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¿Necesitas ayuda para desbloquear un dispositivo? Aquí te decimos cómo hacerlo.

  • 21 February 2023
  • 30 replies
  • 2470 views


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30 replies

When I try to unlock the network, it says this.

Unlock Failed

Unlock Failed: This mobile device is not eligible for unlock. For device Unlock eligibility details, please go online or contact Customer Care.

(SERVER ERROR: ERROR CODE=255)

Userlevel 7
Badge +13

My phone is T-Mobile REVVL 4. How did you unlock it? 

Once you get the notification that the device is eligible for unlock, you’ll go to Settings Network & Internet > Mobile network > Advanced Network Unlock

The steps for this device and many others are listed on our support page. https://www.t-mobile.com/support/devices/unlock-your-mobile-wireless-device

My phone is T-Mobile REVVL 4. How did you unlock it? 

Userlevel 7
Badge +13

i want to unlock myphone 11 promax

Hey @cuongbalew. Unlocking iPhones is super easy now that the unlock process is automatic. Have you received the text message that your device is eligible for unlock?

i want to unlock myphone 11 promax

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