What is the difference between Phone calling and in-app voice calling?

Phone calling is a traditional telephone call, when the caller and the callee or both are using a phone line using a mobile device or a land line phone.

In-app voice calling is a pure software-based call, where audio and/or video information is transmitted over the Internet between caller and callee. Once integrated in your app, users can make calls from their computers or mobile devices.

Learn more about Sinch’s Calling products.