Apple iPhone 12

Apple iPhone 12

iOS 17

iOS 18 iOS 17

My Apple iPhone 12 iOS 17 uses a large amount of mobile data

Cause 7 of 7: Mobile data usage for applications is turned on

If mobile data usage for applications is turned on, the applications will use mobile data when your phone is not connected to a Wi-Fi network.

Solution: Turn off mobile data usage for applications.

Step 1 of 5

Find "Mobile Service"

Press Settings.

Step 2 of 5

Find "Mobile Service"

Press Mobile Service.

Step 3 of 5

Turn mobile data on or off

Press the indicator next to "Mobile Data" to turn the function on or off.

Step 4 of 5

Turn use of mobile data for applications on or off

Press the indicators next to the required applications to turn the function on or off.

Step 5 of 5

Return to the home screen

Slide your finger upwards starting from the bottom of the screen to return to the home screen.

1 Find "Mobile Service"

Press Settings.

Press Mobile Service.

2 Turn mobile data on or off

Press the indicator next to "Mobile Data" to turn the function on or off.

3 Turn use of mobile data for applications on or off

Press the indicators next to the required applications to turn the function on or off.

4 Return to the home screen

Slide your finger upwards starting from the bottom of the screen to return to the home screen.