@jkalmus I have the same issue in mr200 hardware v1. but this is available in hardware version v2. have u any info/method for upgrading this USSD feature in hardware version v1. Kindly help me.

I see a basic option of USSD in hardware version V2 of firmware in emulator . USSD is a function used to basic command to internet service provider. so iwant to use this in mr200 hardware version V1....