If i buy a new sim card will it unlock my iphone?

So i phone this phone but it was locked so i restored it but it was locked by some iPhone finder thing if i change the sim card on it will it unlock?

No… Locked in this case means its locked by carrier

No.

If it is your iPhone how could have been locked by Find my iPhone?

I think your iphone is locked to a particular network provider due to this you can't use your iphone with any other GSM sim until you unlock it. You can easily unlock your iphone with the help of providers like http://www.onlinegsmunlock.com/apple-iphone/rs1wp9/ here they are rendering remote unlocking service to unlock all model iphone from network lock. You first verify that whether they are rendering service for your country and network provider. If yes then pay for it and unlock your iphone. After unlocking your iphone you can freely use it with any GSM sim.