Nothing has announced the release of Nothing OS 4.0 Open Beta based on Android 16 for four of its smartphones, including the brand’s latest flagship – Nothing Phone (3). Nothing OS 4.0 Open Beta: Supported PhonesNothing OS 4.0 Open Beta has been released for:Nothing Phone (3)Nothing Phone (2)Nothing Phone (2a)Nothing Phone (2a) PlusNothing’s latest mid-rangers, the Phone (3a) series, is missing from this list but the brand says it will receive the open beta version later this month, with a “few new exciting features.”Nothing OS 4.0 Open Beta: New FeaturesWith Nothing OS 4.0 Open Beta, the Nothing Phone (3) gets the the AI usage dashboard in Essential Space, giving you transparency over large model activity. 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.”Read More: Nothing Ear Open Launched in India: Things to KnowNothing OS 4.0 Open Beta: How to Install? Nothing says that the Open Beta version can be installed till October 14, post which you will not be able to join the beta. If tapping “Go to Update” fails, check manually by heading to Settings > System > System updates and check for updates.