Where We're Headed: Yes, touch screens will continue to be important to smartphones. But thanks to more powerful processors and sensors, in five years, perhaps we'll see more mature and intuitive versions of the largely gimmicky Smart Scroll Samsung built into the Galaxy S4 and the "gaze detection" control Apple is eyeing (pardon the pun). But more likely to appear are more mature and intuitive voice controls, and those that can handle all device commands, such as music playback, answer call, ringer on/off and app booting, as well as information requests.
Prediction: Instead of intoning "Galaxy, call mom," you'll imbue your phone with a distinct developing robotic personality and name, and it will only answer to you or other designated voices. More powerful processors will enable you to converse with your handset and turn your phone into a universal translator.