Must I connect my phone to wifi before it can update ??
Tried to download an app and it was saying I have to update my iOS.Later tried updating my iPhone and it is asking me to connect to WiFi before I can update it .
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You can update over cellular if you have an iPhone 12 or later with a 5G connection.
If you have an iPhone 11 or earlier, you must update by using WiFi or a computer.
Update your iPhone, iPad, or iPod touch
• If you have an iPhone 5S or 6/6plus, the highest you can update to is 12.5.7
• If you have an iPhone 6S through 7, or SE 1st generation, you can update to 15.7.8
• If you have an iPhone 8 or higher, or SE 2nd or 3rd generation,you can update to 16.6
Go to Settings > General > Software Update.
This link will show you how to update your iPhone, iPad, or iPod touch using WiFi -
Update your iPhone or iPad - Apple Support
This link will show you how to update using your computer -
Update iOS on iPhone - Apple Support