BIS is the blackberry service. Your carrier will have a web portal to BIS where you will be able to associate the new blackberry with your BIS account (assuming you have a BIS account). See
http://www.blackberryfaq.com/index.p...BIS_account%3F.
The IMEI is an identification number for the device. See
KB04665-ESN, MEID, ICCID, IMEI, IMSI, PIN and SIM.
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