While Verizon and AT&T are dueling out for the title of largest telecom operator in the US by subscriber count, Sprint and T-Mobile are currently engaged in a gloves-off battle for the third position. Unwilling to let T-Mobile claim a firm grip of the podium spot through its latest iPhone trade-in promotion, Sprint has recently announced a similar deal, basically offering a free upgrade from the iPhone 6 to the iPhone 6s.
T-Mobile lets you have the 16GB iPhone 6s for as little as $5 per month through its Jump! On Demand lease program if you trade in an iPhone 6. Sprint’s new promotional …
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