WhatsApp is likely to stop its services for some iPhone and Android smartphone users starting next year. The Facebook-owned messaging app would withdraw support for some smartphones running on older versions of iOS, Android, Kai OS, etc.
The WhatsApp FAQ page states that smartphones need to be running on Android version 4.0.3 and Apple iOS version 9 and newer to be able to use WhatsApp. This means, that if your iPhone or Android smartphone is not running on the mentioned updated software versions, WhatsApp might stop working on your devices from January 2021.
KaiOS smartphone users need to update to version 2.5.1 or newer to use WhatsApp from January 2021.
WhatsApp Web video/voice call feature to roll out soon
WhatsApp Web Desktop Version is soon expected to get a video/voice call option. As Wabetainfo states, this feature was in process for the last two years and now, WhatsApp has finally started rolling out this feature for some selected users for testing purposes in some regions. It’s most likely that WhatsApp will update this feature globally in coming weeks and users may now finally be able to call using WhatsApp Web on Desktop.