This is the part of the log when i am trying to send an ussd request:
D/RILC ( 1035): [0100]> SEND_USSD (*141#)
D/RIL ( 1035): onRequest: SEND_USSD
D/AT ( 1035): AT> AT+CUSD=1,"*141#"
D/RILJ ( 1305): [0101]> SET_MUTE false
D/AT ( 1035): AT< +CUSD: 2
E/RILC ( 1035): invalid response length 1 expected multiple of 4
D/AT ( 1035): AT< OK
D/RILC ( 1035): [0100]< SEND_USSD
D/RILC ( 1035): [0101]> SET_MUTE (0)
D/RIL ( 1035): onRequest: SET_MUTE
D/AT ( 1035): AT> AT+CMUT=0
D/RILJ ( 1305): [0100]< SEND_USSD
D/AT ( 1035): AT< OK