Schematic diagram in PDF form for the Huawei G300 smartphone, 3.04 MB in size. The file name carries no board number or revision, so compare the document against the actual PCB before trusting component designators. A phone schematic like this helps trace power rails from the PMIC, follow charging and USB lines, and find the parts feeding the display, speaker or SIM circuits when diagnosing dead or partially working handsets. Any standard PDF reader opens it, and the search function is useful for locating net names and part references quickly.
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 @mobileshematic. 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.