(1) A cellphone that works with only one cellular carrier. In the U.S., cellphones and smartphones purchased from the carrier are generally locked to prevent subscribers from easily switching to ...
A complete list of US carrier 5G bands, 4G LTE, and 3G for Verizon, AT&T, T-Mobile, and US Cellular. 5G mmW, low-band, ...
When the FCC proposed the 60-day unlocking rule in July 2024, the agency criticized T-Mobile for locking prepaid phones for a year. The NPRM pointed out that "T-Mobile recently increased its locking ...