To enable fast charge on the iPhone X, you'll need a charger and charging cable that supports fast charge.
First, make sure the chargers and charging cables you use are original or certified fast charge devices.
Then, plug the charging cable into the iPhone X's charging port and plug the other end into the fast charger.
Next, plug the fast charger into an electrical outlet. The iPhone X will automatically recognize the fast charging device and start fast charging. During the charging process, you can view the charging speed on the lock screen or in the Settings. Please note that the fast charge function may vary due to factors such as battery health, ambient temperature, etc.
Do not have to deliberately open, as long as the original charger can be used for fast charging.