Schematic for the Apple iPhone 7 Plus, shared as a PDF of about 10 MB and credited to a Vietnamese repair source. The name lists no logic board revision or modem variant, so compare details with the board in hand. A technician uses these drawings to trace power rails from the PMU, follow lines between the stacked logic boards, check audio, baseband and charging circuits, and locate shorts. Pair it with a boardview for component placement and confirm the board version before trusting values.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @esquemaseletricos. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.