Error on checking balance via USSD

Question

I\'ve been trying to check my balance from by 3g modem via AT commands and seem to be stuck.

The device infomation is as follows:

Manufacturer: QUALCOMM INCO

Answer 1

Ok, I finally found the way to fix this. Apparently there was a problem in the encoding. Here is what I did:

AT+CSCS="GSM" // change character set to GSM
AT+CUSD=1,"*111#",15 // Issued balance check ussd code

It now works fine.

The default encoding was UCS2, I'd appreciate if someone can share how to convert ussd codes to UCS2 encoding in putty.

Answer 2

Have you tried issuing request by AT+CUSD=1,"*111#" ? (without last parameter) AT cmmands sometimes differ due to manufacturer implementation.