Cause of fever:
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1, since the vivo mobile phone opens the dual engine flash charge, the flash charge current is larger, the charging process will be part of the battery inside the electricity into heat, so a slight heat is normal, in addition to the external environment temperature will also affect the heat of the mobile phone.
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2.? When the charger is converted to voltage and current, there is energy loss, and the dissipated energy will cause the charger to heat, and the greater the charging current, the greater the corresponding heat.