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Unlocked Tmo G2 with ATT ST sim

Would an unlocked tmobile g2 have support for att's hsdpa/lte network? I want to use one with my att st sim. Or would I be better off getting an att g2?

not lte but hspa+

So there is no flashing an att modem to get the lte to work huh?

Tmobile LG2 on ATT Network?

Does the Tmobile variant supports ATT LTE bands?

http://forum.xda-developers.com/showthread.php?t=2464526

Getting LTE on Cricket (AT&T)

Has anyone been able to get LTE to work on the Verizon Galaxy Note 3 on crickets network, LTE is available in my area and it is a LTE compatible sim. All I'm getting it HSPA+, is their a workaround or trick to get LTE? Thanks for any and all help!

Note 3 doesn't have same lte bands as AT&T. It does have same as T-Mobile.

Will this work on AT&T with lte

Just wondering if this will work on att or straight talk with lte or even h+??
Thanks
Also isn't this phone the moto x play but renamed for Verizon? (BC same specs, size, screen, battery) lol
Sent from my GT-N7105 using XDA Free mobile app

We have tried it with cricket Wireless.
We have tried it with Cricket Wireless with no issue, and Cricket is now owned by AT&T

Yes it should work on AT&T as it supports LTE Bands 2/4/5 where available. In areas that this phone will not work on LTE it will drop down to 4G(HSPA+ or H+) on AT&T or Cricket, or H2O, or Airvoice, or Consumer Cellular, etc.
Also supports T-Mobile's LTE on Bands 2/4. Band 4 for Major city's T-Mobile LTE and Band 2 for some rural areas T-Mobile LTE.

USA: xt1644 on AT&T network.

Here's a simple question that gets shockingly complicated.
I have a xt1644 on AT&T, and have my previous phone (zenfone 2) on T-Mobile.
When I used the zenfone 2 on AT&T I could never get an LTE signal, but when using the zenfone on Tmobile i get LTE all the time.
On AT&T, my zenfone said it was in HSPA mode. Now my MG4+ also shows in HSPA.
Interesting sidenote. I travel across the country, and it doesn't matter what market I am in, same results across carriers (no lte on AT&T, but get it on Tmobile.)
Is there any way to figure out what bands which carriers are using, and perhaps add the LTE band for AT&T to my XT1644 radios???
Yes, even I am confused.. but that's it in a nutshell.
Ongoing question: any good roms out of testing for US/xt1644??
Mark

I am using the Cellmapper app. If you are rooted, it can read the LTE band frequency directly from the Qualcomm radio.
I have used the XT1644 with both metroPCS (T-Mobile) and now Cricket wireless (AT&T) and the latest has more consistent LTE connection.