[cocoabro]

I've experienced it both ways. If I call sprint, or go to one of their stores, they direct you to Asurion. However, I've had my phone replaced (under the insurance plan, not warranty) at Wireless Giant and they ordered the phone (presumably through Asurion) and then exchanged it when it came in.

Good news is, my TP's keyboard is on its out, so maybe a TP2 is in my near future.