I don't know if i'm in the right forum,
I want to close ussd session using AT Commands on nokia mobile : at+cusd=2
but it returns Error and the command at+cusd=? on nokia mobile returns (0-1)
not like in a sonyericsson mobile,it returns (0-2) : it means that it supports 2 value.
Is there a solution to close ussd session in nokia mobile using at commands