Wireless local number portability: Guidelines for switching carriers
I’ve been paying $5/mo for the past year to retain my old SprintPCS number with call forwarding to my T-Mobile line. For a while, this was quite useful, and I had a couple months to make sure that anyone I talked to regularly had my new number. I’ve realized, however, that nowadays, no one uses my old number at all.
I really should have just waited a couple days and gotten a new activation with my T-Mobile number (and gotten an activation discount), but it looks like at the very least, from an email exchange with Sprint Customer Service, I should be able to port the number over without too many shenanigans.