A portable device transmits a payment card number to a merchant machine. The portable device generates an encrypted first message comprising a request to get information about a financial transaction. A packet filter maps the encrypted first message to a pre-established non-GBR bearer. The portable device generates a fourth message by encrypting the encrypted first message and transmits the fourth message. The portable device receives and decrypts a second encrypted message. The portable device decrypts the decrypted second message and sends financial transaction information to a display.