Sprint's computers automatically provide a 20 percent discount for whatever number a Sprint customer calls the most.

I'm a Sprint customer with a Pre now.

By contrast, only 13.6 percent of MCI customers and no Sprint customers cite "no reason" for choosing their carrier.

I say this as a Sprint customer who loves the voice quality but whose contract is up in mid 2012 expecting to have to jump to Verizon.

It happens more than 8 million times per year to Sprint customers alone.

But the Photon is at best a good option for a dedicated Sprint customer, and we don't see it drawing much new blood to the network.

Remember that no Sprint customers are committed to continue taking the service.

The customer, however, technically remains a Sprint customer.

As a Sprint customer, all I can say is, I WANT.

The SPH-D710 is available to Sprint customers in black, titanium grey or white.