Doesn't recognize faces on iphone6s back and iphone7 back and front portrait camera

[ozanyaldir]

I think the high resolution causes this issue. on iphone 7, portrait camera does not recognize faces. If anyone solved this please help me too.

[kennylugo]

I got it to work on iPhone 7 & iPad Pros

All I had to do was change the sessions input preset with one line of code:

session.sessionPreset = AVCaptureSessionPreset640x480

[da1ssk]

AVCaptureSession.Preset.hd1280x720 also worked on iPhone X.