Generally speaking, under normal circumstances, millet gallium nitride 33w is not harmful to Apple. Under normal circumstances, the millet gallium nitride charger 33 watt fast charger charging Apple mobile phone is no harm, millet 33 watt gallium nitride fast charger is able to support USB PD fast charging protocol charger, while downward compatible with the 5 volt voltage output of the ordinary charger, so whether the Apple phone supports the fast charging protocol can be charged normally.