Question: are us cellular phones carrier unlocked?
Answer: Even if your Boost phone is unlocked, you might not be able to take it to another carrier. ... U.S. Cellular: 3G phones can be unlocked by calling 888-944-9400; 4G LTE models may already be unlocked or need to be unlocked at a U.S. Cellular store. (U.S. Cellular's unlocking policy.)