This decision means that there will be no new updates and security patches for owners of devices with these OS versions.
To find out whether a particular device is subject to this restriction, you need to visit the “About Phone” section (accessed through “Settings” on smartphones running the “green robot” and through “Settings” => “General” on iPhones).
Starting tomorrow, WhatsApp will be supported on operating system versions starting from
- 5.1 for Android;
- 12.0 iOS for iPhones;
- 2.5.0 KaiOS for JioPhone and all others.
To use WhatsApp updates, you need to upgrade to a more modern smartphone. If this is not done, the messenger will continue to work, but the WhatsApp team cannot guarantee security.