04-13-2008 1:37 PM
04-17-2008 9:51 AM - edited 04-17-2008 9:51 AM
As Excalibur said that is the devices PIN number. Every BB has a unique PIN number with it. It is used for sending and recieving PIN messages and using BlackBerry Messenger. Very useful app if you have alot of friends that use BB's.
That's a PIN number. ESN is for CDMA ro TDMA phones.
04-17-2008 10:04 AM
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