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Nothing OS 4.0 Open Beta 2 Arrives for Phone (3a) Series
Android

Nothing OS 4.0 Open Beta 2 Arrives for Phone (3a) Series

November 28, 2025
2 min read

Nothing OS 4.0 Open Beta 2 Now Available for Phone (3a) Series

Nothing continues its testing phase of the Android 16-based Nothing OS 4.0 update, and the second Open Beta is now rolling out to Phone (3a) and Phone (3a) Pro users. This update focuses on refining the user experience and addressing early feedback from Beta 1.

What's New in Open Beta 2?

The second Open Beta iteration is a relatively small update, weighing in under 100MB. Here's a breakdown of the key improvements:

  • Optimized Photo Capture: The update includes refinements to photo capture, providing a more accurate preview at various zoom levels. This aims to better reflect the final image.

  • Essential App Stability: Improvements have been made to enhance the stability of Essential Apps, leading to a smoother and more reliable usage experience.

How to Update

If you're already participating in the first Open Beta program, you’ll receive this update over-the-air (OTA). Simply navigate to Settings > System > System Update and download/install the update.

Rolling Back to Nothing OS 3.2

Need to revert back to the previous stable version? You can easily downgrade to Nothing OS 3.2 using a rollback file.

Here's how:

  1. Download the appropriate rollback package: Phone 3a | Phone 3a Pro.

  2. Go to Settings > System > Nothing Beta Hub.

  3. Select Import File and choose the downloaded package.

  4. Follow the on-screen instructions to complete the process.

What's Next?

Nothing is expected to release the stable version of Nothing OS 4.0 for both Phone (3a) models soon. Ensure you have ample storage space and a recent backup to prepare for the final update.

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