View or change cellular data settings on iPhone - Apple Support
https://support.apple.com/guide/iphone/view-or-change-cellular-data-settings-iph3dd5f213/ios
webView or change cellular data settings on iPhone. You can turn cellular data and roaming on or off, set which apps and services use cellular data, see cellular data usage, and set other cellular data options. Note: For help with cellular network services, voicemail, and billing, contact your wireless service provider.
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