Why is the iCloud backup of my new iPhone 17 Pro ten times larger than the backup of my iPhone 15 Pro was?

My iPhone 15 Pro iCloud backup was 11GB. Backed it up to my iMac and restored my new 17 Pro from that backup. iCloud backup of the 17 Pro is showing 128GB. Why the huge difference?

iPhone 17 Pro, iOS 26

Posted on Sep 20, 2025 11:46 AM

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Why is the iCloud backup of my new iPhone 17 Pro ten times larger than the backup of my iPhone 15 Pro was?

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