The vision for the iPhone of the future, the next major iteration beyond iPhone 8/X, and the ultimate goal for Apple in my mind: to get rid of all the physical buttons, bezels, and ports. Here's the case for each: Physical buttons: The lock button is already made partly redundant by the raise to wake feature in iOS 10. Apple would just need to figure out a seamless way to turn the display off. Volume buttons could be made touch-sensitive or completely controlled by the display/Siri. Bezels: They take up unnecessary space, and with the 4.7"/5.5" size of the displays a reduction in size would make use that much more comfortable. Ports: Once the iPhone has wireless charging, there is zero reason to keep the Lightning port. The transition away from the headphone jack is really a transition to a wireless future, and everybody should be prepared for that transition beyond just using adapters and Lightning headphones. The iPhone of the future will look completely unlike the iPhone of today, losing all the iconic design cues like the home button. It will lead to the ultimate goal of being just a window into content, and this end-goal product will be the most innovative to come out of Apple in years.