MetroPCS offers free Android smartphones when you switch to its unlimited LTE plan
The conditions of the deal/s may have changed since the initial publishing of this post.
Starting today, new and existing customers who add at least one new line of service will receive four lines of unlimited talk, text and LTE data for just $100 (taxes and fees included). Usually, MetroPCS customers must pay $50 for the same plan, but the current offer will lower the cost to $25.
Here is the list of Android smartphones that you'll be able to choose if you decide to port to MetroPCS: Alcatel Fierce 4, Alcatel Fierce A30, Coolpad Defiant, LG Aristo, LG K20 Plus, Motorola Moto E4, Samsung Galaxy J3 Prime, Samsung Galaxy J7 Prime, ZTE Blade Z Max, and ZTE Avid TRIO.
source: MetroPCS
Things that are NOT allowed: