Appreciate if you can help me on this.
My previous SIM card was from Optus, and I registered myself https://webclient.ap.blackberry.net/...jsp?site=optus
Recently, I changed my provider to Cingular, and went to https://webclient.blackberry.net/Web...ite=mycingular
to try to register for the BIS.
But, the systems said my current IMEI and PIN was in use, and thus, i cant register for cingular.
I login to https://webclient.ap.blackberry.net/...jsp?site=optus
and tried to de-register, but cant find any forms that I can use.