![Apple iPhone 11 Pro Max](http://wmstatic.global.ssl.fastly.net/ml/7071123-f-a1e023c1-bf42-4603-b46f-8925b0d10dfa.png?width=150&height=320)
Apple iPhone 11 Pro Max
iOS 17
1 Find "Mobile Service"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7071123-f-67acfb0e-fc31-4a91-b661-a23f8183be42.png?width=210&height=454)
Press Mobile Service.
![](http://wmstatic.global.ssl.fastly.net/ml/7071123-f-3d281887-765b-4520-81fd-7157f7b97db5.png?width=210&height=454)
2 Turn mobile data on or off
Press the indicator next to "Mobile Data" to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7071123-f-a40e57bf-f800-46b2-ad09-7bf42150dc0a.png?width=210&height=454)
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.
![](http://wmstatic.global.ssl.fastly.net/ml/7071123-f-cbcd7814-1ef6-4297-8fe2-34ddf16701d4.png?width=210&height=454)
4 Return to the home screen
Slide your finger upwards starting from the bottom of the screen to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7071123-f-cbcd7814-1ef6-4297-8fe2-34ddf16701d4.png?width=210&height=454)