Samsung Galaxy A30 schematic for the SM-A305N variant, supplied as a 3.49 MB PDF. Expect circuit pages for the PMIC and charging, battery and USB connectors, display, camera and audio sections, plus net names useful for following rails. Use it to work out which supply is missing on a dead phone, trace signals to connectors and find capacitors near a short. The N suffix marks a regional variant, so other A30 models such as SM-A305F may differ; confirm the model on the device before relying on part references.
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 .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.