CAN IT USE IN USA? BY at&t or t-mobile
1100789
Hi and thank you for interest. Yes, you can use it with both carriers, but you will not get the 3G, because they do not operate at 2100Mhz, which Jiayu G3s supports.
1100790
If you use this phone for 2G network, it supports both at&t; and t-mobile.This cell support 3G WCDMA 2100MHz. T-mobile：1700/2100(WCDMA); AT&T;：1900MHz(WCDMA); So you can use T-mobile to access 3G network with this phone.
1660095
You must ask the seller specifically. My friend bought the unlocked, international version and couldn't get voice mail on AT&T; as the phone wasn't pre - loaded with AT&T;'S own software. As I explained in another review, it's a great phone for international travel, but not ideal for US usage. I have heard, though, that T-Mobile works well with this phone.
1131552
This phone does not support LTE or 4G in US. T-Mobile supported up to 2G and AT&T; up to 3G.
1215947
This particular phone is "unlocked" and is able to be used with any GSM carrier in the world. If it was "locked" it would only work with AT&T; in the USA.
2093676
In theory you should be able to US Cellular to unlock the phone, either by taking it to a local store or by sending it to them. AT&T; might be able to unlock the phone since it's not under contract. So yes it could be made to work on AT&T; but it won't be compatible right out of the box. I would check with AT&T; and see if they are willing to activate it. It is always up to the company to decide whether to accept an unlocked phone and I'm not sure what AT&T;'s policy is.
342505
Since the phone is unlocked you should be able to. But I would call AT&T; just to be sure. Hope this helps.
1515281
This is a Unlocked phone, I use one number from Brazil and another from USA, probably you will not have problem with T-Mobile.
338512
ATT in US??? That's what I need, but I am unsure of compatibllity with ATT (and company return policy if product fails in US).
602803
It isn't a phone intended for the US market, mine works fine on AT&T; in the US. I have not tried to use mine out of the US. The unlocked 720 should work for you anywhere on a GSM network so long as the frequency is supported by the phone.
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.
1210932
When I cam home to the US I purchased my sim from AT&T. It works great. I was using it in Brazil and using a TIM sim.
1026040
I dont know. I used it in Europe with a GSM sim card from Switzerland and it worked fine. Since AT&T; uses the same GSM type of system and the phone is a quad band phone, useable in both the US and Europe, I don't see why it wouldnt be just fine for AT&T; service. It is a basic phone, but fun, small and compact.
1203334
I believe this can be used with t-mobile, i tested with at&t; sim card and it worked fine before sending this to different country.
152489
The difference is the frequencies it uses. Global GSM will be fine for ATT, you will probably want US version for t-mobile though.
1218103
Yes, it works with AT & T and in the U.S. My daughter has AT & T and it works fine.
106093
I don't know if it can be used in your country. In US can only be used with Verizon.
1530364
This is locked to AT&T.; You'll need to unlock to use with another carrier in US or international