As stated above, for the 12 pro it appears the taptic engine is bigger than the unit in the 11 pro.
Also one of the first things I noticeded on my 12 pro was the speakers, they seem tinnier and not as loud. I have to test them next to my 11 pro before I sell the 11.
It appears the iphone 12 pro's taptic engine is actually bigger than the unit on the 11 pro, but smaller than the unit on the standard 11? (According to this: https://youtu.be/ZYyW6X3u6DI at 5:08?)
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