Apple iPad Pro 12.9 (2021)
iPadOS 16.1
1. Find "Mobile Data Options"
Press Settings.
Press Mobile Data.
Press Mobile Data Options.
Press Data mode.
2. Turn low data usage on or off
Press the required setting to turn the function on or off.
3. Return to the home screen
Slide your finger upwards starting from the bottom of the screen to return to the home screen.