UK-based smartphone manufacturer Nothing has officially launched the stable version of Nothing OS 4.0, marking a significant milestone in the company’s software evolution. The highly anticipated update, built on Android 16 and branded as “Flow,” begins rolling out globally today after months of open beta testing.
What is Nothing OS 4.0?
Nothing OS 4.0 is the company’s latest user interface based on Android 16, which transitioned from open beta testing that began in September to its stable release on November 21, 2025. The update represents Nothing’s continued commitment to delivering a minimalist, intuitive mobile experience enhanced by artificial intelligence capabilities.
The company’s tagline for the release—”Let your phone bring flow to your life”—emphasizes the update’s focus on seamless, context-aware functionality that integrates smoothly into users’ daily routines.
Features & Improvements
Nothing OS 4.0 introduces several standout features designed to enhance daily smartphone usage. The update includes an AI Usage Dashboard that gives users complete control over how apps utilize artificial intelligence, addressing growing privacy concerns among smartphone users.
The update also brings Extra Dark Mode with deeper blacks for comfortable nighttime viewing, along with a redesigned Pop-Up View that enables floating windows for improved multitasking. Users will notice enhanced quick settings with a 2×2 tile layout and two additional lock screen clock styles for better personalization.
Performance optimizations include faster app launch times and smoother system responsiveness thanks to system-level app optimization. The update also features Essential Apps—user-created widgets that can be shared through the Nothing Playground portal
Supported Devices
Expected devices to receive Nothing OS 4.0 include the July 2023-released Nothing Phone (2), March 2024-released Nothing Phone (2a), July 2024-released Nothing Phone (2a) Plus, March 2025-released Nothing Phone (3a) and Nothing Phone (3a) Pro, July 2025-released Nothing Phone (3), October 2025-released Nothing Phone (3) Lite, July 2024-released CMF Phone 1, and the April 2025-released CMF Phone 2 Pro.
How to Update
Nothing phone owners with eligible devices can check for the Nothing OS 4.0 update by following these steps:
- Open Settings on your Nothing device
- Navigate to System
- Select System Update
- Check for available updates
Availability
Nothing OS 4.0 is rolling out globally starting November 21, 2025. The update is free for all eligible Nothing and CMF devices. Users are encouraged to back up their data before installing the update and ensure their device has sufficient battery life and storage space.
The release of Nothing OS 4.0 demonstrates Nothing’s commitment to providing timely software updates and long-term support for its devices. The company has previously announced extended software support policies, including seven years of updates for the Nothing Phone (3).
