Why does my phone not support all new features on ios16

No previous model iPhone can support ALL new iOS 16 features. Apple is very clear in saying that nor all features are available to all iPhone models which can support iOS 16. To expect all features to be supported on previous models has never happened. The newest phones have hardware differences from previous models as the biggest reason.

No previous model iPhone can support ALL new iOS 16 features. Apple is very clear in saying that not all features are available to all iPhone models which can support iOS 16. To expect all features to be supported on previous models has never happened. The newest phones have hardware differences from previous models as the biggest reason. And if there are features the new models offer you find important, you can trade in your previous model and upgrade to the newest model.

Because it doesn't have the hardware to support some features.