How to disable find my iPhone on iphone 6?

I found an iphone 6, and when I tried to use it, it was stuck in lock mode with "find my iPhone". How can I disable that?

The only way is to unlock it using the correct Apple ID and password. Apple or anyone else will not help you disable it because it is an anti-theft feature.

You can't

Don't ask us to help you STEAL.

Don't steal it hand it in otherwise you could get in serious trouble. Apple can track their phones now just like Samsung and report it back to the police, so I would do the right thing. And you could never own it anyway because you have to have the right apple ID. If you hand it in you might get a reward and if not it just makes you a better person. I know how hard it is but stealing gets you no where. Believe me.

Thank you Blood Raven!