Learn how to use the Mobile Device Unlock code of the Samsung Galaxy S8.
SIM unlock phone
- Determine if devices are eligible to be unlocked: Mobile Wireless Device Unlocking.
- From the Home screen, swipe up on an empty spot to open the Apps tray, tap the T-Mobile folder then tap Device Unlock.
- Tap Continue.
- Wait while the device connects to the server.
- Choose the desired device unlock type:
- Permanent Unlock
- Temporary Unlock( Temporary unlocks must be performed with a mobile data connection. Wi-Fi will not work)
- Wait while the device requests the unlock.
- If successful, restart the device to apply the settings.
- Permanent Success
- Temporary Success
- If you do not restart the device, you will have a persistent alert in the notification tray.
- If you receive any error messages after attempting to permanently or temporarily unlock your device, contact customer care to inform them of the issues you are receiving.