Apple iPhone 6s

iOS 9.0

iOS 15.2 iOS 14.0 iOS 13.1 iOS 12.0 iOS 11.0 iOS 10.0 iOS 9.0

My Apple iPhone 6s iOS 9.0 uses a large amount of mobile data

Cause 2 of 3: Wi-Fi Assist is turned on

If Wi-Fi Assist is turned on, your phone will use mobile data when the connection to the Wi-Fi network is poor.

Step 1 of 4

Find "Mobile Data"

Press Settings.

Step 2 of 4

Find "Mobile Data"

Press Mobile Data.

Step 3 of 4

Turn automatic use of mobile data on or off

Press the indicator next to "Wi-Fi Assist" to turn the function on or off.

Step 4 of 4

Return to the home screen

Press the Home key to return to the home screen.

Press Settings.

Press Mobile Data.

Press the indicator next to "Wi-Fi Assist" to turn the function on or off.

Press the Home key to return to the home screen.