[ENG] 14.1. [DKSF 54.3 IU] How to Know a Balance on a SIM Card?
To know the balance on a SIM card of a device that is installed in the slot of a built-in GSM modem, there is a need to go to the page «SMS» of a device web interface:
In the section «GSM SETUP», there is a need to specify a USSD code to request a balance corresponding to a cellphone operator.
In the section «USSD REQUEST», there is a need to click the button «Send USSD». In several seconds, in the field «Reply on USSD Request», the information about a balance on a SIM card will appear.