[iMore Question]

i cannot disable my iphone with itunes can i do it by using find my phone and erasing everything

[Fit24]

Are you asking how to remotely erase your phone?

[Tartarus]

If you have the password which was used when the phone was set up, you'll be able to do everything as you like. Using Find My iPhone to erase all content is possible indeed, but if you don't have the password, it will still remain a brick.