In the following video, Motley Fool tech and telecom analyst Andrew Tonner tells investors what has shares of BlackBerry (NASDAQ:BBRY) up more than 10% today. AT&T has announced that it will be selling BlackBerry's Z10 handset as soon as March 22, while Verizon says it will also be selling the handset before the end of March. Is this the continuation of a successful turnaround story? Andrew tells us that while this is definitely good news, the company still has a long, hard road ahead.

Andrew Tonner owns shares of Apple. The Motley Fool recommends and owns shares of Apple and Google. It also owns shares of Microsoft. 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.