Jose Queiroz asked 5 years ago
I’m a beginner in programming with arduino and sim900 card, and i need get the sim card balance without having to remove the card to read on the phone. i am using sim900 with arduino to send messages from a remote home in the field. I would like someone to help me
1 Answers
Sara Santos Staff answered 5 years ago
Hi Jose.
I haven’t tried it. But basically, the Arduino needs to send a sequence of USSD short codes with AT commands to get the balance.
Here’s an example of the AT commands you need to send to get the balance:
https://m2msupport.net/m2msupport/ussd-how-to-send-ussd-short-codes-with-at-command/
Let me know if you need further help.
Regards,
Sara