You are downloading the myAT&T XAP file v18.104.22.168 for Windows Phone. myAT&T is a free and useful Productivity app: There’s a faster way. Get more done with the myAT&T app. myAT&T lets you manage your AT&T Wireless, U-verse®, home phone and ... You can now download the offline XAP file to install & try it.
Download Locations for myAT&T 22.214.171.124 XAP file
Important Notice: Now Due To Unspecified Limitations, You Can Not Use The Offline XAP File To Install It Any More.
To try to install it manually from an SD card, you should choose one of the server location above to get the offline myAT&T XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.