Software
Can an un-updated software disrupt my internet (mobile data) connectivity?
iPhone 11, iOS 16
Can an un-updated software disrupt my internet (mobile data) connectivity?
iPhone 11, iOS 16
Not having the recent carrier updates might be a reason for that:
Manually update your carrier settings on your iPhone or iPad - Apple Support
Not having the recent carrier updates might be a reason for that:
Manually update your carrier settings on your iPhone or iPad - Apple Support
Software