unlock old t-mobile zest

[spasmatron]

can anyone tell me how to unlock an old t-mobile zest?

I ported the number to a different network years ago but would now like to use the handset with my current sim?  

I have the old sim (now ported)  and the new sim for the different provider, but none of the old paperwork for the phone.

Any suggestions appreciated

[XRaySpeX]

@spasmatron : You can just apply for unlocking by using the Unlocking your device form and giving its IMEI no., which you can obtain be dialling *#06# into its keypad.

[spasmatron]

thank you very much, unfortunately I just get an error message

"Please try that again

Sorry, something went wrong on our end. Please enter your IMEI again or come back later"

perhaps because I ported my sim?

[XRaySpeX]

Porting makes no diff. It's all done by IMEI of the device which never changes.

[James_B · Accepted solution]

Hi @spasmatron,

I'm sorry your IMEI isn't recognised online. Please get in touch with Customer Care so a member of the team can help.

James