How to reset the APN settings to default on my Apple iPhone X

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Incorrect APN (Access Point Name) settings can cause issues with data services (e.g., email, web browsing) and with picture and video messaging (MMS). To resolve issues, you can reset the APN settings on your Apple iPhone X to the default APN settings that are programmed into your SIM card.
1. Touch Settings.
2. Touch Cellular.
3. Touch Cellular Data Options.
4. Touch Cellular Data Network.
5. Touch Reset Settings.
6. Touch Reset.
7. The APN settings have been reset to default.