Nothing Phone (3a) Embraces the Future: Nothing OS 4.0 Open Beta with Android 16

Rahul KaushikTechnologyOctober 25, 2025

Nothing Phone (3a)
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The Nothing Phone (3a) series is joining the latest software revolution, as the company has officially rolled out the Nothing OS 4.0 Open Beta built on top of Android 16. This marks a significant step for Nothing’s mid-range offering, giving users an early look at the refreshed aesthetic and new features that will define the next generation of Nothing’s unique operating system.

Key Features in Nothing OS 4.0 on Phone (3a)

The Nothing OS 4.0 Open Beta brings a suite of new features and design refinements specifically tailored for the Phone (3a) and (3a) Pro models. While the update is primarily focused on incorporating the stability and performance upgrades of Android 16, it also introduces several distinct Nothing-branded experiences.

1. Refreshed Visuals and Iconography

Nothing continues to refine its signature minimalist aesthetic. The beta introduces an all-new Nothing icon design, which the company describes as a “lighter, more refined” visual language. This systematic overhaul aims to provide a cohesive and uniquely Nothing look across the entire interface.

2. Lock Glimpse: A New Lock Screen Experience

Perhaps the most notable new feature is Lock Glimpse, a lock screen utility designed to surface curated, high-quality wallpapers and timely, useful content. While the feature is turned off by default, giving users full control, it can be enabled to offer a new layer of glanceable information and visual appeal, similar in concept to some ‘At a Glance’ widgets. Nothing has also promised future updates to allow users to set their own photos as the Lock Glimpse wallpaper.

3. “Stretch” Camera Preset

Photography enthusiasts will appreciate the addition of the “Stretch” Camera preset. Developed in collaboration with photographer Jordan Hemingway, this preset is designed to give photos a distinctive, cinematic look straight from the Camera app by enhancing deep shadows and extended highlights.

The Underpinnings: What Android 16 Brings

Nothing OS 4.0 is underpinned by the latest Google operating system, Android 16, which itself introduces critical enhancements focusing on accessibility, productivity, and security.

Live Updates and Notification Cooldown

Android 16 aims to declutter the notification shade with Live Updates, a new class of notifications for ongoing activities like food delivery or ride-share pickups that stay up-to-date in real-time. It also introduces Notification Cooldown, a feature that gradually lowers the volume of notification alerts when an app sends a burst of notifications in quick succession, reducing sensory overload.

Enhanced Accessibility and Security

Google’s latest OS offers significant quality-of-life improvements for hearing aid users, allowing them to use the phone’s microphone for clearer calls in noisy environments. On the security front, Android 16 introduces Advanced Protection Mode, offering Google’s strongest mobile device protection against sophisticated online threats and harmful applications.

Beta Status and User Feedback

As an Open Beta, Nothing OS 4.0 on the Phone (3a) is an early, non-finalized software build. Nothing is actively soliciting feedback from its community to refine the operating system before the stable release. Early user reports indicate the presence of some initial bugs, a common occurrence in beta software, but the overall reception to the design changes, particularly the new iconography and customization options, has been largely positive.

Note to Users: It is strongly recommended to back up all personal data before joining any beta program, as these builds may contain stability issues or bugs that could lead to data loss. The official deadline to join the beta program for the Phone (3a) series is typically announced by Nothing on its community channels.

This beta launch signals Nothing’s commitment to providing rapid software updates and an evolving user experience, ensuring the Phone (3a) series stays current with the newest mobile technology.

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