It seems like every other week another wireless carrier is dangling a limited time promotional rate plan. T-Mobile today ​announced a deal that looks to steal away Sprint subscribers by means of discounted rates and free handsets.

Whether targeting single line users or families, it feels as if there’s always some money to save by switching service providers. Brand loyalty and allegiance means very little today as customers can skate out of early termination fees and have their phones paid off in the process. And, now that it’s harder to draw a distinction between post-paid and prepaid companies, it’s easier than ever to consider a switch.

MetroPCS, which is a prepaid service under T-Mobile, is offering Sprint subscribers a chance to save money on single line and family plans. It’s not just the tier-one brand either; Virgin Mobile and Boost Mobile users can get in on the deal, too. Dubbed “The Biggest Offer in Sprint’s History“, it’s a rare scenario that finds a prepaid company targeting a traditionally post-paid competitor.

Starting from January 21, existing Sprint, Virgin, and Boost customers who switch to MetroPCS can save up to 50 percent off of Sprint’s Family Share Pack pricing. Actual discounts will vary based on location and number of lines, of course, but T-Mobile promises at least 22 percent for a single line.

Additionally, Sprint customers who port their number to MetroPCS can get one of four phones free after rebate: LG Leon LTE, Samsung Core Prime, Kyocera Hydro LG Wave, LG K7. Alternatively, defectors can opt for a $50 credit toward any other models.

Existing MetroPCS users can also take advantage of a separate deal, too. Those currently on a $50 or $60 MetroPCS rate plan can add a second line of service with 5GB of data for $30 per month.

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