WhatsApp historically chained you to one phone while everything else lived happily on ten devices. The linked-devices era changed that: companion phones and tablets now run full WhatsApp alongside your main one.
Updated August 15, 2026, after a fresh review, with updated visuals and links.
Here's the setup, what does and doesn't sync, and the session limits nobody mentions until they hit them.
Short version: Understand the companion model first, then install and choose 'link as companion'. Details below.
Step by step
- Understand the companion model. Your primary phone holds the account, but companions now operate semi-independently: each device syncs your chats and keeps working when the main phone goes offline (for stretches, not forever, typically around two weeks before requiring a check-in). It is genuinely a second phone's WhatsApp, not a shadow.
- Install and choose 'Link as companion'. On the second phone, install WhatsApp, and on its registration screen choose to link as a companion device instead of registering the number again. It displays a QR code, the handshake token.
- Scan from the primary phone. Main phone: WhatsApp, Settings, Linked Devices, Link a Device, scan the companion's QR. Within a minute the second phone downloads your chat history and operates fully: send, receive, voice notes, status.
- Tablets and computers follow the same door. Android tablets run the same companion flow; iPads and Macs and Windows PCs use WhatsApp's apps or web.whatsapp.com with the identical QR dance. One account, scattered politely across your hardware.
- Know the limits and quirks. Companion devices cap around four besides the main phone; live location and broadcast lists stay primary-phone features; security codes re-verify per device. If something seems missing on the second phone, these lines explain it.
- Manage sessions like keys. Linked Devices lists every attached machine with last activity: review monthly, log out anything you don't recognize or no longer use. Sold the old tablet without unlinking? This screen is the fix.
Pro tips without the attitude
- Work-life split: companion phone carrying both WhatsApp and your SIM sits great for travel, the main number follows you without SIM juggling.
- Battery reality: companions sync actively and sip gently, keep them in your charging rotation like any phone.
- Pairing codes offer an alternative to QR on newer versions when camera scanning misbehaves.
Questions people ask
Can two phones both get calls?
Calls reach the primary and supported companions; behavior has expanded steadily, and missed-call notifications reach every linked screen regardless.
Is it secure on all devices?
Yes: each linked device holds its own encryption keys, end-to-end protection spans the set, which is why verification prompts appear during pairing.
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One QR scan per device and your conversations live wherever your hands happen to be, without a single logout.
