Troubleshooting of mobile phone

The experience is immature. Here are some experiences of troubleshooting mobile phones for your reference.

Line problem

It's no problem to close the line. I don't know what brand you have Generally, this problem occurs in parallel planes. Is it slow to boot into the SMS function? If so, there is no way to solve it, even if the reception is normal. There is something wrong with the processing chip, which runs too slowly and has low performance, and there is no solution.

Problems of transmitting power amplifier tube

There is something wrong with the transmitting power amplifier tube, and the situation is good and bad. On the one hand, its quality is not good, on the other hand, you may often be in places with weak signals, such as basements. When the signal is weak, the machine will increase the current and constantly search for the signal, which is easy to burn out the launch tube. This fault can be detected, replaced and repaired.

The battery power supply is unstable.

The battery power supply is unstable, and the rectifier element of the battery board circuit is faulty. It is recommended to try a different battery.