A free program for Android, by 3CX.

Opting for another video conferencing app? Give 3CX Video Conferenc‪e a try. With this app, you’ll be able to host high-quality video conferences for lectures, business meetings, and workshops without renting or reserving a venue. You can raise your hand if you want to ask questions, comment on a presentation. Alternatively, you can use the react function to show how you feel about the meeting. 

3CX Video Conferenc‪e also features a chat option for interacting with guests and colleagues. This comes in handy for when you’re too shy to talk. The app is available for Android phones, making it a convenient tool for remote or on-the-go professionals.