21 May 2021
UPDATE (April 6th, 2021):
It seems like WhatsApp has finally started testing the ability to sync chats between Android and iOS devices. It means if you are someone who is looking to switch between ecosystems or has to switch quite regularly, it will become a lot more convenient for you to keep your chats intact. The feature has currently be spotted by the WABetaInfo but has not been able to use yet. It seems like the feature is currently limited to internal testing.
Original (August 10th, 2020)
WhatsApp is one of the world's most popular instant messaging applications with billions of users. It offers different features to improve the whole communication experience but there has been one particular that users have been asking for a long time. It is the support for syncing WhatsApp chats and data between Android and iOS. It seems like the team has finally listened to those requests.
As shared by WABetaInfo, the development team is busy working on adding multiple devices support to WhatsApp. The app currently restricts users to use one WhatsApp account i.e. mobile number to one device at a time. The new feature will increase this limit to up to four devices. Since this would mean a user should be able to see his chat history on all devices for seamless user experience, the team has also started developing cross-platform data syncing functionality i.e data syncing between Android and iOS as well as other platforms.
The report mentions that since WhatsApp chat data is usually huge (running into GBs) as it comprises of media files, data syncing functionality is limited to WiFi connectivity. It means a user will need to have an active WiFi connection if they want to proceed with the data syncing.
There is also a possibility that once multi-device support becomes available, users will not have to rely on an active internet connection on their phone for using the WhatsApp web. Since the whole process is still in the development stage, it is hard to say exactly when we will get to use them in the stable version.