I know I have to use my IMEI number, but everywhere I look, It says free, but you have to give credit card info. And on top of that, i have a rare model (Nokia, at&t model 6350-1b)
Only certain basic model Nokia phones like DCT 2/3 and 4 model phones can be unlocked for free using unlock codes which are available at Unlocking4Free.com All the other model phone should be unlocked for paid only. You have no other go.