PDF schematic covering the SM7225 processor, 1.52 MB, with no handset model or revision mentioned. Open it in a PDF reader to search net names and pin functions. It helps technicians locate CPU supply rails, trace PMIC enable and reset signals, and check memory and display interfaces when a phone is dead or stuck at boot. Since the source board is unknown, confirm the drawing matches your device layout before relying on component values or test point locations.
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 @mischematic. 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.
Any PDF readerSumatraPDFFirefox / ChromeFlexBV (links PDF to boardview)