British tech brand Nothing has started rolling out its Android 16–based NothingOS 4.0 update to the Phone 3a and Phone 3a Pro models. According to a report from GSMArena, users of both devices have already begun receiving the update, even though the company hasn’t officially announced the rollout yet.
Earlier, Nothing had confirmed that NothingOS 4.0 would gradually expand to more models after it arrived on the flagship Phone 3. Now that the 3a series is getting it, the update is expected to reach the Nothing Phone 2, Phone 2a, and even the newly launched Phone 3a Lite, which ships with Android 15–based NothingOS 3.5.
NothingOS 4.0 is one of the company’s biggest updates so far, packed with performance upgrades, a refreshed design, new AI-powered tools, better camera presets, and deeper customization. Here’s a complete look at what’s new.
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Essential Space Gets a Smarter AI Dashboard
One of the headline additions is the upgraded AI activity dashboard in Essential Space. This feature was first introduced on the Phone 3, and now it’s coming to the 3a series as well.
Nothing says this dashboard gives a clearer breakdown of how large AI models work on the device. It helps users understand what AI processes are happening in the background, providing more transparency about on-device AI behaviour.
The new dashboard also improves:
- Tracking of background AI tasks
- Reporting of model activity
- How apps use device intelligence
This makes the overall AI experience easier to monitor and more user-controlled.
Essential Apps & Playground: More AI-Powered Tools
NothingOS 4.0 brings a new feature called Essential Apps, which are lightweight, AI-generated widgets created through Playground. Users can design, customise, and share them with others.
- The Nothing Phone 3 supports up to six Essential Apps on the home screen.
- The Phone 3a and 3a Pro can place two Essential Apps for now.
These mini apps help with quick tasks, reminders, personalised cards, smart shortcuts, and more—without installing heavy apps.
Camera Upgrades: The New “Stretch” Preset
Photography gets a creative boost with the new Stretch camera preset, designed in collaboration with fashion photographer Jordan Hemingway. This mode adds a cinematic, stylised tone directly from the Camera app.
What it enhances:
- Deeper shadows
- Wider highlights
- Expressive colors and tones
It basically gives your photos an editorial, magazine-like look without needing editing apps. It’s ideal for street shots, portraits, and dramatic scenery.
App Optimisation: Smarter Multitasking & Faster Startup
NothingOS 4.0 introduces a new App Optimisation system. It fine-tunes how apps launch and behave in the background.
Benefits include:
- Quicker app startup
- Better RAM usage
- Smoother app switching
- More consistent multitasking performance
If you move between many apps throughout the day, this update makes everything feel a lot more fluid.
Performance Boosts Across the System
NothingOS 4.0 focuses heavily on stability and speed. Users on the 3a series will notice several improvements right away.
Key upgrades include:
- Faster lock screen and always-on display response
- Smarter automatic brightness adjustment
- Better Bluetooth pairing and connection stability
- More reliable Wi-Fi switching and overall network performance
- Improved camera consistency and quicker processing
- Reduced system lag during heavy usage
These refinements help deliver a cleaner, more refined daily experience.
A Fresh, Cleaner Design Style
NothingOS 4.0 also comes with a visual refresh. The interface looks lighter and neater, with unified design elements that feel more polished.
What’s new on the design side:
- Redesigned Quick Settings panel
- New lock screen clock styles
- Updated system icons for a more cohesive look
- Cleaner spacing and layout
- Modernized animations
- Improved haptic feedback for more natural touch responses
The whole UI feels more balanced and easier to navigate.
Extra Dark Mode: Deeper Blacks & Less Eye Strain
The upgraded Extra Dark Mode introduces richer blacks and more contrast. It’s easier on the eyes during nighttime use and is more energy-efficient on OLED displays.
Benefits:
- Lower eye fatigue
- Better text readability in low light
- Slightly improved battery life
- More immersive look
Pop-up View Improvements
Pop-up View gets better multitasking capabilities. Now you can:
- Keep two floating app icons active
- Swipe up on the bottom to shrink a window
- Swipe down to restore it to full screen
- Switch between mini windows more quickly
It’s a handy feature for browsing, watching videos, or replying to messages without leaving the current app.
New Privacy Tools & Search Controls
NothingOS 4.0 introduces new ways to protect your data and customise your device.
Updates include:
- Ability to hide apps from the home screen or app drawer
- More precise search filters
- Better app permission controls
- Stronger background process protection
These changes make the device feel more secure while helping users reduce unwanted clutter.
AI Usage Dashboard & Home Screen Controls
Another notable addition is the AI usage dashboard. It tracks how large-model AI tasks are handled when using Essential Space. This gives users more clarity on what the AI is doing and when.
You can also now:
- Hide apps more easily
- Control search categories
- Manage background AI tasks
- Optimise AI-generated widgets
These changes help keep your home screen organised and your system running efficiently.
Final Thoughts
The Android 16–based NothingOS 4.0 update is a major upgrade for the Phone 3a series. It boosts performance, improves battery efficiency, enhances camera capabilities, and introduces a cleaner visual style. The addition of new AI tools, Essential Apps, and better multitasking features makes the device feel more modern and powerful.
Note: The information in this article is based on reports and early user updates regarding the NothingOS 4.0 rollout. Software features, availability, and update timelines may vary by region and device model. Users are advised to check for the latest official announcements from Nothing before installing any software update. All trademarks and product names are the property of their respective owners.
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