T-Mobile is really pushing its promotions this tax season. The third largest US carrier is offering a new limited-time promotion which can be combined with T-Mobile's already ongoing "Third line free" deal. Any new or existing customers that port their phone numbers to T-Mobile and trade in an eligible device will be able to get a free iPhone 7 or 7 Plus (valued at up to $650) via mail-in rebate on a prepaid MasterCard. The promotion starts today, so you can walk into any (participating) T-Mobile store with any of the following devices eligible for trade-in: All memory variants and...
Source: http://www.gsmarena.com/deal_free_iphone_7_when_you_switch_to_tmobile_with_qualifying_tradein-news-23771.php
