* Dial *123# and press the "Call" button. This will display your current credit balance on the screen.
* Send an SMS with the text "SOLDE" to 1919. You will receive an SMS with your current credit balance.
* Log in to your Mobistar account online and view your balance. To do this, go to the Mobistar website and click on the "My Mobistar" tab. Then, enter your username and password and click on the "Login" button. Once you are logged in, you can view your credit balance under the "My Account" tab.
You can also check your credit balance by calling customer service at 1907.