Turn On Airplane Mode
Another thing you can do to help your iPhone charge faster is to turn Airplane Mode on. This will disable your iPhone’s cellular connectivity, and it’ll be easier for your iPhone to charge.
Believe it or not, cellular connectivity takes a lot of power out of your iPhone since it’s constantly searching for the best cell tower to use.
You can turn on this feature by swiping down from the top right side of your iPhone to go to Control Center. Then tap the airplane icon to turn on Airplane mode.
Airplane mode will disable your cellular and Wi-Fi connectivity, but if you want, you can turn Wi-Fi again in case of emergencies.
If you’re using it, make sure you also turn Bluetooth off. Your Apple Watch and AirPods will be disconnected from your iPhone, but that’s pretty much the idea.