Well if you are like me your data doesnt work. For some reason when I bought my S2 from ATT it was shipped with an incorrect configuration for the data. To correct this do the following.

  1. Goto Setup
  2. Wireless and Network
  3. Mobile Networks
  4. Access Point Names
  5. Hit Menu
  6. Select New APN

Now you want to enter the following

  • Name: ATT
  • APN: wap.cingular
  • Proxy: Not Set
  • Port: Not Set
  • Password: Not Set
  • Server: Not Set
  • MMSC: http://mmsc.cingular.com
  • MMS proxy: Not Set
  • MMS port: 80
  • MCC: 310
  • MNC: 410
  • Authentication type: None
  • APN Type: internet + mms + supl

Then make sure you select ATT and your data should start working