What is System Data on an iPhone's storage, and how much is normal?

Some of your iPhone's storage is spoken for, but it has an important purpose.

By Roger Fingas Nov. 7, 2026 12:45 pm EST RYO Alexandre/Shutterstock Add Engadget on Google: Google Discover

iPhone storage is more of a concern than ever before. Costly storage upgrades have always been a way for Apple to wring more cash out of buyers, but with memory prices through the roof, you can easily find yourself squeezed to the limit, trying to balance the demands of growing app and file sizes with keeping your budget reasonable. And that's before considering the whopping $2,000 entry price of the iPhone Duo.