2TelNumber is an app that allows you to get a second phone number in your Android phone, making it possible for you to make international calls and receive SMS and notifications from international numbers. The app also allows you to choose from several countries and regions to get a number that works for you.

It allows you to switch between numbers with a tap, and it also offers the option of switching at any time while making a call or sending a message.

You can also make calls to several countries and regions for much lower charges than what you're used to paying.