The smartphone maker collaborated with Facebook in the design of two models, the HTC Salsa and HTC Chacha, which were launched at the mobile phone industry's annual get-together in Barcelona.
With just one touch, users can immediately share what they have written or photographed on the social network.
GPS also allows them to show their friends their location and localise information posted.
Facebook is also tightly integrated with many of the smarthphones' other applications, such as the calendar linked with Facebook events.
The company put efforts to increase the functionality of the screen and navigational ease in its HTC f(l)yer, a 7-inch (16.8 centimetres) tablet running on the Android operating system developed by Google.
With the aid of a stylet, users can take notes and even sign PDF documents.
Improved voice recognition allows users to dictate notes as well.
The company also presented at the Mobile World Congress three updated versions of its smartphones -- the HTC Wildfire S, HTC Desire S et HTC Incredible S. -physorg.com