I googled how to do it, and it says go to albums. On my iPhone it doesn't show albums at all. I have only one pic & I want it removed. I hate how Facebook deliberately just simply doesn't have a delete button to delete a pic or your profile. By law it should be made real easy. If it was then there would be no need for google about this or YouTube videos. It's not showing how on an iPhone & that's all I have. I hate Facebook.
Read more: https://iphoneus.org/faq/how-do-i-delete-my-profile-pic-on-facebook-from-my.html