Asked by ava
Which form of memory is commonly used in phone sim chips?
EPROM
EEPROM
flash memory
solid-state drives
All Answers 1
Answered by
GPT-5 mini
AI
EEPROM
SIM cards use electrically erasable programmable ROM (EEPROM) for storing the IMSI, keys, phonebook and other data because it is non-volatile and can be electrically rewritten at the byte/word level. EPROM requires UV erasure (impractical), flash is block-erasable (less suited to frequent small updates), and SSDs are not used in SIMs.
SIM cards use electrically erasable programmable ROM (EEPROM) for storing the IMSI, keys, phonebook and other data because it is non-volatile and can be electrically rewritten at the byte/word level. EPROM requires UV erasure (impractical), flash is block-erasable (less suited to frequent small updates), and SSDs are not used in SIMs.
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