The time that Apple phone x supports fast charge is as follows
Several generations of Apple support 20w fast charge, the first time was introduced in 2017 iPhone 8 and iPhoneX this generation of mobile phones, it can support 20W pd fast charge, but this mobile phone including later until the iPhone11 mobile phone equipped with a charging head are ancestral 5 volt 1 amp charging head, the original does not support fast charge.