PDF Opening Issues

Fix PDF Stuck Loading or Blurry Text on Acrobat Mobile App

Huda Qurayshi Oct 19, 2026 868 views

Question details

Users are experiencing issues where previously accessible PDF files get indefinitely stuck on the loading screen or render with blurry, unclear text on mobile devices.

How to Fix PDF Documents Stuck Loading or Displaying Blurry Text on Mobile

Product: Acrobat Reader Mobile
Device & OS: Android or iOS
Scenario: Attempting to open, load, or read a PDF document using a mobile PDF reader app.
Observed behavior: The PDF document hangs during the loading process or the document's text appears blurry and unreadable once loaded.

Before you start

Ensure your mobile device has a stable internet connection if opening a cloud-based PDF, and try opening the same file on a desktop computer to rule out file corruption.

Solution 1Recommended

Clear App Cache and Force Stop

Clearing the mobile app's temporary cache can resolve rendering glitches that cause blurry text or endless loading screens.

Mobile apps temporarily store data to speed up loading times. If this cached data becomes corrupted or overloaded, the app may fail to render high-resolution text properly, resulting in a blurry display or freezing during launch.

Access Device Settings

On your Android device, navigate to 'Settings' and select 'Apps' or 'App Management'.

Locate the PDF App

Scroll through the application list and tap on your PDF reader (e.g., Acrobat Reader).

Clear Cache

Tap on 'Storage & cache', then select 'Clear Cache'. Finally, tap 'Force Stop' and reopen the application to test the PDF again.

iOS Users: iOS does not have a direct 'Clear Cache' button for all apps. You can achieve the same result by 'Offloading' the app in Settings > General > iPhone Storage, then reinstalling it.

Solution 2

Gather Diagnostic Data for Support

If troubleshooting fails, collect specific version and device details to send to the app's support team for a deeper investigation.

Smooth Mobile PDF Viewer

Read PDFs Clearly and Instantly with WPS Office

Avoid frozen loading screens and blurry rendering by switching to WPS Office. The WPS mobile app features a highly optimized PDF viewer that opens large documents instantly and ensures text remains crisp on both Android and iOS devices.

1. Install WPS Office Mobile: Download the free WPS Office app directly from the Google Play Store or Apple App Store.
2. Locate Your PDF: Open the app, tap the 'Files' tab at the bottom, and select 'PDF' to filter your documents.
3. Open and Read: Tap on your PDF file. It will instantly load with sharp text, allowing you to use features like Mobile View, Annotation, and Text-to-Speech.

Lightweight architecture prevents the app from getting stuck on loading screensAdvanced rendering engine ensures crisp, high-resolution text without blurringFully compatible with standard PDF and Microsoft Office formats (Word, Excel, PowerPoint)Built-in mobile reading mode adapts documents perfectly to your screen size

microsoft office alternative - wps office

Frequently Asked Questions

Why do PDF files look blurry for a few seconds before becoming clear on mobile?

Mobile devices dynamically allocate RAM to render complex PDF elements. When you first open or zoom into a file, the app displays a low-resolution placeholder while processing the high-resolution text in the background. If it stays blurry, it typically indicates a memory issue or app rendering bug.

Can a corrupted PDF file cause the app's loading screen to freeze?

Yes. If a PDF file was interrupted during download or improperly saved, missing data structures can cause the mobile reader to loop infinitely, resulting in a frozen loading screen. Try re-downloading the file to fix this.

How do I check my mobile operating system version for troubleshooting?

On Android, open 'Settings', scroll down to 'About Phone', and look for 'Software Information' to find your Android version. On iOS devices, open 'Settings', tap 'General', and select 'About' to view your current iOS version.

PDF Troubleshooting