How do I delete a Facebook account on iPhones
I need to delete my granddaughters Facebook account on my iPhone
To delete a Facebook account on iPhone, you need to log in to a browser as you normally would on a computer. Log into your Facebook account and go into the "Settings", and then select "Delete" for your account to be deleted.
Account Settings > General < Account: Deactivate. Hope this helps! :)
I think you can't on mobile