Hi all .. bought myself an unlocked T-Mobile HTC m8. I use AT&T as my carrier here in the US. I read many forums with outdated apn information. So I'm posting this as accurate and confirmed to work as of 7/15/14. Hope it helps others!
name: ATT Phone
Apn: phone
Proxy: http://mmsc.mobile.att.net
Mms proxy: proxy.mobile.att.net
Mms port: 80
Mms protocal: wap 2.0
Mcc 310
Mnc 410
Apn type: default,mms,supl,hipri,fota
Apn protocal: ipv4
Apn roaming: ipv4
Bearer: unspecified
The rest keep as default. Screen shots below for reference.
Any question and I'm happy to help




name: ATT Phone
Apn: phone
Proxy: http://mmsc.mobile.att.net
Mms proxy: proxy.mobile.att.net
Mms port: 80
Mms protocal: wap 2.0
Mcc 310
Mnc 410
Apn type: default,mms,supl,hipri,fota
Apn protocal: ipv4
Apn roaming: ipv4
Bearer: unspecified
The rest keep as default. Screen shots below for reference.
Any question and I'm happy to help





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