There are several physical keypad phones (such as the Cat S22 Flip or various Qin devices) that run modified versions of Android, allowing users to download the official, secure, and fully supported WhatsApp application.
While the files exist as historical artifacts of mobile modification, the WhatsApp service has undergone massive architectural changes over the last decade. whatsapp vxp
Connect your feature phone via a USB data cable or slip your external into a standard reader. There are several physical keypad phones (such as