1. First of all, the system of the phone is faulty, so the battery level display is faulty. 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.
2. The charger is faulty. This failure is the main reason why mobile phones cannot be charged. So how to judge the charger is good or bad. It's actually very simple, try another charger. If it can be charged, it can be concluded that the charger is faulty. Faced with this kind of problem, there is no way to buy another charger.
3. The charger is in poor contact with the mobile phone. It is also very common that the charger is not plugged in properly due to careless phone users. The solution is simple: change the jack back and forth.
4. Cell phone battery problems. In general, it's rare to have a problem with your phone's battery. 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.
5. The phone itself has 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.