IPHONE
How to turn off Connectivity Assist (Wi-Fi Assist) on an iPhone
In short
On iOS 27, open Settings, tap Wi-Fi, scroll to the bottom and switch off Connectivity Assist. It replaced Wi-Fi Assist, which used to be under Mobile Data. While it is on, the iPhone uses mobile data when the Wi-Fi is slow, which can cost data.
If your mobile data runs out faster than expected while you are mostly on Wi-Fi, check Connectivity Assist: Apple says that with it on you might use more mobile data. It replaces Wi-Fi Assist, which was in the mobile data (Cellular) settings, and now appears in Wi-Fi settings.
5 of 5 steps show a real screenshot from our iPhone 14 Pro.
Steps
- 1
Open Settings and tap Wi-Fi
Wi-Fi is near the top of the main Settings list, under Airplane Mode. On our iPhone it read Off at this point.
- 2
Scroll to the bottom
Make sure the Wi-Fi switch at the top is on. Below Known Networks and Other Networks is Connectivity Assist.
- 3
Read what it does
The note under it says it adds mobile data alongside Wi-Fi to keep your internet connection steadier, and the iPhone records how much mobile data it has used.
- 4
Switch it off
Tap the Connectivity Assist switch to turn it off. It is green while it is on, as in our picture, which was taken before the tap. The iPhone then stops using mobile data in addition to Wi-Fi.
- 5
Check the data it used
Your total mobile data is under Settings, Mobile Service, boxed in the picture. Reset Data Usage, under the Connectivity Assist switch on the Wi-Fi page (step 2 picture), sets its own counter back to zero.
If you do not see this option
- Your iPhone runs iOS 26 or earlier. The switch is still called Wi-Fi Assist. It is at the bottom of Settings, Mobile Data (Cellular in US English).
- There is no Connectivity Assist row. Apple says to make sure Wi-Fi is on in Settings, Wi-Fi, then scroll down to find it. Source: About Connectivity Assist
- The phone does not have the latest iOS. Apple says Connectivity Assist replaces Wi-Fi Assist, which was in the mobile data (Cellular) settings. Source: About Connectivity Assist
- It was already off after updating. Apple says Connectivity Assist is on after the update only if Wi-Fi Assist was on before. If Wi-Fi Assist was off, it stays off. Source: About Connectivity Assist
If this does not work
- Mobile data is still used on one network but not another. Apple says Connectivity Assist can be turned off for a specific network, for example one with an ad-blocking router. Check that network's settings in Wi-Fi.
- It seems to do nothing. Apple says it switches off while you're roaming in another country, when Low Data Mode is on for mobile data, or in some outside apps that stream video and audio.
- Still using a lot of mobile data? Check your mobile data usage in Settings, Mobile Service.
Good to know
Connectivity Assist borrows mobile data to keep you connected when the Wi-Fi is too slow to use or not working, say in the garden or at a coffee shop. With it off, the iPhone does not get this help. Apple says that with it on you might use more mobile data. Apple's Wi-Fi settings also offer Low Data Mode for each network: see how to turn on Low Data Mode on an iPhone.
About this guide
- Device
- iPhone
- Shown on
- iOS 26.7.1 (iPhone 14 Pro), iOS 27.0.1 (iPhone 14 Pro)
- App
- Settings
- Path
- Settings › Wi-Fi
- Real screenshots
- 5 of 5 steps
- Checked
- October 2026
- Sources
- 2 official, linked below
The screenshots are our own, taken on an iPhone 14 Pro running iOS 27.0.1. They were recorded over USB in QuickTime. It was switched on on our phone. The network names are blurred.
What changed: rewritten for iOS 27 with our own screenshots. Wi-Fi Assist is now Connectivity Assist, under Wi-Fi.
Sources
Links checked October 2026. Menus and features can change with updates.Did this guide work for you?
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