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Fix Apostrophe Displaying as Trademark in Adobe Acrobat on iOS 11
Question details
Users need a way to correct a text rendering error where apostrophes do not display properly in their PDF files.
- Product
- Adobe Acrobat Reader
- Device & OS
- iOS 11
- Scenario
- Opening and reading PDF documents after upgrading the device operating system to iOS 11.
- Observed behavior
- Apostrophes incorrectly appear as superscript trademark symbols within the PDF text instead of standard punctuation marks.
Ensure your device is connected to a stable Wi-Fi network and that you have your Apple ID credentials ready, as you will need to download application updates from the App Store.
Update Adobe Acrobat Reader to the Latest Version
Installing the latest software patch from Adobe resolves this specific text rendering bug.
Adobe has acknowledged this display rendering issue caused by the iOS 11 update and released an official patch. Updating your application to version 17.10.31 or later will restore normal text display.
Navigate to your iOS home screen and launch the App Store application.
Tap your Profile icon located in the top-right corner of the screen to view pending updates.
Scroll down to find Adobe Acrobat Reader in the list of available updates, and tap the 'Update' button next to it.
Report the Issue to Adobe Support with a Screenshot
If updating the application does not fix the problem, you may need to submit a visual report to Adobe's technical support team.
Try WPS Office for Flawless PDF Reading on iOS
If you continue to experience rendering bugs in other applications, switch to WPS Office. It provides a lightweight, free, and highly compatible alternative for viewing, editing, and managing PDFs and Office documents without visual glitches.
- 1. Install WPS Office: Search for WPS Office in the iOS App Store and tap Download to install it for free.
- 2. Open your files: Launch the app, tap the 'Files' tab at the bottom, and browse your device to locate the affected PDF.
- 3. Read flawlessly: Tap the PDF to open it in WPS Office's built-in PDF viewer, where text and apostrophes will render accurately.
Frequently Asked Questions
Why do apostrophes change to trademark symbols in my PDF?
This was a known text rendering bug triggered by the iOS 11 system update interacting with older versions of Adobe Acrobat Reader, causing specific character encodings like apostrophes to be misinterpreted and displayed incorrectly.
Will reinstalling the app fix the text display issue?
Reinstalling the app will fix the issue, provided that you download the latest version from the App Store (version 17.10.31 or newer), which contains the official patch for this rendering bug.
Are my actual PDF files corrupted because of iOS 11?
No, your PDF files are completely safe and uncorrupted. The issue is strictly a visual rendering glitch within the outdated Adobe Acrobat Reader app. Opening the same file on another device or using a different PDF reader will display the text correctly.
