WhatsApp is set to end support for the iOS 10 and iOS 11 versions of Apple’s mobile operating system, which requires all users to be running at least iOS 12 after October 24, 2022.
This means that iOS 10 and iOS 11 users, who will primarily own the iPhone 5 and iPhone 5C, will no longer be able to use the encrypted chat service after the specified date.
WhatsApp already tells in itself Help Center Which currently offers official support for iOS 12 or later, so it’s likely that iPhone models like the iPhone 5s, iPhone 6, and iPhone 6s will continue to be fully supported for the foreseeable future.
Users who intend to update their iPhone and use the app after the above date can back up their WhatsApp chats to iCloud and restore their chat history to a new compatible device. You can find instructions on how to do this. Here,