AirDrop will allows you to easily share files with other Apple devices when they are nearby.
AirDrop can be done by Bluetooth or over a Wi-Fi network.
However AirDrop can drain your battery — especially if your phone is in “discoverable” mode in AirDrop.
So how to fix AirDrop battery drain issues..
Swipe up from the bottom of the Home screen to access the Control Center
Tap Receiving Off when you’re not using the feature