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Unlock T-Mobile LG G3 for att

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New member
Mar 12, 2015
I am using ATT network, and was wondering if I can use unlock T-Mobile LG G3 for wife who left her phone on the hood of the car, and it is gone.

Any unlocked sim phone will work for any other Sim carrier so yes. Companies unlock phones so that should not be an issue only thing usually unlocked phones will not get LTE on another carrier

Sher The Love

Senior Member
Sep 13, 2011
Just got a T-Mobile G3 yesterday and using it on AT&T. No issues. LTE works. Just make sure you put in the right APN

Edit: I don't know how the wrong quote got in there....

Sent from my LG-D851 using Tapatalk 4
Last edited:


Senior Member
Apr 2, 2011
São Paulo
As long as you use a QI compatible back cover or a QI compatible Circle Case cover, yes, it does not come with the QI compatible back cover (U.S. carriers crap, unfortunately). You can use any backcover that is compatible with the 855 Model (International LG G3) and that has QI coil and it works fine (I'm using the original LG Circle Case like this one and it works just fine: http://www.expansys.com/lg-quickcircle-cover-for-lg-g3-titan-black-262284/ )


Dec 20, 2010
What APN setting do you use? I just unlocked a G3 today and on ATT 4g I am getting less than 1 Mbps, on my 55 I am getting 14.
This is what I have.

Name ATT Phone
APN phone
Proxy Not set
Port Not set
Username Not set
Password Not set
Server Not set
MMSC http://mmsc.mobile.att.net
MMS proxy proxy.mobile.att.net
MMS port 80
MCC 310
MNC 410
Authentication Type None
APN type default,mms,supl,hipri
APN protocol IPv4
Bearer Unspecified