19.9 SIM Toolkit
The SIM Toolkit, accessible via Advanced > Misc Settings > SIM Toolkit, supports two
functionalities, USSD and SMS.
USSD
Unstructured Supplementary Service Data (USSD) is a protocol used by mobile phones to
communicate with their service provider’s computers. One of the most common uses is to query
the available balance.
Enter your USSD code under the USSD Code text field and click Submit.
You will receive a confirmation. To check the SMS response, click Get.
After a few minutes you will receive a response to your USSD code
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