How to Set Up AT&T 3G/4G APN Settings for Android on Unlocked International Phones!
Here's how to set up AT&T 3G/4G APN settings manually for Android smartphones, this will work on all unlocked international Android smartphones.Name: can be anything
APN: wap.cingular
Proxy: leave blank
Port: leave blank
Username:WAP@CINGULARGPRS.COM
Password:CINGULAR1
Server: leave blank
MMSC: http://mmsc.cingular.com
MMS Proxy: wireless.cingular.com
MMS Port: 80
MCC:310
MNC:410
APN Type: leave blank
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