Other PDF Issues

How to Fix Non-Latin Search Case Sensitivity in Acrobat Reader for Android

Algirdas Jasaitis Oct 18, 2026 868 views

Question details

The user needs to fix an issue where searching for non-Latin characters in Acrobat Reader for Android is incorrectly treated as case-sensitive.

How to Fix Non-Latin Search Case Sensitivity in Acrobat Reader for Android

Product: Adobe Acrobat Reader
Device & OS: Android
Scenario: Searching for specific text strings containing non-Latin characters within a PDF document.
Observed behavior: The search function differentiates between uppercase and lowercase first letters for non-Latin characters, returning different results and omitting valid matches.

Before you start

Ensure your Android device is connected to a stable Wi-Fi or cellular network so you can access the Google Play Store to download the latest app updates.

Solution 1Recommended

Update Acrobat Reader and Report the Issue

Since this unexpected case sensitivity is a known bug affecting non-Latin processing in certain builds, updating the app is the primary method to apply bug fixes.

The Acrobat Reader mobile application generally handles Latin character searches smoothly. However, non-Latin character encoding can occasionally trigger case sensitivity bugs. Installing the latest patch from Adobe is the most effective way to resolve unexpected search behaviors.

Open the Google Play Store

Unlock your Android device and open the Google Play Store application.

Check for Updates

Tap on your profile icon in the top right corner, then select 'Manage apps & device' from the menu.

Update the App

Look for 'Adobe Acrobat Reader' in the list of available updates and tap the 'Update' button next to it.

Submit a Bug Report

If the problem continues after updating, open the Acrobat Reader app, navigate to 'Settings' or 'Help', and use the feedback option to report the bug. Include your device model, Android OS version, and Acrobat app version in the report.

Update Acrobat Reader and Report the Issue

Temporary Workaround: While waiting for a permanent patch, try searching using only lowercase non-Latin characters, or use an alternative PDF reader on your mobile device to locate your text accurately.

Powerful Mobile PDF Reader

Search Non-Latin Text Accurately with WPS Office

Bypass search bugs by using WPS Office for Android. Its robust built-in PDF reader offers precise, case-insensitive text search for all languages and scripts, ensuring you never miss a match.

1. Install WPS Office: Download and install the free WPS Office app from the Google Play Store.
2. Open the PDF File: Launch WPS Office, tap on the 'PDF' tab, and open the document you need to search.
3. Access the Search Function: Tap the 'Search' (magnifying glass) icon located in the bottom toolbar or top menu.
4. Find Your Text: Enter your non-Latin text into the search bar. WPS Office will quickly find all instances regardless of capitalization.

Flawlessly search and navigate PDF documents, matching non-Latin characters without unintended case sensitivity errors.Fully compatible with standard PDF formats and files created by Microsoft Office or Adobe Acrobat.Lightweight, fast, and optimized for Android devices to handle large documents smoothly.Includes a comprehensive suite of editing, annotation, and signature tools directly on your mobile device.

microsoft office alternative - wps office

Frequently Asked Questions

Why does my PDF search miss results when I use a capital letter?

This occurs when a PDF reader incorrectly processes the search query with strict case sensitivity. In some versions of Acrobat Reader on Android, there is a known bug that causes the app to differentiate between uppercase and lowercase non-Latin characters, leading to omitted matches.

Can I manually turn off case-sensitive search in Acrobat Reader for Android?

No, the Android version of Acrobat Reader lacks a manual toggle for case sensitivity in its basic search function. The app automatically determines search parameters, making app updates the only way to fix underlying search bugs.

Does this search issue affect regular Latin characters?

Generally, no. Searches using standard Latin characters typically process normally in Acrobat Reader without unintended case sensitivity, successfully finding all text matches whether you type in uppercase or lowercase.

What details should I provide when reporting a mobile PDF search bug?

To help developers investigate the issue, always include your device model, your exact Android OS version, the specific version number of the installed PDF reader app, and an example of the non-Latin text that is failing to search correctly.

PDF Troubleshooting