Costco Agrees to Sell AT&T Wireless Plans, Handsets

San Antonio, Costco Wholesale Corp. and its retail wireless marketing partner Wireless Advocates have agreed to carry AT&T Inc.'s phones and service plans at nearly 370 warehouse stores nationwide, according to the San Antonio Business Journal.

This relationship between AT&T and Costco will expose AT&T products to more than 35 million Costco members. Costco customers will be able to buy AT&T handsets made by Samsung, Nokia and Motorola. They will be able to activate their service as well.