How to Restore Night Mode and Alphabetical Search in Acrobat Reader
Question details
Users need to restore Night Mode, alphabetical file searching, and normal performance after these features were lost in a recent app update.

- Product
- Adobe Acrobat Reader
- Device & OS
- iOS / Mobile
- Scenario
- Reading and managing PDF documents in low-light environments and sorting files.
- Observed behavior
- Night Mode and alphabetical search options are missing from the interface, and the application is experiencing unusually slow performance.
Ensure your mobile device is connected to a stable Wi-Fi network and has enough battery life before initiating the application update.
Update Acrobat Reader from the App Store
Updating the application to version 18.10.01 or newer resolves performance issues and brings back the missing Night Mode and alphabetical search features.
The removal of these features and the slow performance were caused by a bug in a previous release. Installing the latest official update from the App Store will fully restore your normal reading and file management capabilities.
Launch the App Store on your mobile device and tap the 'Search' tab located at the bottom right corner.
Type 'Adobe Acrobat Reader' into the search bar and locate the official application in the results.
Tap the 'Update' button next to the application. Wait for the download and installation process to finish completely.
Open the newly updated Acrobat Reader, select any PDF document to open it, tap the View settings icon, and toggle the 'Night Mode' switch to the on position.

Read PDFs Seamlessly with Night Mode in WPS Office
If you are frustrated by slow performance or missing features in other PDF apps, switch to WPS Office. It provides a lightning-fast, fully-featured PDF reader with built-in Night Mode and easy alphabetical document management.
- 1. Download WPS Office: Install WPS Office Free from your device's app store or download it directly from the official WPS website.
- 2. Open your PDF Document: Launch the WPS Office application, go to the Files tab, and tap on the PDF document you want to read.
- 3. Access the View Tools: Tap the 'Tools' menu at the bottom of the reading screen, then navigate to the 'View' tab.
- 4. Enable Night Mode: Tap the 'Night Mode' icon to instantly switch your screen to a dark, eye-friendly reading interface.

Frequently Asked Questions
Why did Acrobat Reader remove Night Mode and alphabetical search?
These features were not intentionally removed. They were temporarily missing due to a software bug in a previous update, which Adobe successfully patched in version 18.10.01.
How can I check my current Acrobat Reader version?
Open the Acrobat Reader app, navigate to the 'Settings' menu or the 'Help' section, and look for the 'About Adobe Acrobat Reader' page. Your current installed version number will be listed there.
Can I use Night Mode for PDFs in WPS Office?
Yes, WPS Office features a dedicated Night Mode option in its PDF reader. You can easily enable it from the View tools menu to reduce eye strain when reading in dark environments.
How do I sort my files alphabetically in WPS Office?
In the WPS Office file manager, tap the sort icon located near the top of the screen and choose 'Name'. This will automatically arrange all of your documents in alphabetical order.




