The problem isn’t with the iPhone 11 but because Apple ships it with a weak charger. Apple has included the ability to fast charge your phone starting with the iPhone 8. There are no special settings to enable; you just need the right charger and cable.
Fast Charge iPhone 11
Presumably, to lower the cost, the iPhone 11 only comes with a weak 5W charger and Lightning-to-USB cable in the box. However, Apple does bundle an 18W USB-C fast charger and supporting USB-C to Lightning cable with the iPhone 11 Pro or Pro Max models. The included charging setup is fine for letting the iPhone 11 charge overnight. But if you need a quick shot of juice to get your phone through the rest of the day, you’ll want the fast charging capability.
Get Your Charger and Cable
Now, when it comes to fast charging your iPhone 11, you need the proper accessories. It would be best if you got an 18W USB-C Fast Charger and a USB-C to Lightning cable.
The main reason for buying the official Apple charger and cable is peace of mind. And if you just got your iPhone 11, the extra fifty dollars might be worth it. If you have an older gen iPhone and haven’t tried fast charging or need a replacement charging rig, you can save a few bucks by going third-party.
