3.2 Schematic Diagram | Nokia
This is usually the first page. It provides a "bird's eye view" of the phone. It shows the major subsystems: the Qualcomm SDM429 processor (CPU), the Power Management IC (PMIC), the memory blocks, the display interface, and the RF (Radio Frequency) section.
Bridges the battery connector to the processor and peripheral sub-circuits. nokia 3.2 schematic diagram
For professional repair, the Nokia 3.2 Service Manual provides specific instructions for Levels 1 and 2 technicians. This is usually the first page