How to Fix Adobe Acrobat Hanging When Starring a PDF on Mobile
Question details
Adobe Acrobat Reader freezes or becomes unresponsive when attempting to mark a PDF document with a star on a mobile device.

- Product
- Adobe Acrobat Reader
- Device & OS
- not provided
- Scenario
- The user is attempting to favorite or highlight an important PDF file by tapping the star icon within the mobile application.
- Observed behavior
- The application completely freezes every time a user marks a PDF with a star, requiring a forced restart of the app.
Force close the Adobe Acrobat app to ensure it is not stuck running in the background, and check if the PDF retained the star after you reopen the application.
Restart Your Device and Update Acrobat Reader
Rebooting the device clears temporary system glitches, while updating the application ensures you have the latest bug fixes from Adobe.
Mobile applications can occasionally hang due to corrupted temporary memory or unpatched software bugs. Running the latest version of Acrobat Reader is highly recommended to resolve known freezing issues.
Power off your smartphone or tablet completely, wait a few seconds, and then turn it back on to clear system memory.
Open the Apple App Store (iOS) or Google Play Store (Android), search for 'Adobe Acrobat Reader', and tap the 'Update' button if a new version is available.
Launch Acrobat Reader, open a PDF document, and tap the star icon again to see if the freezing issue has been resolved.
Clear App Cache (Android Devices)
Clearing the temporary cache can fix freezing issues caused by corrupted localized app data.
Use WPS Office to View and Manage PDFs Smoothly
If your current PDF reader continues to freeze, switch to WPS Office. It provides a highly stable, lightweight PDF reader and editor for mobile devices, allowing you to easily organize, star, and annotate your PDF documents without hanging.
- 1. Download WPS Office: Install the WPS Office application from your mobile device's App Store or Google Play Store.
- 2. Open your PDF file: Launch WPS Office, navigate to the 'Files' or 'PDF' tab, and tap on your document to open it in the built-in PDF viewer.
- 3. Star your document: Tap the 'Star' icon in the top menu to instantly add the file to your Favorites for quick access, bypassing any freezing issues.

Frequently Asked Questions
Why does Adobe Acrobat freeze on my phone when I perform simple actions?
App freezing is typically caused by outdated software versions, corrupted app cache, or insufficient device memory. Updating the app and clearing its temporary cache often resolves these crashes.
Will I lose my PDF annotations if the app hangs?
If the application hangs before it can sync or locally save, recent unsaved edits might be lost. It is recommended to ensure your app is up-to-date to prevent crashes during editing.
How do I find my starred PDFs after reopening the app?
In most mobile PDF readers, you can locate your starred or favorited files by navigating to the 'Home' tab and looking for a specific 'Starred' or 'Favorites' filter category.




