WhatsApp messages not working on cellular Apple Watch SE 3

WhatsApp requires a linked phone for cellular communications. The Watch app allows you to use it without pulling out your iPhone, but it still needs to be within Bluetooth range. That is similar to how SMS messages works, where you also need an iPhone within range. With iMessage, it just needs a data connection over cellular, so the phone is not necessary.

The difference is the bands that cellular providers use.

• The "voice" band is used for SMS and phone calls. WhatsApp uses the "voice" band.
• The "data" band is used for internet connections. iMessage uses the "data" band.
• Cellular providers add a "data" plan to wearable devices, which is why the Apple Watch does not have a phone number where you can use that number to make/receive phone calls. To use the "voice" band, that is done with the linked iPhone.

Did you already have a look at the developers webpage?

À propos de WhatsApp pour Apple Watch - Pages d'aide WhatsApp

Did you know that there is also a French speaking Apple Community?

You might get more responses in these forums from native speakers.

Communauté d’assistance Apple officielle

Have a look at the developers About WhatsApp for Apple Watch Support page for more details.

They will have to come up with more features, which Apple has to approve.

Est ce qu’on peut espérer un jour une nouvelle mise à jour permettant d’utiliser Whats app en cellular sans son iPhone connecté en Bluetooth à proximité ?

Il y a une vraie frustration à recevoir les notifications mais ne pas pouvoir afficher les messages et y répondre dans l’application Apple Watch…