You would know the importance of your chats when switching from an iOS to Android or vice-versa. This will be a first hand feature only, by WhatsApp meaning that there will be no 3rd party services involved.
This feature was brought to light by WABetaInfo, showcasing some hidden features behind the chatting service, and later it’ll aloow the users to migrate the data to and fro from both the platforms, and that’ll require both devices to have latest version of WhatsApp.
In case the user doesn’t have the latest version of WhatsApp installed that the app will tell you to update it and then proceed with the certain tasks:
Currently iOS devices uses iCloud for Chats and Media Backups and Android uses Google Drive for the same, and the rumors also suggest that WhatsApp is also working password-protecting the Chat and Media Backups.
And also linking up to 4 devices at a time through one account.