Can I use this with AT&T service in US ?
1691211
Yes, the Xperia SP LTE is compatible with AT&T; throughout the US.Thank you.Customer support @ phonenbeyond
1691212
Yes you can use AT&T;, but it also works on the Metro PCS system also, and they will be less expensive than at&t;
1101034
I don't think so. We have AT&T; service, but these phones (we have 8) plug into the wall jack just like any other phone so I don't' think the service provider would matter.
730017
I have an AT&T; voice and data plan in U.S. with a 3G sim card. It works without problems
251083
NOT SURE I am from the Caribbean and it worked well with my provider....so i am guessing it should work with at&t.....
1031887
You should be able to. It is GSM and takes a SIM card. I am using it on Straight Talk, which takes AT&T phones.
623894
Yes. It will not work with another provider unless unlocked. AT&T; has an unlocking policy (www.att.com/deviceunlock).
1560526
It is unlocked, so you should be able to use it with any GSM service provider...850/900/1800/1900 freuencies. AT&T; use GSM 850 frequency.
1358730
I am using it on T-Mobile, but I can't imagine that it wouldn't work with AT&T; as they have the wider choice of bandwidths in the US.
1381160
This phone is locked, you can not use it in other countries. You have to get the phone unlocked by AT&T
1367262
The phone is unlocked so... It should work with your AT&T sim card (3G - HSDPA 850 / 1900 / 2100). My dad used the phone in Venezuela with Movistar (HSDPA 1900) without problems at all!
1612161
I don't think so seeing that it is a T-Mobile sim card. You should try and speak to an AT&T; customer service rep and ask them but I doubt it.
606215
I don't know. What I would do is check with your local AT&T; but DO NOT buy it from them, just either call them or go and ask them.
892491
Yes you can use AT&T; simcard, this phone is unlocked so it works with any mobile operator. I use T-Mobile
58521
By default the phone is locked to AT&T;'s service. If you get the phone unlocked then it is possible to use on T-mobile's service.
256756
Sorry, I can't help you with AT & T. I'm using it with CenturyLink DSL, and it works fine there.
1146499
I have never been to India but I see no reason why you couldn't. The point is not which country but which network. You can use an American ATT phone with an Indian network that is compatible (if the phone is unlocked) but not with another American network that is not compatible like Verizon.
2122193
No this phone is only compatible with AT&T carrier service. Now if you want to you can watch videos on how to unlock the phone which will allow you to use it on any carrier.