A free program for Android, by Blacktelio.

If you are looking for a quick and easy way to check the status of a phone number, Phone Checker is here to help. This utility is a safe and reliable way to find out the status of a specific number.

What is Phone Checker?

It is a simple and professional tool that can check the busy status of a phone number in real-time. You will not need to enter any special details, just enter the number to be checked and get the results. It is very easy to use.

How does it work?

When you run the app, it will automatically try to make a call to the recipient and check if they are busy or not.