On a iPhone are parental restrictions for the itunes account or on the actual device?

If I create a new apple account and sign in will they go away because just for that account? I have a old iPhone 3GS but when got it was like 10 and now 14 and the parent controls won't let me do anything basically and my dad can't remember the passcode he set 4years ago. So just wondering how do we get around them?

In the settings

Its in the iPhone's settings, just restore it and everything should go away. Just make sure you set it up as a new iPhone. So I'm sorry for your losses.