How to hack into your own iPhone?

I recently found my iPhone that has been lost- and can't figure out the password. Do you know how to hack into it? If yes, answer with simple words, because I don't know about all this "syncing" and such, but if you include those words, please put a meaning in parentheses.

Should be able to change the password in iTunes… Should be able to look at your iPhone in iTunes I know i can

Assuming you mean the 4-digit main screen "password"… Start at 0000 and work your way up… Or start at 9999 and work your way down. Something less than 1, 000 tries is not that big of a deal.