We should also consider that maybe the smart phone trend thing is starting to slow down. Since most of the possibles innovations are already done it's harder to think of new features except maybe more power.
Not nearly. There is so much to be explored, even with current technologies like NFC, Bluetooth LE, OLED, pico-projectors, sensors, mesh networking, that current phones will look ancient in 5 years.
We should also consider that maybe the smart phone trend thing is starting to slow down. Since most of the possibles innovations are already done it's harder to think of new features except maybe more power.