To turn mobile data on or off, go to Settings, then tap Mobile Data or Cellular. If you're using an iPad, you may see Settings > Mobile Data.
Check For Updates To Your Carrier Settings The next thing to try if your iPhone 7 still won't connect to Cellular data is to make sure you haven't missed any carrier settings updates. Carrier settings updates are regularly distributed to iPhones by Apple to keep your iPhone's Cellular service running efficiently.
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If you're wanting to stay off the grid, you should turn your data off. By having it switched on, your mobile service provider could (theoretically) track your phone's location. You may have previously given apps permission to use your location data too, meaning that you're unwittingly sharing your private information.
Turn mobile data on your Apple iPhone 6s iOS 11.0 on or off You can still use Wi-Fi even though mobile data is turned off. Press Settings. Press Mobile Data. Press the indicator next to "Mobile Data" to turn the function on or off.
On your iPhone 7 or iPhone 7 Plus Press and hold both the side button and the volume down button until you see the Apple logo.
To see the cellular data usage for individual System Services, go to Settings > Cellular or Settings > Mobile Data.
You can turn mobile data on or off to limit apps and services from using the mobile network to connect to the internet. When mobile data is turned on, apps and services will use your mobile data connection when Wi-Fi isn't available.
Tap the gear icon to open your Android's settings menu. Then tap Data usage. In the Data usage menu, tap the Cellular data setting to turn data usage off.
Turn mobile data on your Xiaomi Mi 9 Android 9.0 on or off You can still use Wi-Fi even though mobile data is turned off. Slide two fingers downwards starting from the top of the screen. Press Mobile data to turn the function on or off. Press the Home key to return to the home screen.
Open the Settings app and tap General, then select iPhone Storage. 2. Wait for the page to load a list of all your apps. Once it's generated the list, select the app you want to clear and tap Offload App.
Before you sell or trade your device, check out this Apple Support page.
How to close and disable background data for all services: