Turn on your phone and tap Settings
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2. On the Settings screen, tap WLAN
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3. Locate the application that uses WLAN and cellular mobile at the bottom of the WLAN interface
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4. Then you can see all the apps on your phone here, click the app you want to set
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5. You can change the use of wifi only or not allowed to use the network. You can change to use wifi only or not allow Internet use.
A: Setting Method 1. Tap Cellular Network In the Settings of your iPhone, tap Cellular Network.
2. Tap App Store. Swipe the phone screen to find and tap App Store.
3. Select Wireless LAN Select Wireless LAN or wireless LAN and cellular data.
Connect the device to a WIFI network and open the App Store.