The Tigo Business Push To Talk app, also known as PTT, is an instant, free-to-download app that turns your Android smartphone or tablet into a walkie talkie. It is a professional service that can be used as a substitute for, or as a modern complement to, traditional two-way radios.

It works in the same way as your typical walkie talkie, so if you already have one, you can just start using it. If you don't have one, it's easy to get one. All you have to do is download the app, press the button, and hold it. You will then be able to talk to other users who have also downloaded the app.