Schematic archive labelled P40, 1.09 MB zip, with no brand stated in the listing. P40 is a common model name used by several makers, so open the archive and confirm which device and board revision the drawings cover before using them. Once matched, phone schematics serve to trace power rails from the PMIC, follow charging and USB lines, and locate components around display and camera connectors when checking a short. Match the PCB markings with the title block before trusting any value.
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 @esquematicosparatodos. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.