I bought this phone from AT&T about 5 months ago, I wanted something with a qwerty keypad for easy texting and email, and IM use. I love this phone, it is reliable. It's not really much to look at, and they keys are pretty small but over the months I have grown accustomed to it. It is handy for checking email, texting and IM use. Though it is not very comfortable in your hand or to your ear, I have found the blue tooth ear peice to be a godsend. It comes with an extended life battery and an additional regular batter, two backs to interchange with the batteries but I found one works just fine with both battery packs. I would encourage you to purchase a blue tooth earpiece to go with the black jack because like I mentioned it is not a comfortable phone to hold or on your ear. One other thing I don't really care for is the limited options for a case to carry it in. The best I found was one you literally have to take the phone out to answer or use it. All in all I DO like this phone ALOT but with all things there is usually a few glitches that you don't really care for.
Here is some of the features:
With the BlackJack customers can get rich entertainment features, powerful business applications and the familiar look and feel of Windows Mobile® 5.0, turbo-charged by Cingular's 3G-enabled BroadbandConnect service in an ultra sleek design.
. This ultra-thin 3G device features a fully integrated QWERTY keyboard with a large high-resolution QVGA color screen.
Built to satisfy everyone from the music fan to the business user, BlackJack includes a bevy of cutting edge features:
MP3 player and access to AT&T Music, the most comprehensive music subscription service of its kind ever offered by a U.S. wireless carrier, including access to online subscription music content from eMusic, Napster and Yahoo!
AT&T Video - AT&T on-demand streaming video service featuring exclusive content such as HBO
High speed Internet browsing over Internet Explorer® Mobile optimized for AT&T 3G and EDGE networks
1.3 mega pixel digital camera with video capture capabilities
Stereo Bluetooth® version 2.0 with stereo headset support
QWERTY keyboard for fast email and texting