Does it work in USA with AT&T?
947762
Yes it does (it is unblocked and will work with any GSM carrier but not with CDMA ones)
1282005
Yes I have been using mine on ATT for months. The only minor disappointment is that it does not synch with ATT time, so you have to set it, spring forward and fall back manually. But I do not know about email, browser, etc. So it works as a phone but it is not a smart phone on ATT.
612382
Yes, it should work with any GSM SIM card - the phone itself is unlocked. I had no problems getting it working on the AT&T; network here in California. Be aware that it takes a Micro SIM, not a regular size SIM.
730017
I have an AT&T; voice and data plan in U.S. with a 3G sim card. It works without problems
1412744
It should work with at@t all u have to do is get a sim card at the at@t store unless urs fits the sim card slot :-)
647550
It works with T-mobile definitely. Please check AT&T's frequency to make sure it will work.
1347683
Yes it will work with AT&T on their 3g network in any part of USA. Since this is an international phone data speeds will be lower than a locked phone to the network. You can use wi fi to connect for faster speeds.
1792798
Yes I'm using it with at&t, you will get 3.5 G or HSPA+ with at&t . Therefore it will work with others GSM carriers around the world.
1101895
I don't know. USA sim card/phone will work in other countries base on your wireless plan.
482730
It should work with AT&T; with both 2g and 3g. It does not work with T-Mobile 3g in the US. It does not do data in 2g. Providing you have AT&T; 3g available in your area it should work and have data capabilities (if you pay for data).
623894
Yes. It will not work with another provider unless unlocked. AT&T; has an unlocking policy (www.att.com/deviceunlock).
189156
Yes. It is a GSM phone so it will readily work with AT&T and T-Mobile. However, it won't work with Verizon or Sprint.
1132935
It is unlocked, it will work all over the world. In US it works with AT&T and T-mobile. If you use other carrier please check with them. Keep in mind with this phone you will need a MINI / MICRO SIM card.
1122323
No! Ours didn't work well with AT&T;! I was supposed to be unlocked but didn't respond to several AT&T; features!
698735
I had to configure this phone for AT&T in the US. It will work if your carrier there has a SIM card for you but you will have to get them to configure the other features like internet access, Texting, email, etc. As far as I know this phone only works in Europe for 3G service the frequencies are set for Europe. This phone is over 4 years old in design...your money would be better spent on a newer Android phone like a Galaxy S3 or S4 refurbished.
1049954
If you have an AT&T sim card it should work, this is the American version of this phone so its should work as long as you have a sim card
2113584
Hey man,It works all the gsm network around the world. I'm using this with a straight talk SIM card. Which actually shares AT&T; network across nationwide. So I can say "YES".Hope this answer helps you. Have a good day
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!