How to Fix PDF Comments Not Saving After Editing
Question details
Users are unable to save changes made to PDF comments after closing the editing dialog on a mobile PDF application.

- Product
- Acrobat Reader Mobile
- Device & OS
- not provided
- Scenario
- Adding or modifying comments in a PDF document using a mobile app, then trying to save those edits.
- Observed behavior
- Changes made to the PDF comments are lost or discarded after the editing dialog is closed.
Verify that your mobile device has sufficient storage space to save modifications, and ensure the original PDF is not locked or set to read-only.
Update the PDF Application and Verify Your Workflow
Updating the mobile application to the latest version resolves known software bugs that prevent comment saving.
Software glitches in older versions of PDF readers can interfere with saving annotations and comments. Updating the app and confirming the exact saving workflow can easily resolve this.
Open your device's App Store (iOS) or Google Play Store (Android), search for your PDF reader, and tap 'Update' if a newer version is available.
Open the target PDF file, select an existing comment, make a minor edit, and ensure you explicitly tap 'Save' or 'Done' within the dialog before closing it.
Close the PDF document completely, then reopen it from your recent files to check if the modified comment has been preserved.

Save the Document as a New Copy
Saving a fresh copy bypasses underlying file permission conflicts or minor document corruptions.
Edit and Save PDF Comments Reliably with WPS Office
Avoid lost comments and syncing errors by using WPS Office. With robust built-in PDF editing tools, WPS Office ensures your annotations, highlights, and comments are saved securely across all your devices seamlessly.
- 1. Open the PDF: Launch WPS Office on your mobile device and tap the '+' icon or 'Open' to locate and open your PDF document.
- 2. Access annotation tools: Tap on 'Tools' at the bottom menu and navigate to the 'Annotation' tab.
- 3. Add or edit comments: Select the 'Comment' or 'Note' tool, tap on the document to place it, and type your text.
- 4. Save your changes: Tap 'Done' to close the dialog, then tap the 'Save' icon at the top left to secure your changes immediately.

Frequently Asked Questions
Why do my PDF comments disappear after I save them?
Comments may disappear if your PDF reader app is outdated, if the file is restricted to read-only permissions, or if your device is critically low on local storage preventing new data from being written.
Can I recover PDF comments that did not save properly?
Unfortunately, if the application closed or crashed without successfully committing the changes to the device's memory or cloud storage, the unsaved comments cannot be recovered and must be recreated.
Does the PDF format itself restrict adding comments?
Yes, some PDF documents are protected by the creator with passwords or specific permission restrictions that disable editing, commenting, or printing. You must enter the correct owner password to unlock these features.




