Microsoft Kin
2010–2010
This extremely short-lived mobile phone was an attempt to make a cool phone for teenagers and other social media addicts. The slide-out keyboard and design were supposed to make it easier to use services like Facebook and Twitter. Microsoft Kin, however, was far from cool, it lacked apps and games, and its monthly fees were as high as for the iPhone and Android. Nobody bought it and, the Kin was killed less than 4 months after launch.
Additional info:
Wired - Why the Kin failed
Engadget - Life and death of Microsoft Kin: the inside story