Yes, you really can make free phone calls using the internet. The apps I'll mention come in two types: Some only work if the other person has the same app, while others let you call any number ...

Turn on the hotspot in Settings to share your phone's internet connection with other devices This article shows how to enable ...

Android may soon open Captive Portals in an Android Custom Tab instead of a WebView, making it easier to access some public Wi-Fi networks.