![Apple iPhone XR](http://wmstatic.global.ssl.fastly.net/ml/7061123-f-5663c36a-5fb8-4051-9b07-98e269c95d6b.png?width=150&height=320)
Apple iPhone XR
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/7061123-f-441da185-c82c-4086-b613-9bb60500f9c5.png?width=206&height=448)
Press Mobile Service.
![](http://wmstatic.global.ssl.fastly.net/ml/7061123-f-e9d48bac-e04e-48dc-8e9e-57c8e01d5ed9.png?width=206&height=448)
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/7061123-f-75654edf-1520-453c-9d0a-f91c98caee2c.png?width=206&height=448)
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/7061123-f-75654edf-1520-453c-9d0a-f91c98caee2c.png?width=206&height=448)