On January 3, AT&T announced a plan to attract T-Mobile customers with up to $450 in credits. A promotion/store credit of up to $250 is offered for a current smartphone depending on model and age. Plus $200 in credit, per line, if offered if the customer transfers service to AT&T with the Next plan or activates a device they own on AT&T's network.
AT&T's press release said, in part:
Starting today, AT&T is offering T-Mobile customers the opportunity to upgrade their mobile lifestyle with value of up to $450 per line when they switch to AT&T and trade in an eligible smartphone.
In addition to a larger and more reliable 4G LTE network, T-Mobile customers who switch to AT&T will benefit from a superior smartphone line-up and award-winning customer service. With AT&T, customers can take advantage of AT&T's new Mobile Share Value plans, which offer data and unlimited talk and text starting as low as $45 per month with no annual contract. AT&T Next sm offers customers the chance to upgrade to a new smartphone every year for $0 down.
Beginning Jan. 3, under the limited-time offer, T-Mobile customers who switch to AT&T can trade-in their current smartphone for a promotion card of up to $250, which can be used toward AT&T products and services. Trade-in values will vary based on make, model and age of the smartphone, but many of the latest and most popular smartphones will qualify for a value of $250. T-Mobile customers can receive an additional $200 credit per line when they transfer their wireless service to AT&T and choose an AT&T NextSM plan, buy a device at full retail price or activate a device they currently own.
There are terms, conditions and stipulations that should be read. The offer is for a limited time. More information is available at AT&T.