Number Assignment Module (NAM) - The NAM is the
electronic memory
Semiconductor memory is a digital electronic semiconductor device used for digital data storage, such as computer memory. It typically refers to devices in which data is stored within metal–oxide–semiconductor (MOS) memory cells on a sil ...
in the
cellular phone that stores the
telephone number
A telephone number is a sequence of digits assigned to a landline telephone subscriber station connected to a telephone line or to a wireless electronic telephony device, such as a radio telephone or a mobile telephone, or to other devices f ...
,
International mobile subscriber identity and an
Electronic Serial Number. Phones with dual- or multi-NAM features offer users the option of registering the phone with a local number in more than one market.
Mobile technology
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