Repairing mobile phones is easy to learn, and the basic circuit principles are the same. If you learn simple repairs, half a year should be enough, but it also depends on your personal learning ability. If it is a deeper circuit analysis and repair, it may take a long time, usually one year. Simply put, mobile phone maintenance is divided into hardware and software. Hardware needs technology and good instrument operation level, such as soldering iron, BGA extractor, hot air gun and so on. If it is software, you need to know the characteristics of each CPU chip and the corresponding burning methods (online and offline).

The basic contents of repairing mobile phones: some software problems such as cell phone jailbreaking, unlocking, obtaining permissions, etc., can be learned as long as 15 days.

Understand the circuit diagram and general disassembly, this level only needs 1 month.

It takes about 2 months to understand the circuit diagram and simply repair the mobile phone.

It takes three months to understand the circuit diagram and reach the level of a skilled master.

More advanced, to become a top mobile phone maintenance engineer, we must rely on our own efforts and learn endlessly.