Is it a must I use Wi-Fi to backup my iCloud
Is it a must I use Wi-Fi to backup my iCloud
iPhone 6s Plus, iOS 15
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Yes, you will have to use a Wi-Fi network to create your iCloud backup.
But your can also create a backup on your computer, if you don't have access to a Wi-Fi network.
How to back up your iPhone, iPad, and iPod touch with your Mac - Apple Support
How to back up your iPhone, iPad, or iPod touch with iTunes on your PC - Apple Support