How do I unlock my Windows Lumia 640 with an ultra mobile sim?

[Windows Central Question]

windows lumia 640 go unlock and i have ultra mobile sim. so how i unlock this

i have ultra mobile sim. so how i unlock this "windows lumia 640 go unlock"

 

[ven07]

Re: windows lumia 640 go unlock and i have ultra mobile sim. so how i unlock this

Unlocking an AT&T Microsoft Lumia 640 for use on T-Mobile

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