In this edition of her advice column, CNET's Marguerite Reardon explains the differences between locked and unlocked phones and helps a reader figure out how to get an unlocked device. She also ... Unlocked phones give you the freedom to choose the model and carrier you want, without locking yourself into a long-term contract.

Understanding the Context

You can own and use multiple phones, and you can also take advantage of lower rates from virtual operators piggybacking on the major carriers.