For a limited time in all markets, new customers activating at least 3 voice lines on select Essentials, Magenta, Magenta MAX, Business Unlimited Select, Business Unlimited Advanced or Business Unlimited Ultimate (2-5) rate plans and existing customers with 1 paid voice line on an eligible plan activating at least 2 new voice lines will receive 1 voice line free (via monthly bill credits).
This deal is perfect for customers switching to T-Mobile with 3 or more voice lines as they get one of the voice lines for free!