USSD CODES ? help please

can i install ussd box? becz i want to use ussd codes like see my balance and active 4g data plans by code

using 4g/3g sim
model tl-mr6400 v5(openwrt)

Does help?

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not help
i need to include it inside the openwrt system like a ssh package

In which case, does help instead?

As with the bands - there is an SMS app from the same author that allows sending USSD.