Sprint is offering to pay all the early termination fees and remaining smartphone installment plan payments for customers switching to the carrier. Extending the previous offer where it provided up to $350 towards the cost of the early termination fee, the new offer does not have an upper limit, but does require customers to port their number, buy a new smartphone at full retail or under its payment plans, submit their current devices for return, and provide Sprint with a bill showing the refundable charges within 60 days of activation.
