Wil US T-Mo One S work on AT&T?

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I have AT&T service in the US and was interested in purchasing a US T-Mobile gradient blue One S to use with it. Will there be any issues with 3G/4G? Does the US T-Mobile One S support AT&T's data network fully?

Yes but I believe you will only get Edge Data.

EDGE is not 3G though, right?

Anyway, to quote Amazon.com's One S Page:

It runs on T-Mobile's 4G HSPA+ networks (850 MHz;900 MHz;1800 MHz;1900 MHz;UMTS: Band I (2100);UMTS: Band IV (AWS);UMTS: Band IV (1700/2100)).

That would mean it should work on AT&T's 3G network, right? 850/1900Mhz?

Bah, this is all so confusing.

EDGE is not 3G

You won't get 3G/4G speeds on AT&T with this phone.

Yes, what he said ^^ No 3G or 4G

On GSMArena Review their is written that it is at&t friendly as it has 850/1900 MHz Bands

Originally Posted by hskharkunwar

On GSMArena Review their is written that it is at&t friendly as it has 850/1900 MHz Bands

There's more than one version of the One S. The international One S will work on AT&T just fine.

Both the box it comes in and the specs on the T-Mo support site says the T-Mo One S supports:

Network
3G/4G Capable
GSM 850, 900, 1800, 1900
Band I (UMTS2100), Band II (1900), Band IV(1700/2100), Band V (850)

So I think it would get high speeds on AT&T.

I got this same question.. so if I buy this phone on US t mobile it will work with at&t 3G..?? If so I will be buying it right now..!!

Sent from my HTC Sensation XE with Beats Audio Z715e using xda premium

Just so you guys know, I bought an One S for use on Wind (Canadian network) and cannot find any site online that can sim unlock it.