If you are looking at a Sprint-branded device today, here is what its journey looks like: 1. The Migration
: Older Sprint phones used CDMA technology, which T-Mobile (a GSM carrier) has officially shut down.
: Because of the "Sprint" branding, these phones often have lower resale value than unlocked or T-Mobile versions, making them a "steal" for tech-savvy buyers who know how to unlock them.
: People buying used or refurbished legacy Sprint devices on secondary markets like eBay or Swappa because they are often cheaper than T-Mobile-branded equivalents.
: Many are rebranded or refurbished for use on Boost Mobile or Tello, which still utilize parts of the old infrastructure or wholesale agreements.
: Former Sprint customers who kept their original devices; these phones were "bought" by T-Mobile as part of the subscriber base acquisition.
: Most Sprint devices made in the last few years are compatible with T-Mobile’s network.