Q: I found my lost iphone, how do i unlock it?

You use the AppleID credentials that were registered on the phone when Activation Lock kicked in.

need help my iphone tells me to connect too itunes now what do i do

i lost my phone and it locked i found it how do i unlock it so i can use it again

There's a tip for that: If you can't update or restore your iPhone, iPad, or iPod touch - Apple Support