Xiaomi mobile phone charging a few seconds on the power off may be caused by the following reasons:
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1. ** Charger problem ** : Need to check whether the charger is working properly. If the charger is damaged or incompatible with the phone, it may lead to unstable charging. It is recommended to try to use another charger to charge to see if it can solve the problem.
2. ** Data cable problems ** : Poor contact inside the data cable may also lead to charging interruption. Check whether the data cable has obvious physical damage, such as broken, wear, etc. If there is damage, it is recommended to replace a data cable to try.
3. ** Mobile phone charging port loose ** : If the mobile phone charging port is loose or the internal contact is poor, there will be intermittent charging. You can try to gently shake the data cable to see if there is a feeling of loosening, if so, you may need to clean the charging port or go to the professional maintenance point for inspection.
4. ** System software problems ** : Sometimes, bugs in the mobile phone system may also lead to abnormal charging. You can try to restart the phone, if the problem persists, you can consider backing up the data and try to restore factory Settings or update the system version.
5. ** Hardware failure ** : If the above methods can not solve the problem, then it may be the hardware inside the phone has failed, such as the battery, power management chip, etc. In this case, it is recommended to contact Xiaomi's official customer service or go to Xiaomi's authorized maintenance point for professional testing and maintenance.