Hey there shedrack208,
Thanks for reaching out to the Apple Support Communities. To get started, since the iPhone XS would support Portrait mode when taking photos on your iPhone, what happens when you try using Portrait mode on your device?
For example, are you seeing any particular alerts or message, or are you not seeing the option for Portrait in the Camera app?
Use Portrait mode on your iPhone
Take photos in Portrait mode
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
.
The Camera app lets you know when you're too close, too far away, or if the area is too dark. You can also use True Tone flash, set a timer, and apply filters. After you take a photo, you can use the built-in editing features to do things like crop and auto-enhance.
Some iPhone models have multiple options for Portrait mode, like 1x or 2x. Just tap the 1x or 2x button to switch between the options. With iPhone XR and iPhone SE (2nd generation), the rear-facing camera must detect a person's face to take a Portrait mode photo.
If you're not seeing the option for Portrait mode, then based on the steps you've tried, we would recommend reaching out to Apple Support directly from this link here: Get Support - Apple
We hope that's able to help.
Take care!