The most-used feature of Facebook Messenger on Android was never the stickers; it was the chat head — the round bubble floating over your screen so you can answer a message without leaving the map, the video or the spreadsheet you were in. WhatsApp, owned by the same company, has never had it. According to WABetaInfo that is changing, with notification bubbles.
How it will work
When a message arrives while you are in another app, a bubble appears showing the contact's or group's picture with a small WhatsApp badge. Tap it and a compact chat window opens on top of whatever you were doing; read, reply, dismiss, and you are back. The bubble can be dragged or flicked away. The point is to remove the round trip of leaving an app, opening WhatsApp, finding the chat and navigating back — which for many people happens dozens of times a day.
The part worth knowing: what this is built on
WhatsApp is not inventing anything here. Android has had a system-level Bubbles API since Android 11, built precisely so messaging apps can offer chat heads. Messenger uses it; Telegram and Google Messages support it. WhatsApp adopting it late is a product decision finally made rather than an engineering feat.
But the reason that API exists at all is the interesting part, and it is a security story.
Before it, floating windows were built on a general permission that let an app draw over any other app. That capability is enormously useful and enormously dangerous, because an app that can paint pixels on top of another app can paint something that looks like part of it. The attack this enables is well documented: draw an invisible or disguised layer over a legitimate screen so that a tap the user believes is going to their banking app goes somewhere else, or so that a permission dialog is covered by a harmless-looking button positioned over the Allow. Android malware families used exactly this to steal credentials and approve permissions on the user's behalf.
Google's response was to restrict the broad permission and offer a narrow, system-controlled replacement. A bubble is drawn and managed by the operating system rather than by the app, so it cannot be used to overlay anything else, cannot be made invisible, and cannot be positioned over a sensitive dialog.
The practical consequence for you is that bubbles obey controls you already have. If you find them intrusive, Android's notification settings for WhatsApp will let you turn them off per conversation or entirely — because the OS, not WhatsApp, decides whether a bubble appears.
Android first, iPhone probably never like this
The rollout is to Android beta users first, and WABetaInfo suggests iPhone users could get something later. It will not be the same feature.
iOS has no equivalent API and no concept of one app drawing over another; the sandbox forbids it, which is a deliberate design position rather than an oversight. Apple's nearest equivalents are all mediated by the system and live in places the system controls — notification banners, Live Activities, the Dynamic Island. An iPhone version of this would have to be built out of those, which means something that surfaces a conversation without ever floating a window over a running app.
Is it a good idea?
For anyone using WhatsApp for work — the rider coordinating drops, the shop owner answering customers while managing stock in another app — bubbles remove real friction many times a day. That is a genuine saving and the case for the feature.
The honest counter-case is that the friction was doing something. Leaving an app to reply is a small cost that makes you decide whether the message is worth it; a bubble removes the decision and makes every message a candidate for an immediate answer. Returning to a task after an interruption is reliably more expensive than the interruption itself, which is why "it only takes a second" is the wrong way to evaluate a feature like this.
The sensible setting, once it arrives, is selective: allow bubbles for the two or three conversations that genuinely need an instant reply, and leave the family groups in the notification shade where they belong.
