WhatsApp on iOS will have the option of switching from voice to video calls and a new mentions button in group chats. WhatsApp on iOS will have the option of switching from voice to video calls and a new mentions button in group chats. WhatsApp iOS version 2.18.22 now has the option of switching between voice and video calls. A user will see the option for tapping on the video button while they are on a voice call. In the Android beta app version 2.18.4, there is a new video call switch button, which shows up during a voice call.

Source: Indian Express February 12, 2018 12:56 UTC