Charging is slow because the charger and data cable are not connected properly or the interface is not clean.
1. If the charger, data cable, or charging interface of the mobile phone is not properly connected during charging, the charging may be slow, fail to be charged, or even be short-circuited. Plug and unplug the charger several times to ensure good contact with the mobile phone.
2. Verify that the connectors and jacks are clean. If there is dust, wipe them with alcohol or clean them with a brush. If the battery is cleaned with alcohol, you need to recharge the battery after the alcohol is dried.
3. For a mobile phone that supports quick charge, if the data cable of the charger is not connected properly, the mobile phone may fail to enter quick charge status.
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