Topic 4 of a Spanish mobile repair course, explaining how to identify the parts of a smartphone, as a 404 KB PDF identical in size to the unnumbered copy. No brand or model appears in the name. It serves beginners learning to recognise the main board, battery, display assembly, flex cables, cameras, speakers and connectors inside a handset. The document is introductory training material rather than a circuit diagram, and it can be read in any standard PDF viewer before moving on to disassembly topics.
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 @canalesquematicos. 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.