Samsung Galaxy S3 I9300 Schematic Diagram May 2026

Focuses on the MAX77693 and MAX77686

and the first-of-its-kind for a Samsung flagship. Professional Repair Utility

PMICs (Power Management Integrated Circuits), which regulate voltage across the motherboard. Maps the Wolfson Microelectronics audio hub

For technicians, these diagrams are essential for diagnosing common hardware failures:

The schematic is typically divided into sheets that categorize specific functions:

The is a foundational document for engineers and repair professionals, detailing the intricate electrical architecture of one of Samsung's most historically significant flagship devices. Often referred to under its internal codename "MIDAS," the schematic reveals a multi-sheet layout that maps the phone's quad-core processing power, specialized radio frequency (RF) paths, and complex power management systems. Core System Architecture