Component name reference sheet for the Samsung SM-A23, packaged as a 2.78 MB PDF within the per-function schematic set. Judging by the title, it identifies the main parts on the board and their designators, which helps orient yourself before using the more specific sheets. It speeds up locating ICs, connectors and passives when cross-referencing a fault from another diagram. Open it in any PDF viewer and confirm the PCB variant of the phone matches the documented SM-A23 layout before relying on names.
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.