Nothing has officially extended the open beta of Nothing OS 4.0, based on Android 16, to its Phone (3a) and Phone (3a) Pro models. Earlier this month, the beta was released for the Phone (3), Phone (2), Phone (2a), and Phone (2a) Plus, and users of the newer devices can now explore the latest features and enhancements.
What’s New in Nothing OS 4.0
Redesigned Nothing Icon System
The update introduces a fresh icon design, reflecting a lighter, more refined aesthetic that aligns with Nothing’s distinctive visual language. The company has emphasized that the design will continue evolving based on user feedback, ensuring a unique and personalized experience.
Stretch Camera Preset and Lock Glimpse
Nothing OS 4.0 brings Lock Glimpse, a feature that transforms your lock screen with high-quality wallpapers tailored to your preferences across nine categories. The feature also delivers timely updates and content meant to enrich your daily interactions. In the near future, Lock Glimpse will allow users to showcase their own photos, replacing all other lock screen content for a fully personalized experience.
Other Enhancements
Additional features of Nothing OS 4.0 remain consistent with previous beta releases, providing performance optimizations and usability improvements to enhance the overall smartphone experience.
How to Join the Open Beta
Users interested in testing Nothing OS 4.0 must first ensure their device is updated to the latest stable build:
- Phone (3a): Asteroids-V3.2-251013-1406
- Phone (3a) Pro: Asteroids-V3.2-251013-1406
It is strongly recommended to back up all personal data before enrolling. The beta registration closes on November 7, 2025.
Installation Steps
- Download and install the “Beta Updates Hub” APK.
- Navigate to Settings > System > Nothing Beta Hub.
- Tap “Join Beta” to register for the program.
- Once registered, tap “Go to Update” to start installation. If this fails, check for updates manually via Settings > System > System updates.
- After installation, provide feedback through Settings > System > Feedback or the official Nothing community forum.
Rolling Back to Stable Version
Users wishing to revert to Nothing OS 3.5 can perform a rollback, which will factory reset the device and erase all data.
Rollback Steps
- Download the appropriate rollback package for your device model.
- Go to Settings > System > Nothing Beta Hub.
- Tap “Import file” and select the downloaded package.
- Follow the on-screen instructions to complete the rollback process.
Nothing OS 4.0 continues to refine the user experience, combining sleek visuals, dynamic lock screen functionality, and robust performance enhancements, making it a compelling update for Nothing Phone enthusiasts.
