With BlackBerry (NYSE:BB) set to release earnings at the end of the week, investors will be paying careful attention to sales figures and other critical metrics. This will be the first earnings report since the release of the Q10 smartphone, and only the second since the BB10 OS went live on the Z10. Analysts have wildly different opinions about the future of the company, with some upgrading and some downgrading shares heading into the announcement.

In the video below, Fool.com contributor Doug Ehrman discusses how important Friday will be for BlackBerry, and what you should be looking for when the numbers are released.

Fool contributor Doug Ehrman has no position in any stocks mentioned. The Motley Fool recommends Apple. The Motley Fool owns shares of Apple. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.