PDF schematic for the Samsung I8160, the Galaxy Ace 2, identified only by model number in the file name. Board-level documents like this help with tracing voltage rails, checking charging circuits, locating the display and camera connectors and finding parts linked to a short to ground. Any PDF reader opens it, and searching for designators lets you jump between the diagram and part references. Make sure the handset's model label reads I8160, since other versions use different boards and the diagrams would not apply.
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 @Schematic_mobile_iran. 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.