Last year WhatsApp added the option to transfer chat history from iOS to Android, beginning with Samsung (in August) and ultimately making it accessible for all Android 12 gadgets (in October). Moving the alternate way, from Android to iOS, is going into beta testing today.
This implies that it will be some time before the option is accessible to everybody. Yet, assuming you are running WhatsApp beta, here are a few key requirements:
Android 5 (Lollipop) or later, WhatsApp (Android) 2.22.7.74 or later
iOS 15.5, WhatsApp (iOS) 2.22.10.70 or later
Same phone number as on the old phone
Conceivable just during the initial setup of the iPhone
The transfer is done using the Apple’s Move to iOS app and happens locally. This implies the old and new phones should be on a similar Wi-Fi network (a Wi-Fi hotspot works as well) and both should be plugged into a charger.
Note that the information on the Android gadget will not be wiped automatically, you can do that without anyone else’s help subsequently. Likewise, while messages will be moved, peer to peer payment messages and your WhatsApp call history won’t be continued to the iPhone.