After previously being able to move conversations in the reverse manner, i.e. from iPhone to Android, users will no longer be able to do so.
The update addresses a long-standing WhatsApp bug in which transferring chats across the two smartphone operating systems proved difficult.
The method is based on Apple's existing Android Move to iOS app (which already helps move contacts, calendar entries, SMS messages, and more).
Select the "Transfer Data from Android" option when setting up your iPhone, then follow the procedures in the Android app.
The Android device must be version 5 or above, and the iPhone system must be version 15.5 or higher.