For those looking at technical schematics for repairs, resources like iFixit and Basic Apple Guy provide high-resolution internal "X-ray" style wallpapers and repair manuals showing the placement of the A15 Bionic chip and Taptic Engine.
Apple’s official support article provides an annotated diagram of iPhone 13 buttons.
Since we cannot display a live image in this text format, imagine your iPhone 13 placed screen-side up on a table. Below is a text-based diagram mapping every physical component. For the best understanding, hold your iPhone 13 in landscape mode (home button side on the right).
