GSM Control is a universal app that lets you send SMS messages to almost any kind of device that uses GSM. It's the best and easiest way to send SMS messages from your Android device. The app is compatible with most of the newer Android devices, and it works with all of the major mobile carriers.

The app supports multiple numbers and you can add as many numbers as you want. You can even add your own number and use it as a custom number for your SMS messages. The app has an easy-to-use interface that makes sending SMS messages a lot easier and more convenient.

You can send SMS messages to your friends and family, as well as to public services like buying bus tickets, paying public parking, taking part in sms voting, chats, etc. It's the best way to communicate with people who use GSM.