Sim question

**budda109** · 04-23-2012, 10:53 AM

When you order a sim from straight talk. You select T-moble or at@t. If you order an at@t ,will it work in t-mobile? Now I know it won't do that from the provider but will it work that way from straight talk. I ask because if its ST it is not bound by same rules and I think the phone finds the towers right?

**Kim Manzoni** · 04-23-2012, 04:54 PM

I believe you have to select the SIM for the towers you want to use.

**budda109** · 04-23-2012, 07:31 PM

So maybe? lol

**maestroteague** · 04-23-2012, 07:35 PM

Originally Posted by budda109

When you order a sim from straight talk. You select T-moble or at@t. If you order an at@t ,will it work in t-mobile? Now I know it won't do that from the provider but will it work that way from straight talk. I ask because if its ST it is not bound by same rules and I think the phone finds the towers right?

If you choose the AT&T sim and you are in an area that has AT&T towers, it will only communicate with AT&T towers, even if the tmobile towers are stronger. If it will get any signal, even weak, from an AT&T tower, then it will not roam over to the tmobile tower. If you are in an area that has no AT&T tower, but does have tmobile, then you will have voice and text service, but no data, with the tmobile tower. This also applies with some smaller regional carriers with whom ST has roaming agreements, and some of those even include data. But where there are both types of towers, you only get service from the ones that match your sim.

**efparri** · 04-23-2012, 08:18 PM

If the phone is locked to T-Mobile, the AT&T SIM card will be rejected.

**budda109** · 04-24-2012, 04:57 PM

Originally Posted by efparri

If the phone is locked to T-Mobile, the AT&T SIM card will be rejected.

It is a Straight talk sim.

**dustman81** · 04-24-2012, 05:14 PM

Originally Posted by budda109

It is a Straight talk sim.

To the phone, it's a T-Mobile or AT&T SIM. If a phone has a AT&T SIM lock, it will only work with the Straight Talk AT&T SIM. If the phone has a T-Mobile SIM lock, it'll only work with the Straight Talk T-Mobile SIM. If the phone is unlocked, then you can pick the SIM that would work best for your area.

**annepani** · 04-24-2012, 05:18 PM

Originally Posted by budda109

It is a Straight talk sim.

There really isn't any such thing as a Straight Talk sim. There is a Straight Talk-provided sim for use on ATT and a Straight-Talk provided sim for use on T-Mobile.

I think the answer to your overall question is No. No, you cannot choose one sim and then operate on the other's towers.

maestroteague gave the complete answer to your question.