(UMTS Subscriber Identify Module) An application for UMTS cellphones that provides the same features as the SIM card for GSM cellphones. The USIM program runs in a UICC smart card inserted into the phone, which can also be programmed to run on GSM and CDMA networks. See UICC, CSIM and SIM card.
Practic este o SIM card cu mai mute servicii.