Touchscreen schematic for the Samsung SM-A22 5G, supplied as a 5.26 MB PDF. It shows the touch connector pinout, power supply for the touch controller, the communication bus and interrupt lines to the processor. Technicians use it when touch is unresponsive, partially dead or registers ghost input, checking rails at the connector and continuity of the control lines. The 4G Galaxy A22 is a different board, so make sure the phone is the 5G model before relying on these 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 @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.