portrait mode not working

You may try some of these steps, please check after each step...

Sometimes, a simple restart can resolve temporary software glitches. Turn off your iPhone, wait for a few seconds, and then turn it back on.

1. Restart the device. That's it.
2. Still not solved --> Force restart iPhone - Apple Support

nitish7814 Said:

"portrait mode not working: After some updates ny iphone 14 stopped portrait mode working in front camera When i clicked pictures it shows the bokeh effect but after checking in photos app there is no bokeh effect"

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Report this to Apple...

Do your Part: Provide Apple with feedback on this, letting them know about this issue.  Apple may not get back to you directly, but the more feedback they receive on this, the more they will know what is occurring, and what bug fixes to include in updates to come. Apple will know nothing of you occurrences, if you don't report it to them.

1. Go Here: Feedback - iPhone - Apple
2. Select: "Bug Report" for the "Feedback Type"
3. Comment: that this all began after installing some updates, and how you have troubleshoot it, thus far. Include the URL of this thread
4. Proceed from there as necessary