How to update my iOS without wifi
Can I install an app without the use of iOS
iPhone 6s, iOS 12
Can I install an app without the use of iOS
iPhone 6s, iOS 12
You mean without Wi-Fi? If so yes you could install an app on just cellular but Wi-Fi is much preferred.
And your phone is now very old, it cannot be updated to iOS 16.
How to update my iOS without wifi