The Facebook Messenger app is full of texting, games, payment, and other features. At the time of writing, WhatsApp lets you add up to four people to a single group call. Like any modern app, WhatsApp also supports group calls. Just tap on the video button at the bottom of the screen, and you're good to go. What I love about it is that you can switch to video call directly while on a voice call. WhatsApp is one of the most popular means to communicate in most countries, thanks to its easy-to-understand interface and the option to make video calls over the internet.
