Will centennial wireless sim card work in Blackberry 7100i?

Centennial wireless sim card works in At&T and t-mobile phones, provided they are unlocked. As you must be knowing, the cellular service providers charge for their service but not for the particular technology used for rendering you the service. The cellular service providers do not have ownership over the phone manufacturing companies.

So, some of the phone handset manufacturers lock the services given by other companies. Before buying a particular phone, you need to thoroughly consult with the technical side of that particular company regarding use of this card.

For further detail you can log on to www.unlockphone.com. Please shoot your query to get a fitting reply. You can also direct your query to www.answers.yahoo.com for a good reply.