From Longman Dictionary of Contemporary EnglishSim cardSim card /ˈsɪm kɑːd $ -kɑːrd/ noun [countable] a plastic card in a mobile phone that stores your personal information and allows you to use the phoneFrom Longman Business DictionarySIM cardˈSIM card a small plastic card inside a mobile phone that stores information about the person who uses the phone, and also has memory for storing messages → card
