Of course, it can not be used, but the protocol is not supported, there will be no fast charging, the highest charging speed is expected to be around 10W
Apple's fast charge protocol is PD protocol, Huawei's charger does not support PD protocol, can not provide 20W charging speed, usually can only provide 10W charging power; Hope to help you thank you!
No, Apple mobile phone maximum support 20w so much food phone line will heat up.