![Apple iPhone Xs](http://wmstatic.global.ssl.fastly.net/ml/7101123-f-eb46b65f-d9b2-420e-9b20-ab0058eeb83c.png?width=150&height=320)
Apple iPhone Xs
iOS 17
Turn Wi-Fi Assist on or off
You can set your phone to use mobile data automatically when the connection to the Wi-Fi network is weak. To turn Wi-Fi Assist on or off, you need to turn on mobile data.
1. 1. Find "Mobile Service"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7101123-f-07c62da7-3e81-43d8-9b5b-7f91e06e4dd4.png?width=208&height=454)
Press Mobile Service.
![](http://wmstatic.global.ssl.fastly.net/ml/7101123-f-1fa9e749-ee62-431a-9e77-2b10fb13da83.png?width=208&height=454)
2. 2. Turn Wi-Fi Assist on or off
Press the indicator next to "Wi-Fi Assist" to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7101123-f-60ade054-9d5f-4b8c-a1b7-9844ab8ea926.png?width=208&height=454)
3. 3. 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/7101123-f-60ade054-9d5f-4b8c-a1b7-9844ab8ea926.png?width=208&height=454)