A method for processing and/or evaluating MMS (Multimedia Messaging Service)-related messages (Multimedia Messages (MMs), parts of MMs, delivery reports, read-reply reports, MMS notifications, etc.), on a device or device ensemble adapted to participate in mobile telecommunication (Mobile Station (MS); User Equipment (UE); Mobile Equipment (ME); laptop, notebook, organizer, PC, etc., connected to a MS, UE, etc.), the device or device ensemble accommodating an MMS User Agent and accommodating or adapted to accommodate at least one SIM card (Subscriber Identity module) and/or one UICC (Universal Integrated Circuit Card) with a USIM (UMTS (Universal Mobile Telecommunication Service)-SIM), wherein the MMS-related messages are terminal originated or terminal terminated. The MMS-related messages are processed and/or evaluated by at least one SAT/USAT application (SIM Application Toolkit/USIM Application Toolkit) residing on the SIM card/UICC.