amplifier circuits and functionality necessary for demodulating and decryption of the signal and removing channel and speech coding the signal produced by the microphone 301 is amplified in the amplifier stage 302 and converted to digital form in the a d converter 303 whereafter the the signal is taken to the transmitter block 304 the transmitter block encodes the digital signal and produces the modulated and amplified rf signal whereafter the rf signal is taken to the antenna 309 via the duplexer or switch 308 the receiver block 311 demodulates the received signal and removes the encryption and channel coding the resulting speech signal is converted to analog form in the d a converter 312 the output signal of which is amplified in the amplifier stage 313 whereafter the amplified signal is taken to the earpiece 314 the control unit 305 controls the functions of the mobile communication means reads the commands given by the user via the keypad 307 and displays messages to the user via the display 307 according to an advantageous embodiment of the present invention the mobile communication means further comprises a smart card connector unit 420 for connection of smart cards 410 for example sim cards fig3 illustrates the situation when such a smart card is present in the connector unit 420 the control unit 305 controls the reception and transmission of text messages as well as saving of the messages into the smart card and searching and retrieving messages from the smart card the control unit takes care of the special treatment required by certain types of text messages as described previously in connection with fig1 and 2 the control unit 305 comprises means 401 for marking the messages of the certain type or types in the status byte of the saving record of.