You are able to dial *144# to check your 4G Broadband Account Balance. Ensure it is the same number associated with your 4G Broadband device.
Step 1. Dial *144#send.
Step 2. Select "Check 4G balance" which is option 1.
Step 3. Select option 1 which shows your Service Number.
Step 4. You will then receive a pop-up advising you of your balance and your last invoice amount.