Transfering what threads and data across Android and iOS was easily the most-requested WhatsApp feature, and it is finally possible for users to get it done automatically. Note that the call history or payment messages won’t be transferred over.
When transferring WhatsApp data from Android to iOS, users can import WhatsApp’s chat history via the Move to iOS app. The WhatsApp integration was in beta for some time, but everybody can now access it. WhatsApp has a dedicated help page that explains the process, but essentially:
To start the Android to iOS transfer, follow the prompt on the Move to iOS Android app and execute the requested actions on the iPhone. Once the transfer is finished, activate the iOS device, and your Whatsapp chats will be there. The data remains on the Android device until you delete it.
Having to reset the iPhone is not ideal, but at least there’s a way to get this done quickly and without paying for a 3rd party app. Alternatively, you could backup your data to one of the cloud options available natively in WhatsApp.
https://twitter.com/WhatsApp/status/1549801508925054976