Your Free WhatsApp App Cannot Remember a Cart After a Device Switch
Five linked devices share one inbox on the free WhatsApp Business app. That sounds like enough coverage for a solo seller working from a phone and a laptop. It is, until a buyer who already chose a product switches devices mid conversation.
What multi-device sync actually shares
What does linking a second device to your WhatsApp Business app actually give you?
It gives you the same inbox on another screen. Up to five devices can stay linked, each showing every message as it arrives. What it does not give you is a separate layer that remembers which buyer already picked a size, a colour or a delivery city. The inbox is shared. The context is not. There is no remembered thread underneath it.
The buyer who already told you everything
Picture the ordinary case. A buyer messages about a dress, names the size, confirms stock, agrees a price, and gives a delivery address in Petaling Jaya. Then their phone changes network and the next message shows up on a different linked device. Nothing was lost on the buyer's side. From yours, the thread looks new. You ask the same three questions again. The buyer answers them again, a little more slowly this time.
The cost after October 1
That gap used to be free to fix. From October 1, 2026, Meta's updated pricing treats a free-form reply sent outside a template, inside the 24-hour service window, as a billable message. Reconstructing a cart the buyer already gave you is not a courtesy anymore. It is a paid message, every time.
Five synced devices, one shared inbox, so surely nothing important gets lost when a buyer switches phones?
No.
Not on their own. The app was built to keep one inbox visible everywhere, and it does that well. It was never built to keep one buyer's cart attached to their name across a device switch.
What one remembered thread looks like instead
A sales assistant holds one remembered thread against the seller's own number, not against whichever device happens to be open. Product, size, stock, price and delivery city stay attached to the conversation itself. Whatever device you are holding when the buyer's next message arrives, the order is already exactly where they left it. No recap. No repeated question. No fresh service-message charge for ground you already covered.
Why YunaChat wins
YunaChat is not a second inbox bolted onto your existing devices. It is one remembered thread that travels with the buyer, not the screen. Exact product, size, stock, price, payment preference and delivery city stay in that single conversation from the first message to the confirmed order, on the same WhatsApp number your buyers already have saved. See pricing and keep the next device switch from costing you a sale.
Keep every buyer's cart remembered
