Schematic in a 2.33 MB ZIP for a Samsung device; the name gives only A226B, which matches Samsung model numbering, but no further detail is stated. Phone schematics of this kind help trace charging and power management circuits, locate the PMIC outputs, follow display and camera connector lines, and check for shorts on main rails. Open the extracted file with the appropriate viewer, typically a PDF reader. Confirm the device model and board revision on the unit match before relying on component 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 .zip file
Compressed archive that every operating system opens without extra software.