At Mobile World Conference in Barcelona this week, struggling smartphone maker BlackBerry (NYSE:BB) announced a pair of BlackBerry 10 devices. The two new mid-range phones, named the Q20 and the Z3, are very different from a style perspective. The Q20 is a QWERTY model that brings back the trackpad and some physical buttons, while the Z3 will be the all-touchscreen follow up to the Z10, which performed rather poorly with consumers.

In this segment from Tuesday's Tech Teardown, Motley Fool tech and telecom bureau chief Evan Niu talks with host Erin Kennedy about BlackBerry and its struggles with demand for its BB 10 devices. He also takes a look at the company's turnaround efforts, and what he considers the best part of BlackBerry's turnaround story at the moment.