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Keep your phone online for reliable delivery

Your linked phone must stay on and connected.

Your linked phone must stay on and connected for messages to send reliably.

Tips

• Keep the phone charged (or plugged in) and on Wi‑Fi or mobile data.
• Don’t force-close WhatsApp on the phone.
• Avoid aggressive battery/data-saver modes that kill background activity.

If the phone goes offline, the device shows as disconnected until it’s back online.

Related guides

• Connect a WhatsApp device
• Monitor number health & Ban Risk
• QR code won’t scan or keeps expiring
• How many WhatsApp numbers can I connect?
• Remove or replace a connected device

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