Charging and data circuit for the Samsung Galaxy A12 (SM-A12) in a 3.39 MB PDF schematic section. It covers the USB connector, the charger IC, over-voltage protection and the USB data lines, the main reference for a phone that will not charge, charges slowly or is not recognised by a computer. Measuring VBUS through the protection stage and checking the connector pins for shorts usually locates the fault. The name lists no model suffix or board revision, so verify these before trusting designators. Any PDF viewer opens it.
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 @phoneSchematics. 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.