<P> A subscriber identity module or subscriber identification module ( SIM ) is an integrated circuit that is intended to securely store the international mobile subscriber identity ( IMSI ) number and its related key , which are used to identify and authenticate subscribers on mobile telephony devices ( such as mobile phones and computers ) . It is also possible to store contact information on many SIM cards . SIM cards are always used on GSM phones ; for CDMA phones , they are only needed for newer LTE - capable handsets . SIM cards can also be used in satellite phones , computers , or cameras . </P>
<P> A subscriber identity module or subscriber identification module ( SIM ) is an integrated circuit that is intended to securely store the international mobile subscriber identity ( IMSI ) number and its related key , which are used to identify and authenticate subscribers on mobile telephony devices ( such as mobile phones and computers ) . It is also possible to store contact information on many SIM cards . SIM cards are always used on GSM phones ; for CDMA phones , they are only needed for newer LTE - capable handsets . SIM cards can also be used in satellite phones , computers , or cameras . </P>
what does the s stand for in sim
what does the s stand for in sim
subscriber
subscriber