What is cellular data have to do with updating the phone?

Hey Oxfordreb52,

If you're looking for your options to update iOS on your iPhone, we'd recommend reviewing this article: Update your iPhone or iPad - Apple Support

If you need to install a cellular service update from your carrier, check out the steps here: Manually update your carrier settings on your iPhone or iPad - Apple Support

If you're having an issue with your cellular service, this article may help: If you see No Service, Searching, or SOS on your iPhone or iPad - Apple Support

Thanks!