How to backup WhatsApp chats?

WhatsApp is rolling out multi-device support for iOS through its beta program
How to know if you’re blocked on WhatsApp?

WhatsApp is the world’s most used chat application, which is connecting more than 2 billion customers. However, the WhatsApp users know...

WhatsApp forward messages limitation
WhatsApp adds new feature to fact-check forwarded messages
WhatsApp emojis
WhatsApp to get new hairstyle, cloth design emojis
Chats transfer iPhone to Android
How to transfer WhatsApp chats from iPhone to Android?