Anyone know process for going from T-Mobile BYOD SIM to AT&T (or vice versa) ?

[scdavis0]

Would this require a full number port to the new SIM, or is this something that straight talk could take care of without this?

[bsharitt]

When activating the SIM, use the transfer number options and there's actually selection to swap from one ST phone to another.

[Loansharkie]

When activating the SIM, use the transfer number options and there's actually selection to swap from one ST phone to another.

There's a specific link on the website after you log in as mentioned above. I switched from a n10 phone to byod sim. On the net10 website it was dead and I had to call cs, by that was quick and painless. Hope it works on the ST site.

Also....
Does this render the original sim dead, or can you switch back to it later without ordering a new one? I have the tmo and am thinking of playing around on the att side, but want the ability to switch back without shelling out an extra 15.

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[maestroteague]

Does this render the original sim dead, or can you switch back to it later without ordering a new one? I have the tmo and am thinking of playing around on the att side, but want the ability to switch back without shelling out an extra 15.

From all accounts on this forum, when you transfer the number from the first SIM, it WILL render the original dead. You cannot transfer back to it. You would have to buy a new one for $15 if you want to switch back.