T-Mobile announces Black Friday deals and get two free lines on Magenta Friday

This weekend only, new and existing customers can get two free lines of service for a smartphone or tablet. If you are a new customer, buy two lines of service on T-Mobile ONE and get two more for free. Existing customers with two or more lines can add up to two free lines. This is for the weekend of Friday November 18 through Sunday November 20, starting off with T-Mobile’s “Magenta Friday”.