She had bought it for forty bucks from a guy on Craigslist. The listing said "for parts." Maya knew better. It was carrier-locked to TelMex, a defunct Mexican carrier that had gone bankrupt three years ago. To any normal person, the phone was e-waste. To her, it was a puzzle.

: Some "unlock tools" may contain malicious code or attempt to steal data. Always review the source code or use tools from reputable contributors like those found in the Android Hacking repository .