Sprint today launched an aggressive promotion aimed directly at T-Mobile. Sprint is promising $200 to T-Mobile customers who port their number to Sprint and turn in their working T-Mobile phone. The $200 trade-in offer, which runs from today through April 9, can be combined with Sprint's ETF buyout. In addition to the $200, Sprint will pay up to $350 per line to cover ETFs and other fees when customers cancel their T-Mobile service. With the two promotions combined, T-Mobile customers stand to receive up to $550 if they switch to Sprint, which should cover any costs associated with terminating their old service and acquiring a new handset.


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