Turbo SIM

• abstract: Turbo SIM card (also known as TurboSIM) is considered to be the forerunner of a large family of "Dual SIM" devices (HyperCard, HyperSIM, China3GPP, StealthSim, MagicSIMetc.) that piggyback on a mobile telephone SIM card to alter its normal operation.

以上来源于: WordNet