WhatsApp now has the ability to clone data by QR code
WhatsApp developers have added a new feature to the messenger that greatly simplifies the process of transferring user data from one smartphone to another. Its implementation will start today.
If you need to copy your chat history from one gadget to another, just scan the QR code. You no longer have to use backups stored in the cloud. It is worth noting that both smartphones must run on the same OS. After scanning the code, the data will be transferred locally. The messenger encrypts them before sending them.
Until recently, users had to back up their chat history to Google Drive or iCloud and then manually download it to another mobile device. The new feature allows you to transfer data locally, which is much easier and faster.
Source
prostomob