A CDE Definition
(User Identity Module) See R-UIM.
(Removable User Identity Module) A removable smart card that is used in CDMA cellphones. The R-UIM is a superset of the SIM card used in GSM phones, and like SIM cards, allows CDMA subscribers to use a different phone by moving their R-UIM cards to the new phone. See CSIM and SIM card.
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