I was given a used Blackberry Storm 9530, stamped with Verizon [my cell carrier]. When I tried to swap out my phone, I learned that using this phone Verizon requires I pay for a data package, which I really don't need. I called Verizon to confirm this.

So, I'll probably sell or give it to someone else. However, first I thought that since it has a SIM card for GSM capability, I could lend it to a family member going to Europe in a few weeks.

I want to know if this phone is unlocked so I put in the this Blackberry Storm 9530 unlocked SIM card that a friend bought in Europe last week [she used it in another unlocked GSM phone].

Just as with that other GSM phone, turning on the phone with that SIM card in it raises an "Enter PIN code" message requesting 3 characters, but nothing like "invalid SIM card", etc.

Would you say this Blackberry Storm 9530 is unlocked?