Deal: Buy one iPhone, get the second one 50% off at T-Mobile

T-Mobile struggled so much before the iPhone was finally available for the un-carrier. These days, when it comes to aggressive promotions, the other carriers are always second or third to follow after T-Mobile.Just in time for the iPhone SE, T-Mobile is offering a 50% discount for any second iPhone to customers who purchase any iPhone on an Equipment Installment Plan (Not leased devices).