Can I update my software without connecting to WiFi?
Start here: https://support.apple.com/en-us/HT204204
Start here: https://support.apple.com/en-us/HT204204
Only if you can use a computer's Internet connection, or on the iPhone 12 and newer, a 5G network.
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See the links in the "If you can't see the update on your device, you can update manually using your computer." paragraph of the Related Article above.
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You can't use an iPhone's cellular connection to update except as noted above. Go to a computer.
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How do I use a computers internet connection?
I can see the update on my phone but I don’t have a WiFi internet connection only cellular
Updating iphone 6
Trying to get the current IOS update on my iphone 6
An iPhone 6 isn't capable of 13 or above. To update it to 12.5.5, follow the instructions in the Related Article at the top of the page.
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Updating iOS
