Yesterday, Motorola officially unveiled the Charm, its next Android phone for T-Mobile, and quite possibly the most unique Android device yet. Unlike typical touchscreen smartphones these days, the Charm features a small 2.8-inch display on top of a full hardware keyboard. Basically, it looks like a Blackberry.

It’s the first mainstream Android phone to launch with the portrait format, and it’s also the first to run Android 2.1 alongside Motorola’s Blur software, reports Engadget. It’s also running an older version of Blur, and not the updated version included with the recently released Droid X.

Spec-wise, the Charm isn’t built to impress. It sports a 3-megapixel camera (with Kodak branding), and I don’t suspect that it will be much of a powerhouse when it comes to processor speed. It’s biggest strength is clearly its form factor, which may entice Blackberry and Treo users who can’t live without their physical keyboards. It also includes a touchpad on the back of the phone (Moto calls it the “Backtrack”) for an unobstructed view of the screen while navigating, and a second microphone for noise canceling purposes.

It’s certainly not the sexiest phone coming out in the next few months (all we know is that it’s coming “this summer”), but its unique form factor is representative of Android’s incredible flexibility. Pricing details haven’t been announced, but judging from the camera, I expect it to retail somewhere under $150.

Don’t miss MobileBeat 2010, VentureBeat’s conference on the future of mobile. The theme: “The year of the superphone and who will profit.” Now expanded to two days, MobileBeat 2010 will take place on July 12-13 at The Palace Hotel in San Francisco. Register now. Tickets are going quickly. For complete conference details, or to apply for the MobileBeat Startup Competition, click here.