iPad Pro 12.9 (2020)
Turning low data usage on or off
You can set your tablet to use less data for different functions, such as download and playback of high quality content, app updates and more.
Press Settings.
Press Mobile Data.
Press Mobile Data Options.
Press the indicator next to "Low Data Mode" to turn the function on or off.
Slide your finger upwards starting from the bottom of the screen to return to the home screen.