AT&T $300 trade in credit with Upgrade or Purchase of a new Samsung Galaxy S8, Galaxy S8+, Galaxy S8 Active, or Galaxy Note 8

https://www.att.com/
Get a $300 AT&T Promotional Card when you buy an eligible Samsung Galaxy S8,Galaxy S8+, Galaxy S8 Active, or Galaxy Note 8 and trade in your eligible smartphone with a value of $20 or more.* The AT&T Promotional Card can be used toward AT&T products and services.
Can be combined with BOGO promotion going on and free accessories promo Sumsung is running