Charging slows down for the following reasons:
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First, the reason for the charger, the charger internal original caused by aging
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Second, the mobile phone battery aging heating serious lead to slow charging
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Third, the mobile phone charging port may be in contact with the problem
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Fourth, system reasons, after the system update, the charging is slower than in the past
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Five, charging background running software too much current consumption resulting in slow charging
It is possible that the temperature of the phone increases during charging, so it slows down.
There is also a case that the battery has failed, which needs to be tested or replaced after sale.
Fast charge line suddenly slow charge reasons:
It is possible to change the charging plug, the charging will be slow, and the device should be charged with the right charging plug.
The charging temperature is too high, causing the charging speed to decrease.
The data cable interface can not be fully plugged into the phone, so fast charging may enter the ordinary charging mode, resulting in slow charging.