Nothing has proclaimed that Nothing OS 4.0, founded on Android 16, is currently available in Open Beta for Nothing Phone (3a) users. This update introduces several innovative lock screen features and a distinctive camera preset for immediate exploration.
If you own a Nothing Phone (3a) or (3a) Pro, your opportunity to experience the upcoming advancement is now available. Nothing has officially released the Open Beta for Nothing OS 4.0, constructed on the latest Android 16.
This is not the final, stable version, of course, but it presents a chance to engage with the newest features and assist the team in eliminating bugs prior to the official launch.
The strategic choice to initiate the beta with the mid-range (3a) series first enables Nothing to collect a wide and varied range of hardware usage data without compromising the performance of its flagship Phone (3), thus ensuring a more refined rollout when the stable version is introduced later this year.
The update incorporates several significant modifications, particularly concerning the camera and lock screen, in addition to fundamental performance enhancements derived from the core Android 16.
We addressed these modifications when the beta was initially revealed, but for the sake of clarity, here’s a concise overview of what’s new, followed by an in-depth exploration of the most eagerly awaited features.
What’s new in the OS 4.0 Beta?
All-new Nothing icon design: The company describes it as a "lighter, more refined" visual language.
"Stretch" Camera preset: This new camera filter, developed in collaboration with photographer Jordan Hemingway, aims to impart a "cinematic look" to photos, featuring deeper shadows and more vibrant highlights.
Lock Glimpse: This is the standout feature. It integrates curated, high-quality wallpapers to your lock screen and can display "timely updates," similar to Google’s 'At a Glance' widget. The outstanding aspect? It is disabled by default.
Deeper Dive: Defining Nothing’s Evolving Aesthetic
The "lighter, more refined" visual language referenced in the release notes indicates a subtle yet significant transition in Nothing’s design philosophy.
While the company retains its hallmark aesthetic—focused on transparency, monochrome, and the proprietary dot-matrix font—the updated icons seem to introduce a softer touch, departing from the previous stark, hard-edged black lines.
This gradual incorporation of more nuanced grayscale and enhanced spacing seeks to improve readability and minimize visual fatigue, particularly throughout the extensive app drawer and quick settings panel.
The outcome is a user interface that conveys maturity, preserving its distinctive appearance while addressing common user grievances related to the previous, occasionally overwhelming, visual density.
The Cinematographer’s Touch: Understanding the "Stretch" Preset
Perhaps the most exciting collaboration announced is the new "Stretch" Camera preset, developed in partnership with Jordan Hemingway. Hemingway, renowned for his highly stylized, high-contrast work in fashion and editorial photography, has translated his distinct visual flair directly into a mobile filter.
This preset is not merely an Instagram overlay; it is a complex algorithmic adjustment designed to mimic the look of professional film development.
Users choosing "Stretch" will immediately notice dramatically "crushed" blacks, meaning the darkest areas of the image lose detail and become pure shadow, combined with an aggressive pull on specular (brightest) highlights.
This combination delivers a bold, striking aesthetic that injects everyday snapshots with a dramatic, editorial quality. For users who value atmosphere and "vibe" over pure color accuracy, this preset offers a powerful tool to create immediate visual impact, cementing Nothing's focus on unique software experiences rather than just hardware specifications.
The Philosophy Behind Lock Glimpse
The introduction of Lock Glimpse marks Nothing’s clearest attempt yet to enhance the ambient information experience on its phones. While comparisons to Google's popular 'At a Glance' widget are inevitable, Nothing approaches the feature with a commitment to user choice.
Lock Glimpse aims to deliver contextual information—like upcoming appointments, real-time weather alerts, battery levels of connected accessories, or delivery updates—directly onto the lock screen.
However, by making the feature off by default, Nothing reinforces its core philosophy of digital minimalism. They empower the user to invite information in, rather than having it thrust upon them.
This prevents the lock screen from becoming a source of distraction, allowing users to activate it only if they prioritize timely, context-aware updates presented in Nothing’s characteristic clean typeface.
Getting it on your device is a bit of a process, as outlined by Nothing, but it's straightforward if you follow the steps. Just remember to back up your data first—this is a beta, after all.
Prospective testers should be prepared for potential instability; this initial release may feature app incompatibilities, unexpected reboots, and accelerated battery drain.
However, participating in the Open Beta provides the unique opportunity to shape the final product, with Nothing heavily relying on community feedback reports to refine the OS 4.0 experience before its polished public debut.

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