![Apple iPhone Xs Max](http://wmstatic.global.ssl.fastly.net/ml/7101123-f-3b7c0a81-e19e-4ebc-91c0-1da23b86a2f5.png?width=150&height=320)
Apple iPhone Xs Max
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-7cad6ffb-3861-43c8-a4c3-fea0bfeaf19a.png?width=210&height=454)
Press Mobile Service.
![](http://wmstatic.global.ssl.fastly.net/ml/7101123-f-3d281887-765b-4520-81fd-7157f7b97db5.png?width=210&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-8c80c7b0-88d1-4f3f-8998-9278eb3aad47.png?width=210&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-8c80c7b0-88d1-4f3f-8998-9278eb3aad47.png?width=210&height=454)