There are countless video calling apps available, but we've picked out four of the most popular: Apple FaceTime, Facebook Messenger, Skype and WhatsApp.Īll four services work on smartphones (FaceTime only works on Apple devices, though). These plug into a USB port and sometimes ship with additional third-party software to help you tweak the picture settings. If you're using a computer, you'll need to activate the built-in webcam or purchase a plug-in webcam if that's not an option.
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