Joe Brandt wrote:
>For the rest of you non cell phone using people.
>
>Electronic Serial Number (ESN) - The unique identification number embedded in
>a wireless phone by the manufacturer. Each time a call is placed, the ESN is
>automatically transmitted to the base station so the wireless carrier's
>mobile switching office can check the call's validity. The ESN cannot easily
>be altered in the field. The ESN differs from the mobile identification
>number, which is the wireless carrier's identifier for a phone in the
>network. MINs and ESNs can be electronically checked to help prevent fraud.
>
>Thanks Logan I learned something.
>
>
My wife & me use unlocked GSM phones, which use SIM cards. We can use
different service carriers (GSM.... Cingular, T-mobile & others), by
inserting a SIM card from that particular carrier. Process takes about
30 seconds to switch carrier. If there is a ESN (with GSM), it would
most likely be SIM card related.
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