my friend gave me a blackberry curve, and it says "SOS" at the top right corner where the carrier should be. when I put my Telus SIM card in, the sos remains, and the phone doesn't connect to the Telus network... I'm pretty sure that the phone is unlocked, however, because when i looked how to unlock a phone online, it seems to already have everything 'disabled' like it should (when a phone is unlocked)

so i dont know for sure if it is unlocked, but im pretty sure. and i dont know what to do because i dont have that much money that i really want to use this phone with Telus, so is there any way i can fix it? Can Telus help me possibly?

All help is appreciated. thanks (: