Schematic in PDF for the Samsung i8200, named only by its model number with no further details given. A circuit diagram of this kind supports board repair by showing how power flows from the battery and PMIC to each block, which components sit on each rail, and where signals run between processor, memory and peripherals. Open it in a standard PDF viewer and search for reference designators. Before measuring, confirm the model code on the device label, as close variants may use different components.
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.