There are many default apps that cannot be deleted.
In addition to removing third-party apps, you can remove the following built-in Apple apps that came with your iPhone:
Note: When you remove a built-in app from your Home screen, you also remove any related user data and configuration files. Removing built-in apps from your Home screen can affect other system functionality. See the Apple Support article Remove built-in Apple apps from the Home screen.
Turn cellular data on or off
To turn cellular data on or off, go to Settings, then tap Cellular or Mobile Data. If you're using an iPad, you might see Settings > Cellular Data. If you're using a Dual SIM iPhone, you need to set one of your plans as the primary data number in order to see how much cellular data you've used.
Depending on your carrier and device, you might have additional options listed under Cellular Data Options:
- Enable LTE, 4G, or 3G. You can select what type of network connection to use for voice and data. Learn more about these options.
- Turn Voice Roaming on or off: With CDMA networks, you can turn off Voice Roaming to avoid charges from using other carrier's networks.
- Turn Data Roaming on or off: When you're traveling internationally, you can turn off data roaming to avoid roaming charges. If you have an international data plan, you may need to keep Data Roaming on. Learn more about traveling internationally with your iPhone or iPad.
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