Introduction to mobile phone motherboard

The main board uses insulating material as the base material, cuts into a certain size plate (copper foil on the insulating plate) according to the requirements, and makes holes (such as component holes, fastening holes, metallized holes, etc.) according to the wiring requirements to realize the interconnection between electronic components. This kind of board is made by electronic printing technology, so it is called "printed" circuit board.
Introduction to mobile phone motherboard
The motherboard is an important part of the mobile phone and is made of multilayer insulating board. It is used to support various components and can realize electrical connection or insulation between them. The main board of the mobile phone is composed of PCB, resistor, capacitor, inductor, diode, triode, field effect transistor, interface device, sensor, integrated circuit and other components, which is used to realize the processing of internal and external signals and control of all functions of the mobile phone, including display, charging, switch on and off, function application, etc.
In mobile phones, the motherboard is connected through multiple interface cables and various functional components, such as power switch cable, screen cable, front camera, main camera, headset/earphone cable, touch cable, bottom button cable, etc.
In mobile phones, integrated circuits play a leading role. Each integrated circuit has different functions. Understanding and understanding the function and external circuit structure of each chip is the only way to master and learn the circuit principle and fault repair of smart phones.