New mobile phone devices come along once every 6-8 years or so. Starting around 1990, the first generation of cellular phones relied on small book sized mobile phones. In 1997, smaller sizes with bigger antennas were introduced for better connectivity. By 2005, those black military equipment looking mobile phones were replaced by swanky colorful and inbuilt camera phones. Around 2011, fight in mobile market was not of size any more but of camera resolution and music quality. Today in 2015 it's more about design, brand, sound, camera, applications, features. What to expect by 2020? Well, we just can't predict anymore, clearly what we have today must have never been expected 20 years back. We are moving fast in this technology driven industry.