1. Reason analysis:
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1. The battery is damaged. 2. The system is faulty. 3, charger reasons or poor contact.
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Ii. Solutions:
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1, change another charger, or data cable to try, or clean the charging port.
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2, boot into the recover mode to select advancsd advanced mode, select wipe Battery, clean battery traces.
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3. Restore factory Settings to see if it is a system reason.
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4, If the battery is damaged, can only be sent to repair and replace the battery.