Nothing OS 4.0 for Nothing Phone 3a has finally arrived and it is creating quite a buzz among tech lovers. The company started rolling out this major software update on November 21, 2025 for Phone 3a and Phone 3a Pro users.
Based on Android 16, this update brings exciting AI tools, fresh design changes and improved Glyph features that make your phone experience smoother than ever. The update size is around 2 to 3.26 GB and comes with enhanced camera presets, better multitasking options and refined animations.
Nothing has kept its promise of delivering timely updates and this release shows their commitment to user satisfaction. If you own a Nothing Phone 3a or 3a Pro, this update is worth the download.
Key Takeaways
- Nothing OS 4.0 update started rolling out on November 21, 2025 for Phone 3a and 3a Pro
- Update is based on Android 16 and brings AI-powered features through Essential Space
- File size ranges between 2 to 3.26 GB depending on device variant
- Major improvements include redesigned icons, Extra Dark Mode and smoother animations
- Enhanced Glyph features with Flip to Glyph and Glyph Progress updates
- Camera gets new Stretch preset, adjustable filters and longer Motion Photos
- Pop-up multitasking now supports two floating windows at once
- Nothing Phone 3a Lite users will get the update in early 2026
Understanding Nothing OS 4.0 Update Rollout
Nothing has taken a phased approach for the OS 4.0 rollout. The open beta testing started on October 24, 2025 allowing early users to test features like Lock Glimpse and camera presets. The stable version began reaching users from November 21 with build number B4.0-251118-1551.
By the end of November 2025, most Phone 3a and 3a Pro users received the update without any major bugs. The company plans to complete full rollout within one to two weeks from initial release. Phone 3a Lite owners need to wait until early 2026 for their turn. This staged rollout helps Nothing ensure stability and fix any issues before wider distribution.
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What Makes Nothing OS 4.0 Special
Nothing has focused on creating a flow state experience with this update. The interface feels faster and more responsive than previous versions. You will notice redesigned app icons for Camera, Gallery and Weather apps that follow a cleaner minimalist design language.
The status bar gets new battery, wifi and network icons that look modern and fresh. System animations are buttery smooth making app switching feel effortless. Nothing has added two new lock screen clock faces to personalize your device. The Extra Dark Mode under Settings offers a pitch black theme perfect for night time usage. These small changes add up to create a polished user experience.
AI Features and Essential Space Improvements
AI integration is a major highlight of Nothing OS 4.0 for Nothing Phone 3a. The Essential Space app now includes an AI Usage dashboard that tracks privacy and shows which features use AI models. This transparency helps users understand how their data is being processed.
Essential Apps brings AI powered mini widgets that provide quick information at a glance. Nothing Playground is in alpha stage and allows community members to share mini apps, camera presets and equalizer profiles.
The Flip to Record feature now automatically organizes photos, notes and videos in Essential Space for easy access. These AI tools are practical and add real value without feeling gimmicky.
Glyph Interface Gets Smarter
The signature Glyph interface receives meaningful upgrades in this update. Flip to Glyph now lets you choose between Silent or Vibrate mode instead of just one option. Glyph Progress uses Android 16 Live Update notifications which means better compatibility with third party apps like food delivery and ride sharing services.
You can now see real time progress updates through the Glyph lights on the back of your phone. These improvements make the Glyph interface more useful in daily life. Nothing has also optimized wifi and bluetooth stability ensuring better connectivity overall. The always on display and screen brightness controls work more efficiently now.
Camera Enhancements Worth Trying
Photography fans will love the camera improvements in Nothing OS 4.0. The Stretch preset developed in collaboration with photographer Jordan Hemingway gives artistic results perfect for creative shots. Filters now have adjustable intensity so you can control how strong the effect appears. Motion Photos can capture longer clips with audio making your memories more vivid.
Nothing has added new watermarks and artistic frames to personalize your photos. The camera interface feels faster and more streamlined making it quicker to capture moments. These updates show Nothing is serious about improving camera capabilities on the Phone 3a series.
Performance and Multitasking Upgrades
Nothing OS 4.0 brings noticeable performance improvements. Apps start faster and the overall system feels more stable. The pop up view feature now supports two floating apps at the same time making multitasking easier.
Quick Settings tiles can expand to 2×2 size giving you bigger touch targets. Widgets come in new sizes for Weather, Pedometer and Screen Time apps. The app drawer and widget management feel more organized and intuitive. Sound Recorder app got a complete revamp with better functionality. Most users report smooth installation with no widespread bugs in the stable release. System optimizations ensure your phone runs efficiently without lag.
How to Install Nothing OS 4.0 Safely
Before updating, backup all your important data using Nothing’s built in tools or Google Drive. Make sure your phone has at least 50 percent battery and connect to stable wifi network. Update the Essential Space app from Google Play Store to access all new features.
Go to Settings, then System and tap System Update to check for the update. The download is around 3 to 4 GB and installation takes about 20 to 30 minutes. Your phone will restart a couple of times during the process. Never download the update from unofficial sources as it may contain malware. If you don’t see the update yet, wait patiently as Nothing is rolling it out in phases.
User Feedback and Real World Experience
The response to Nothing OS 4.0 for Nothing Phone 3a has been mostly positive. Users praise the smooth animations and refined interface calling it genuinely well optimized. The Glyph enhancements and AI Playground features received appreciation from the community.
Some users report battery drain issues with 50 percent loss in 4 to 5 hours compared to Nothing OS 3.2. Nothing is aware of these battery concerns and will likely address them in future patches. Lock Glimpse feature is now optional after user feedback which shows Nothing listens to its community. Overall sentiment is 80 percent favorable with users excited about the polish and innovation.
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