My iphone camera portrait mode is not working

Use Portrait mode on your iPhone

1. Open the Camera app and swipe to Portrait mode.
2. Follow the tips on your screen. When Portrait mode is ready, the name of the lighting effect, such as Natural Light, turns yellow.
3. Tap the Shutter button .

Use Portrait mode on your iPhone - Apple Support

These iPhone models support Portrait mode: iPhone 12, iPhone 12 mini, iPhone 12 Pro, iPhone 12 Pro Max, iPhone SE (2nd generation), iPhone 11, iPhone 11 Pro, iPhone 11 Pro Max, iPhone XR, iPhone XS, iPhone XS Max, iPhone X, iPhone 8 Plus, and iPhone 7 Plus.

You need to Identify your iPhone model - Apple Support

Try to --> Take Portrait mode photos with your iPhone camera - Apple ...