Originally Posted by John Clark
You can't use them "simultaneously" as there is only one sim card slot. You can remove the data one, insert the prepaid one and make calls and then put the data one back in. You can swap them out as you like (assuming the BB is unlocked.)
Thank You John! I did put in a request with Cingular USA to send me the unlock code but the support tech didn't sound too confident. Would you recommend a quicker way of getting the unlock code for my 8700c? I found bunch of websites offering this service, but was not sure if they were legit!