Step 1. Dial *135# and press "Send" or "Call".
Step 2. Select '*' to view the other options. Then select "My Account".
Step 3. Select the number for "Balance".
Step 4. Select "My Balance".
Step 5. A pop-up message will appear on your screen with your balance amount.
You can also simply dial *120# to view your credit balance:
Step 1. Dial *120#.
Step 2. A pop-up message will appear on your screen with your balance amount.
Please note: Screenshots are included as a guide - Currency/Figures may differ depending on where you are located.