So, if your Infinix Smart 6 Plus keeps charging slowly even changing chargers, then there are reasons for a slow charge and here are the sufferings and solutions.
Check Your Charger & Cable
Use the original charger that is packaged with the Infinix device (5V/2A or more).
Use another USB cable (some budget cables don’t enable fast charging).
If you can, try your charger and cable with another phone to see if they work correctly.
Clean the Charging Port
They can hinder the proper projection of charging.
Use a toothpick or