Both the existing customer and the new referral would get unlimited LTE data for one full year.
Anyone who is currently a T-Mobile Simple Choice customer can, for a limited time, refer a friend from Sprint, Verizon, or AT&T to the same service. Once the new user is ported over to T-Mobile, and the referral process has been completed (within 30 days of the switch), both the new arrival and the original customer get one full year of unlimited LTE data service.
T-Mobile customers who already have unlimited data aren't being left out of the promotion, either, as they would instead receive a $10/month credit on their bill for the same 12-month period.
While the promotion is open to anyone coming from Sprint, Verizon, or AT&T, the move is squarely targeted at existing Sprint customers. The latter recently rolled out a new famiy data plan -- 20 GB for $100/month -- but the fresh offer is not available to existing Sprint subscribers.
Family plan aside, Sprint is also offering a new unlimited everything plan for individuals at $60/month.
Signing up for the cheapest T-Mo Simple Choice plan ($50/month; unlimited data, but only 1 GB at LTE speed) with a referral would net you unlimited 4G LTE data for a year, at about $600 total. Good? Bad? Dicey? Leave your thoughts in the comments.