It is normal for vivo phones and chargers to heat up slightly while charging.
1, mobile phone energy conversion and internal resistance consumption will produce a certain amount of heat;
2, some models are equipped with flash charging function, we improve the power output of the charger and shorten the charging time at the same time, may bring a certain degree of charging heat.
However, please rest assured that vivo mobile phones have passed strict safety tests before leaving the factory, and there will be no security hidden