iOS 16 update
iOS 16 does not show in software updates. So how can I get it to show up?
iPhone XS Max, 15
You might have used an iOS beta version on your device. Should be this case, go to Settings>General>VPN & Profile management, delete the beta profile, restart your iPhone, check for updates availability again.
Shoudn't be this case, contact Apple Support directly, using this link:--> Get Support
Regards
Giulio