Apple's Photos app can be quite clever when it comes to recognising faces. This allows it to group various images together featuring a particular individual, which can be very handy.
Of course, it's not perfect, and this sometimes results in misidentified faces, requiring you to correct them manually. The problem is, it's not immediately apparent where these corrections can be done.
Thankfully, it's quite easy once you know how, so here are the steps you need for fixing or removing faces wrongly identified by Photos on iPhone.
Finding the faces
The first thing you'll need to do is find the person (or face) in question. To do this, open the Photos app and tap on the Albums option at the bottom of the screen then scroll up until you find the People & Places section, then tap on the box marked People.
In here you'll see a sub-album for each person that Photos believes it has identified in one or more pictures. Tap on a face and you'll see all the pictures in which Photos thinks this person appears.
To change one, tap the Select option positioned on the right just above the photos. Now you'll see a new option pop up at the bottom of the page entitled Show faces. Tap this.
Photos will now show you the areas of each picture in which it thinks it sees that person's face. If you find one that's wrong, tap on the image then tap the Share icon in the bottom left corner.
The Share menu will appear but included in it this time is an icon named Not This Person.
Tapping this will remove the association between the photo and the person, sending the image back into the general population and leaving your friend's visage undefiled once more.