Nothing OS 4 Open Beta: A Visual Revolution for Phone 3a Users (2026)

Are you ready for an exciting upgrade if you own a Nothing Phone 3a or 3a Pro? The tech company has officially released the Open Beta for its much-anticipated OS 4, also known as Android 16, and it's packed with intriguing new features and enhancements that will certainly capture your interest.

Key Highlights:

  • Open Beta Launch: Nothing has confirmed that the Open Beta for OS 4 is now available for users of the Phone 3a and 3a Pro. This update marks a significant evolution in their software, following a limited closed beta earlier in July which paved the way for this public testing phase.

  • Visual Refresh: One of the standout features that users can look forward to is a complete redesign of the user interface (UI). The icons and overall visual elements have been revamped to offer a lighter and more refined aesthetic. This should create a more pleasant user experience, enhancing the look and feel of the device when you interact with it.

  • Lock Glimpse Feature: Also included in this beta release is a new feature called "Lock Glimpse." This functionality allows users to personalize their lock screens with high-quality wallpapers tailored to their preferences across nine different categories. It's worth noting that this feature is turned off by default; however, activating it is a simple task within the settings menu. Users can choose to enable the "Display on lock screen" option, which will automatically update the lock screen with a new wallpaper each time they wake their phone.

  • Interactive Features: Another interactive option is the "Left swipe to explore" toggle. When turned on, swiping left while on the lock screen will reveal a new, engaging piece of wallpaper or content, keeping the experience fresh and exciting. Nothing also has plans to allow users to incorporate their own photos for Lock Glimpse, always ensuring privacy is respected when selecting personal content instead of the curated options.

Camera Enhancements:

The Open Beta introduces noteworthy improvements to the camera functionality as well. The update offers a preset designed in collaboration with renowned photographer Jordan Hemingway. This preset is aimed at enhancing the photography experience by emphasizing deep shadows and extending highlights, producing stunning, cinematic results in your photos.

Getting Started:

For those eager to join the beta test, there are essential steps to follow to get everything set up properly. It is highly recommended that users back up their data prior to starting the beta process to avoid any loss of important information.

Recent Device Updates:

This latest announcement follows the earlier revelation of OS 4.0 back in September, where the company showcased innovative design changes and enhancements to the lock screen experience. The AI capabilities have also been improved, featuring a new dashboard that tracks all active models, including Gemini Flash, Whisper, and GPT-4o. Notably, Nothing also introduced an "Extra Dark" mode, which transforms dark interface elements into true black, providing an aesthetically pleasing dark mode for users.

A Timeline of Changes:

Earlier this year, the Nothing Phone 3 entered the closed beta phase for OS 4 in July, which led to this open beta release in September. While there wasn't a comprehensive list of changes at that time, users were guaranteed access to the innovative features offered by Android 16.

Join the Conversation:

So, what are your thoughts on these updates? Are you excited about the new features, or do you think they miss the mark? Let us know what you think in the comments below! Your opinions could spark an interesting discussion—after all, it's not every day that a tech update stirs up such anticipation!

Nothing OS 4 Open Beta: A Visual Revolution for Phone 3a Users (2026)

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