First of all, it may be the fault of the mobile phone system, the power display is not correct, there is a problem. This problem is the easiest to solve, you can directly shut down and restart, which is equivalent to data refresh, and the general power display will return to normal.
Second, the charger malfunctions. This failure is the main reason why mobile phones cannot be charged. Try another charger. If it can be charged, it can be concluded that the charger is faulty. Encounter this kind of problem, there is no way, can only buy another machine treasure card a charger.
The phones themselves have quality problems. If you buy a cottage phone, then the probability of the phone failure is very high. If it is a brand machine, it needs to be returned to the original factory.
Cell phone battery problem. In general, mobile phone battery problems are very rare. But once there is a problem, it is a big problem and must be paid attention to. Therefore, when it is found that the charger and the mobile phone system are not faulty, the battery should be checked. If the battery is found to be swollen, then it means that there is a problem with the battery, and it must be stopped immediately. Do not disassemble the battery. Because the swollen battery is easy to cause explosion, bringing serious consequences.