Important Links

MY CSP: This is the library for everything At&t related. Includes promotions, details, news, devices, etc. 

https://www.e-access.att.com/mycsp/mycspportal/home.do

MST: Mobile Sales Tool is the best way to find out prices & promo's specifically. 

https://mst.att.com/ 

IMEI Checker: Check if the customers phone has a clean IMEI for trading in. 

https://www.imeipro.info/tmobile-imei-check.html

AT&T TRADE IN: Check the value for the customers trade-in device.