As far as I know, iqooneo855 is a mobile phone model. To determine if you can use a 20 watt fast charge, you need to consider two factors:
First, whether the phone supports the fast charge function;
Second, whether the charger can provide 20 watts of output power. If the iqooneo855 phone supports the fast charge function, and the charger used is able to provide 20 watts of power output, you can use 20 watts of fast charge. It is recommended to check the phone manual or consult the relevant manufacturer for accurate information.
iqooneo855 is a smartphone launched by vivo, which supports 100W flash charge. As a result, the iqooneo855 can be charged quickly with a 20 watt fast charge.
Yes, the phone has a self-charging protection function