligible; there is no separate app to run. Contact T-Mobile support to verify the status. Third-Party Tools (Warning) On most modern T-Mobile Android phones (like the
, an older smartphone model, typically requires a traditional rather than the modern "Device Unlock" app found on newer Androids. Steps to Unlock Your T-Mobile MDA Vario an older smartphone model