Nothing OS 4.0 ‘Flow’ Rolls Out November 21: Android 16 Upgrade, Eligible Phones, and New Features Explained
Nothing has finally circled a date on the calendar. As of today, November 20, 2025, the company has officially confirmed that its Android 16-based Nothing OS 4.0, branded “Flow”, will begin rolling out tomorrow, November 21 to supported phones after weeks of open beta testing.9to5Google+2Android Authority+2 For Nothing phone owners, this is the big platform jump they’ve been waiting for: a major Android version update bundled with a visual refresh, deeper AI smarts you can actually control, and a more polished, minimal UI.