How to Log Out of WhatsApp on All Devices

WhatsApp has two different kinds of session, and "log out everywhere" means something different for each. Linked devices — computers, tablets, the web version — are disconnected in a couple of taps. The primary phone is trickier: there simply is no log-out button there.

The short answer

Open Settings → Linked devices, tap the entry you want and choose to log out. Some versions have a separate button to log out of all devices at once; if yours doesn't, disconnecting them one by one takes about as long.

The primary phone isn't on that list: the account only leaves it when you sign in on another device or delete the app.

The primary phone and linked devices

The primary phone. The device the number is registered to. There's only one, and signing in on a new phone automatically ends the session on the old one.
Linked devices. A computer, laptop, tablet or the web version. You can have several — the exact number depends on the app version. They work independently and don't need the phone online at all times.

One timing detail: if the primary phone stays offline for a long stretch, linked devices eventually disconnect on their own. That's a safeguard rather than a fault, and it isn't a way to log out everywhere — it takes roughly a couple of weeks to kick in.

Disconnecting linked devices

Open WhatsApp on your phone and go to settings.
Choose the linked devices section — every active connection is listed there with the time it was last active.
Tap the device you want to disconnect.
Confirm the log-out.

It takes effect immediately: the computer or browser drops back to the QR-code screen and that session's local data is removed. Your conversations are unaffected — they stay in the account and on the phone.

How to read the list of connections

Each device shows its type and platform — a browser with its operating system, or the desktop app — plus the time of its last activity. That's usually enough to separate your own sessions from anyone else's.

The names come from the client itself, so an entry can look unfamiliar even when it's your own computer: browsers are sometimes identified as something you don't recognise. Judge by the combination rather than the label — an unfamiliar platform plus activity during hours you weren't working is reason enough to disconnect it without further investigation.

Disconnecting costs nothing: if the entry turns out to be yours, you simply scan the QR code again.

Logging out in the web app and on a computer

If you're sitting at that computer, it's easier to log out right there: the menu in the app or web version has the option. That's the convenient route on someone else's machine — no need to reach for your phone.

When the computer is back at the office or at a friend's place, end the session from your phone instead; the result is the same. Which is exactly why the linked devices list is worth checking after any stint on a computer that isn't yours.

Why there's no "Log out" button on the phone

A WhatsApp account is tied to a number and a specific device rather than to a login-and-password pair you can close in one click. Hence the missing log-out: to free the phone, you either delete the app or sign in with that number on another device.

The practical upshot for anyone selling or giving away a phone: delete the app, and better still factory-reset the device. The account stays yours, and signing in on the new phone works the usual way, with your number and a code.

If you don't have the phone

The phone is nearby but not yours. Sign in with your number on another device — the old session ends automatically.
The phone is lost or stolen. Block the SIM with your carrier first so the login code can't reach anyone else, then restore the number and sign in again.
You need it stopped right now. WhatsApp support accepts a request to deactivate an account when a device is lost — messages stop being delivered until you sign in yourself. The procedure is described in the platform's help centre.
Linked devices with no phone. They can't be disconnected remotely without access either to the phone or to the device itself — deactivating the account is what's left.

Signs that someone else has connected

an entry in the linked devices list you don't recognise;
a last-active time that doesn't match your own use;
messages turning up read before you opened them;
outgoing messages in your chats that you never wrote.

The response is straightforward: disconnect every linked device, turn on two-step verification and attach an email to it, then check your chats and groups for activity that wasn't yours.

What to do afterwards

Turn on two-step verification. Without it the account is protected by an SMS code alone, and codes can be intercepted.
Check the list again a day later. If an unfamiliar session reappears, someone has access to your phone or your codes.
Set a screen lock. Most unwanted connections start not with hacking but with an unlocked phone left on a desk.
Separate personal from work. When client chats run on your personal number, colleagues' computers and shared workstations inevitably end up in your linked devices list. Work like that deserves its own profile — the WhatsApp accounts available on Fire Accs cover it, and your personal number never gets connected to someone else's hardware.

Common mistakes

Closing the tab instead of logging out. The web version stays authorised after the browser is shut.
Treating app deletion as logging out. It works for the phone, but linked devices carry on regardless.
Changing your number to kill unwanted sessions. A number change doesn't disconnect linked devices; that's a separate section.
Ignoring an unfamiliar entry. The device name is supplied by the client and can look perfectly innocent.
Turning to "session removal services". Linked devices are managed only inside the app; everything else is a way to obtain your login code.

FAQ

Are chats deleted when I log out of a linked device?

That device's local data is removed, but the conversations themselves stay in the account and on your phone.

Will the person know I ended their session?

They get no notification, but their screen asks them to reconnect — which is hard to miss.

How many devices can be linked at once?

Several, and the exact number depends on the app version. It's more practical to keep only the ones you actually use.

Do linked devices work while the phone is switched off?

Yes, for a while. But if the phone stays offline for long enough, they disconnect automatically.

Is there a single button to log out everywhere?

Some versions have one in the linked devices section. Where there isn't, disconnecting one by one gives the same result.

What happens to notifications after logging out?

They stop arriving on the disconnected device and keep working normally on the phone.

The list is empty but I'm still suspicious — what now?

Then there are no outside sessions and the phone itself is what to look at: an unlocked device in someone's hands, access to your backup, or SMS codes being forwarded. Set a screen lock and turn on two-step verification.

Does switching phones disconnect old linked devices?

Not necessarily. After moving to a new phone, the linked devices list is worth checking separately.

The takeaway

Linked devices are disconnected in the section of the same name, and it's worth doing after every stint on a computer that isn't yours. The primary phone isn't on that list: the account leaves it only with the app or when you sign in elsewhere. And with no access to the phone at all, the order reverses — the SIM with your carrier first, then signing in, and only then clearing the list.