What was once known as the BlackBerry "Mercury" is now the KEYone. (Yeah, I don't like the name either.) At a press conference in Barcelona, TCL -- the new steward of BlackBerry's hardware efforts -- introduced, or rather re-introduced, its first Android handset with a QWERTY keyboard. It's a tall, enterprise-friendly smartphone with BlackBerry's DTEK software dumped on top of the OS. You can expect a fairly clean version of Android, but with the BlackBerry Hub and a few other apps aimed at business types. Clearly, this is a niche device: Unlike the DTEK50 and DTEK60, which ditched the physical keyboard, this is a phone for the BlackBerry purists.