Nothing OS 4.0 Open Beta [Update: OS4 Beta downloads have now ended for all devices. Enrolled testers are encouraged to continue sharing feedback!] We’re excited to bring you the Nothing OS 4.0 Open Beta. This is your chance to try out the newest features from Nothing OS alongside Android 16 before the official release. Here’s what you can expect with Nothing OS 4.0 Beta: ‎ 📱 Phone (3) Phone (3) introduces the AI usage dashboard in Essential Space, giving you greater transparency over large model activity. This update also includes general improvements and bug fixes, with better lock screen and AOD performance, optimised brightness behaviour, enhanced camera stability, improved Bluetooth stability and compatibility, stronger Wi-Fi connectivity and network stability, and overall system stability enhancements. ‎ 📱 Phone (2), (2a) & (2a) Plus These devices now include the “Stretch” Camera preset, created with photographer Jordan Hemingway, which enhances photos with rich shadows and extended highlights for a more distinctive look directly from the Camera app. In addition, this update brings system-level app optimisation to improve startup speed, available under Settings > Apps > App optimisation. ‎ Other new features 🟢 Pop-up View with two floating icons for faster switching ⏱️ Two new lock screen clock faces ↔️ 2×2 Quick Settings tile support 🌑 Extra Dark Mode (Settings > Display > Dark theme > Extra dark mode) ‎- ✨ Essential Apps & Playground Essential Apps are now live. You can create widgets with AI and share them in Playground alongside Camera Presets and EQ Profiles. With Nothing OS 4.0, Phone (3) supports up to 6 widgets and other models up to 2, a temporary limit set to keep performance smooth. Learn more in our Essential post. - Notes Please back up your data (photos, call logs, contacts, etc.) before installing any of our Betas. Your device may temporarily heat up and consume more power after updating. This will return to normal shortly after installation. How to join: Make sure your device is on the latest stable build, go to About phone > banner. You need to have the following versions installed to take part: Phone (3): Metroid-V3.5-250911-2112 Phone (3a): Asteroids-V3.2-251013-1406 Phone (3a) Pro: Asteroids-V3.2-251013-1406 Phone (2): Pong-V3.2-250917-1451 Phone (2a): Pacman-V3.2-250904-1648 Phone (2a) Plus: PacmanPro-V3.2-250904-1704 ⚠️ Disclaimer: Our Open Beta OTA servers have now closed for Phone (2), (2a), (2a)+ and (3). (3a) and (3a) Pro downloads are still available here. Then: Download our Beta Updates Hub .apk and install it from your Downloads folder. Go to Settings > System > Nothing Beta Hub. Tap "Join Beta" to sign up. After successful registration, Tap "Go to Update" to upgrade. Tip: If tapping "Go to Update" fails, check manually by heading to Settings > System > System updates and check for updates. Once installed: We encourage you to share your feedback to help us continue to refine the experience. Your feedback can be shared via Settings > System > Feedback, or join the discussion here on nothing.community via our dedicated threads. ⚠️ Disclaimer: This is Beta software and may interfere with your data. It could also require a factory reset. Please back up your data before updating. - Rolling back to Stable If you need to return to Nothing OS 3.5 for any reason, follow these steps: Download the relevant rollback package: Phone (3) Phone (3a) Phone (3a) Pro Phone (2) Phone (2a) Phone (2a) Plus Go to Settings > System > Nothing Beta Hub Tap Import file and select the package. Follow the on-screen instructions. Tip: If you see an error, create a folder called Documents in Internal Storage and try again. ⚠️ Disclaimer: Rolling back will factory reset your device and erase all data due to Google’s rollback rules. Please back up everything before proceeding. Nothing cannot accept responsibility for issues caused during rollback. For help, contact customer support. Other Open Beta Release Dates The Open Beta for Phone (3a) Series has now arrived, read more about it in this dedicated post.

Too many users pressed Join at the same time 😅 The heavy traffic crashed our server. Please try again, and make sure you’re joining with the same build number mentioned in the post. Thanks!

Nothing OS 4.0 | Open Beta

onstart_music

Jiří Mrázek I have the same issue for Phone (2)

EDIT: just retried, it works now!

Sickchild72

Let’s go

AshishChandra

Same error on my 2a also, 🙁

CMF1_hacker

Perhaps I return when it’s less busy

Paszczak1991

Downloading 🙂 Poland

AshishChandra

Same error on my 2a also, 🙁

CMF1_hacker

perhaps I’ll return when the pub is less rammed

FahadAlharthe

AlphaTauri in October in the discord announcement

KuvamAulakh

Guys if you remember there’s one 3a pro as well

Syssm

On 2a Plus 🍁

Sickchild72

Arcalius

CMF1_hacker Good plan…down the hay field for a kick about?

aaritgupta891

Will beta come to the CMFs?

LleGozzLand

Rob ⚡️ Join fail for NP2 🥹

Antonio_Luis

Jiří Mrázek I’m getting the same thing

Zero

After many tryes, eventually worked on 2a

marax

Jiří Mrázek try later. It is downloading for me on my phone 2

Antonio_Luis

Seems like everyone with an EEA build is having this issue. Let me try my Global one to confirm. Cause my EEA one isnt working either. @Rob ⚡️

Mudassar

Those who are unable to do it and getting an error saying “you are not in the beta program, please refer to community post” click on that “community” link. Read the post once and try again. That worked for me.

ShreyanshPatni

Rob ⚡️ what about CMF Phone 1

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