Okay, I have a Samsung SGH-U900 and used to have a HTC Desire HD. It broke, this is my replacement phone, I've taken my telus SIM card out of my desire and put it in my Samsung U900. It never asked me for an unlock code.. I've tried flashing 3 different firmwares. All do the same thing, just say limited service or no service. Where I am my other phone and my wifes phone on the same network have service.

Is this firmware related, or improper unlock? Wrong firmware.

It's a Samsung SGH-U900, got it off Craigslist brand new. The box has some indian on it.. so it's from India, PO said he testing it with Fido and Rogers, and Bell and it worked..

Ideas? Could my SIM be bad now somehow?