Mostly, I agree with your post. Related: I find browsing the web on an older phone is awful. A great example: Google Maps is one of the most intensive web apps that I use. After each phone upgrade (~3years), it a huge leap forward in performance. I assume this can be explained by improved WiFi, CPU clock/cores/cache, and main memory. What is your guess about which part of the upgrade is most impactful? (Let's assume the version of Chrome is roughly equivalent between new and old phone.) My guess: It is mostly due to improved CPU (clock/cores/cache).