On Android, Knock Knock works on your lock screen, while on iPhone you have to be in the app to see the video preview. This is because Android provides an API for apps to take over the lockscreen.

If you're looking to video chat, these apps can help stay connected with HD video and extra features too. Sarah Mitroff has worn many hats at CNET, including Senior Mobile Editor and Managing Editor ...

Using video calling platforms is about as easy as it can get these days. You can use them on computers, mobile devices, and even tablets. Video calling is popular and widespread enough that you even ...

We live in rather challenging times. Times where you’re advised to avoid social contact for health reasons. You still have to maintain contact with your friends and family, though. So, doing that over ...

Google's new app, Duo, is a simple video-calling service that's available for Android and iOS today. Alongside the upcoming messaging app Allo, it's one of two communication apps Google announced ...

WiFi calling as a concept has existed for quite some time now. However, the situation is significantly different than it was a few years ago. Today, there are several services and apps for devices ...

WhatsApp has announced that more than one billion users will be able to make video calls on iPhone, Android and Windows Phone devices “in the coming days.” And to work out all the kinks, WhatsApp has ...

After unveiling Duo at its I/O conference in May, Google has finally launched its free cross-platform video calling app on Android and iOS today. Duo lets you make one-on-one video calls with anyone ...