Using this one and it gets LTE! MMS also works. I did a BYOP plan at the store the past week since it stacks with my company's discount. I used my girlfriends Nexus 5 IMEI and got it working right away on LTE!
Name: ATT Phone
APN: phone
MMSC: http://mmsc.mobile.att.net
MMS Proxy: proxy.mobile.att.net
MMS port: 80
MCC: 310
MNC: 410
APN type: default,supl,mms,hipri
Using this one and it gets LTE! MMS also works. I did a BYOP plan at the store the past week since it stacks with my company's discount. I used my girlfriends Nexus 5 IMEI and got it working right away on LTE!
Name: ATT Phone
APN: phone
MMSC: http://mmsc.mobile.att.net
MMS Proxy: proxy.mobile.att.net
MMS port: 80
MCC: 310
MNC: 410
APN type: default,supl,mms,hipri
So far so good, but I will found out more tomorrow when I am on the train. That is where I have the issues.
Did you get from OP or from a reseller?This didn't work for me. I still have no LTE. I might have to try giving a different imei to see if that works.