- Nothing has released the “Nothing OS B4.1-260323-1635” software update for the Phone (4a) Pro.
- This is the first update released since the device’s launch.
- The update is extensive, including new Glyph Interface features, brand-new functions, visual enhancements, camera improvements, general system optimizations, and bug fixes.
On Thursday, March 26, 2026, the British tech startup Nothing Technologies Limited (Nothing) released the official changelog for the “Nothing OS B4.1-260323-1635” software update. This update is now rolling out to the Phone (4a) Pro, the latest and premium model in their highly popular “a” series, which was announced on March 5, 2026, and goes on sale tomorrow, March 27, 2026.
This is the first software update for the Phone (4a) Pro since its release. It is a comprehensive update covering enhancements to the Glyph Interface, new features, visual improvements, camera upgrades, and various general fixes and optimizations.
The “Nothing OS B4.1-260323-1635” update for the Phone (4a) Pro is being distributed sequentially via Over the Air (OTA).
| ■ Glyph Interface Features |
| 💬 Improved “Important Notifications” UI for better usability with a cleaner design and clearer explanations. 🫧 Introduced suggestions for setting frequently interacted notifications as “Important Notifications.” 🔔 Enabled generative ringtones, allowing for unique sound and Glyph pattern combinations. 💡 Added the ability to display caller and charging progress on the “Glyph Matrix” by shaking the phone (Settings → Glyph Interface → Switch to Glyph). |
| ■ New Features |
| 🧘♀️ Added a guided breathing exercise “Breath Break” widget to the widget drawer. 📡 Support for “Live Updates” (Live Info). 🎧 Dedicated icon added to the status bar when Nothing headphones are connected. 🪀 Added a recommendation section to the “Essential Apps” widget library (enabling quick access to “Nothing Playground” to discover AI-powered community creations). |
| ■ Visual Enhancements |
| ⏲️ Introduced the lock screen clock face similar to the “Phone (3a) Community Edition.” 🪄 Added depth effect (beta) and clock face size/position adjustment features to lock screen customization. 🎴 Added a wallpaper blur effect to the lock screen password entry page. 📶 Consolidated two network signal indicators into a single status bar icon. 🔋 Adjusted the spacing of status bar icons. |
| ■ Camera Enhancements |
| 🛝 Playground Sync: Import Playground presets directly into the camera app with a single tap. 🎨 New Preset: Added “Amber” portrait preset, featuring a subtle amber hue and fine grain. 🔋 Power-saving recording: Screen automatically dims during video recording to save battery. 🌈 Image Quality: Improved exposure, color reproduction, and HDR processing. |
| ■ General Improvements and Bug Fixes |
| 📳 Optimized haptic feedback for the “Recorder” app. 📖 Optimized operational flow for dual SIM usage. 🛜 Optimized search speed for nearby available Wi-Fi networks. ⚙️ Improved overall system stability and fluidity. 📱 Fixed minor display anomalies in Quick Settings and the status bar. 🛡️ Updated Android security patch level to March 2026. |
Source: Nothing
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