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Caution when viewing PDFs
In some iPhone and Mac environments, PDF viewing may result in unstable page navigation or duplicated pages being displayed.
Apple continues to recommend updating to the latest versions of iOS 26 and macOS Tahoe 26. Please update your device first.
If the issue persists, try opening the PDF directly in the Preview app on your iPhone instead of through the Files app. On Mac, you can also check the file using Quick Look in addition to Preview.
<Apple Support>
○View PDFs and images with Preview on iPhone
https://support.apple.com/ja-jp/guide/iphone/iph7a0cdad0c/ios
○View or edit files with Quick Look on Mac
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