Will this work with an existing at&t contract? We just want to upgrade the phones. Can we also use the sim cards in our phones that we have now?
311196
If it said att then it will work with att service. It works but I have problems with my sound.
311197
Yes as long as it is an AT&T; plan and chip you'll be fine and as long as it's a micro SIM card meaning the smaller chips it will work!
311198
It should work. You should just be able to put your existing SIM card in this phone and it should work. I used it both with AT&T; and I also used it on straight talk. The 4s takes a micro SIM card.
311199
I think you can with a existing and you will need a new sim for the iPhone but sometimes att will provide one ?
311200
Hello, to my knowledge it should work with an existing contract. I completed my contract and have purchased a new phone that is under contract so there aren't any holds or anything on this phone; however, I'm not sure what type of activation fee AT&T; will charge. The iPhone 4s uses a Micro-sim card.
311201
Yes, you will be able to remove your sim and insert it in the iPhone 4S. Just make sure it is a 4S device, as the iphone 4 devices do not have sim card slots.
964777
Not sure what do you mean. I just inserted the SIM card and worked. About AT&T, it is compatible with their bands.
1150702
My husband just put his old SIM card in and used the phone on our contract. It will only work with T-Mobile, however.
1885533
Yes, when you get the phone and initially turn it on, select activate, then you can use it on an existing contract....I went on line and did mine with Verizon (switch device feature from old to new phone)
1558786
If AT&T; uses SIM cards then it would. As I understand it though it is not a GSM network, meaning you don't need a SIM card to connect to the network. This phone is specifically for GSM network use. So companies like T-Mobile, Walmart Family Plan, and Virgin Mobile would work with this phone. A simple Google search like "is (insert provider name) a GSM network?" should help you know if this phone will work with your provider.
1890468
Yes. I replaced with it a phone that is on AT&T; plan. Just move the SIM card to the new phone.
655463
Yes Audrey... you can put a SIM card in this phone and it will work with AT&T.; We have AT&T; mobility service and that is just what we did with three phones in our home. No complaints from my husband and son regarding this phone; I however have a Samsung Flight, no complaints on this phone either.
1457760
Hello Alyssa,Be sure to purchase one that uses the ATT network. I've purchased 3 of them an the SIM cards and plan from AT&T; store work great! I'll get a 5 next year.
1111306
How does an unlocked phone work. I have ATT and have no contract. Will this phone work?
2263066
You can put your at&t; sum card in this phone and it will work without having to renew your contract or activation fees. All other data plans and charges are separate and depend on your plan.
892491
Yes you can use AT&T; simcard, this phone is unlocked so it works with any mobile operator. I use T-Mobile
1199494
Yes- the phone works with other SIM cards. I use Straight Talk,but it runs off of AT&T; towers.As long as the provider has service in your area, you should be good to go!
1781945
I was a cingular customer on a month to month contract. I renewed a 2 yr. contract with AT&T through amazon and bought this phone. The phone will come with a new 3G sim card, which you need to use in order to take advantage of AT&T's 3G network. Once you get the phone and new sim card, just call AT&T and they will activate your new sim card and at the same time deactivate your old sim card. You can keep your old number (which I did), or you can pay $36 to activate a new number. Also, there is an $18 charge to upgrade your equipment/phone (standard fee).
887882
The phone is locked with at &t.; So when i went to one at&t; store, they told it will work with any at&t; sim... but i unlocked the phone paying money and i am using it now in a different country with a different service provider...
784156
the 3G network of AT&T is WCDMA, and this phone support WCDMA, so it will still work with your SIM card
473791
I mentioned it was a Verizon product and I am with Verizon and it worked with that plan. Don't know about ATT.
1325581
I am almost positive that you will be able to use that SIM card. I was told that any At&T card can work in any At&T phone. However, if the one phone is not 3g, then you will have some limitations. Since you are going from 3g to 3g, you should be ok. I was ok when I switched over to this phone. I had an intermediate phone that was AT&T that was not 3g, i could not make international phone calls. So, I got this Pantech and am getting international phone call capability.