the 1st iphone utilized a 32bit ARM processor at 412MHz the iPhone 7 utilizes quad-core 2.34 GHz (or 2340MHz) 64bit SOC (system on a chip) in the span of 10 years , iphone did what took PC chip manufacturers over three decades to do,
which was to go from single-chip processing to quad-core 64bit processing.
What will the next decade be like? It's all so exciting.
__________________________________ =) If my input helpful, a Kudos would be super great. If I solved your problem, make sure to mark my post as the solution (plz&ty)