Samsung SM-A10 SIM card schematic in a 2.25 MB PDF. It lays out the SIM socket signals, clock, reset, data and supply lines plus the protection parts placed between the tray and the processor. Use it to diagnose no-SIM or SIM-not-detected faults, checking continuity and looking for shorted protection components. Open it in any PDF reader and zoom in for detail. Before relying on it, confirm the phone is really the SM-A10 model, since other Samsung boards route the SIM differently.
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.