USSD code to check Balance (AT+UCSD)

Using Arduino Networking, Protocols, and Devices
#1

hi

how can I get sim card balance by gsm/gprs A6 module?

I used the following AT, but does not work and result in unreadable characters (by AT+CSCS=“GSM” -“UCS2” - “PCCP936”) or numeric code (by AT+CSCS=“HEX”).

note : my sim card language is English.

I used all four AT+CSCS that is supported by A6.but I can not get answer of AT+CUSD as :

+CUSD: “English-message”.

why?

AT commands:

AT+CMGF=1 AND/OR 0

AT+CSCS="GSM" AND/OR ["UCS2 - "GSM" - "PCCP936"]

AT+CUSD=1,"*140*11#",15

WHERE : 14011# is our request code

Another AT commands such as (AT,AT+CMGF,AT+CSQ and …) works perfectly.

please clarify me…

#2

There is not anyone who worker with GSM/GPRS A6 module?

#3

Is there anyone who has used GSM/GPRS A6 Module (Ai-thinker) to check USSD by +CUSD?

please let me know...

#4

Hi ghasem_eng

Did you solve this? I have same problem.

Please let me know. Thanks

#5

Mr. Google and "check USSD by +CUSD" came up with this link among others.

https://www.raviyp.com/embedded/190-sim900-sim800-ussd-code-at-commands-working-example

#6