Joining its sibling the HTC Salsa, the HTC Cha Cha's main aim is to get you on FaceBook. With a dedicated Facebook button, it's one for the die-hard social networkers and those who love a good old QWERTY keyboard. It’s even one of the lucky phones to be given the thumbs-up by Mark Zuckerberg himself. But can it do the Facebook? We get social to find out.