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Swapping Sim On At&t


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I have swapped the SIM from my 1020 to my 635 with Windows 10. I cannot use cellular data on the 635. Does anyone know if it can be made to work without burn in the SIM and/or adding another phone to my account?

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Check your APN settings... try these for LTE:

APN : phone

User name:


Authentication Type: PAP

WAP Gateway (URL): proxy.mobile.att.net

WAP gateway port: 80

MMSC (URL):http://mmsc.mobile.att.net

MMSC Port: 80

Maximum MMS size:

IP type: IPv4

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