Zoom
Zoom faced a number of new challenges due to an unprecedented surge in users as COVID-19 forced employees to work from home and students to learn from home amid local lockdown restrictions.
Microsoft Teams
Microsoft has added a series of new video-calling features to Teams, including a Together mode which looks to provide a new way to group chat. With the new update, Microsoft Teams users will be able to view more members on the mobile's screen and also consume less amount of internet data during a video call and more.
Telegram
Telegram has rolled out a new update bringing an alpha version of video calling on both Android and iOS. You can start a video call from your contact's profile page, and switch video on or off at any time during voice calls. Like all other video content on Telegram, video calls support picture-in-picture mode, allowing you to scroll through chats and multitask while maintaining eye contact.