Schematic diagram for the Huawei G520-0000, a compact 598 KB PDF whose Chinese title means schematic or circuit diagram. Labels inside are probably partly in Chinese, which is common for Huawei internal drawings, but net names and part references remain readable. The schematic is used to trace power rails, follow charging and USB lines and identify components around a shorted circuit. Open it in any PDF viewer and confirm that the board marking on the phone matches the G520-0000 variant first.
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 @tamirat_moobile. 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.