Starting Saturday August 6 T-Mobile is having a buy-one-get-one free deal, but only for ONE DAY!
If you buy a qualifying Samsung phone you can get a second one of equal or lesser value free when you add a second line to your plan. The qualifying phones include the Samsung Galaxy Note 5, Galaxy S6, Galaxy S6 Edge, Galaxy S6 Edge+, Galaxy S7 and Galaxy S7 Edge.
In order to get this deal you’ll need to buy the phone on an equipment installation plan (EIP), and both phones will require a line of service. You will be credited on your monthly bill for 24 months for the full amount of the second phone after you pay the down payment (and you’ll get credited for that as well).