Mobile phone maintenance belongs to the maintenance industry, and there is nothing to learn in ordinary colleges and universities. Only those training technical schools need to learn, or go to the store to find a special maintenance master to learn.

Understand the commonly used names, concepts, graphics and text symbols, unit system, etc. Electronic technology in mobile phones. At first, you must know the commonly used names and concepts, such as what is current, voltage, resistance, DC, alternating current, etc. These are the minimum knowledge of junior high school physics.

For some confusing names, such as voltage, voltage drop, potential, potential difference, electromotive force, etc. , not only to understand their differences, but also to know their text symbols, units and conversion. Learn the knowledge of mobile phone components. Including identifying various components and devices in mobile phones, learning and understanding the principles of various components and devices, and mastering the measurement methods of components.

Extended data:

Maintenance precautions:

Integrated chips of different manufacturers and models are embedded in the printed circuit board inside the mobile phone, and there are some new components on the printed circuit board. These chips and components all transmit some weak current signals, so don't carry out maintenance operation under strong magnetic field and high voltage, so as to avoid damaging these components by large current impact.

When maintaining a mobile phone, we should first connect the measuring instrument correctly according to the operating rules of maintenance, then turn on the measuring instrument and set it correctly to determine what kind of fault the mobile phone belongs to and the possible fault range at the initial frequency.

Because the mobile phone is a kind of microelectronic product with integrated circuits, its internal integrated circuit structure is very precise, and it is developed with advanced technology, so these maintenance personnel must know the performance of every chip and component in the mobile phone circuit board like the back of their hands before repairing the mobile phone.