Back in the day, a phone was just a phone. Now, it’s a veritable computer in the palm of your hand, part tool and part entertainment, with the ability to perform a multitude of interesting and advanced functions. It does still make calls, of course, but even that aspect is a bit different than how things used to be because of the increasingly popular technology called VoIP.

In technical terms, VoIP is a broadband phone service that uses the internet instead of a public switched telephone network (PSTN) for things like voice calls and video conferencing.