AI companies are desperately trying to find actual use cases but it seems like there is not that much to justify current investment.
They are already doing planned obsolescence, with hard to replace batteries, limited software support combined with closed systems, etc... But they can't abuse it, as regulatory agencies are already after them and customers are starting to notice. They had a go with cameras, as it is a significant differentiator, but nowadays, most smartphone cameras are as good as they can be for what they are used for.
And it turns out that AI is the big hype right now, so of course, they are using as a selling point.
The funny part is that "AI" (machine learning techniques) have been running in smartphones for a while (I'd say a decade), hidden in camera software. How do you think these tiny cameras can do pictures that look so good? But they mostly kept quiet about it, as it had implications of making "fakes". And yeah, stuff like Siri that works mostly on servers, you don't need a phone with "AI capabilities" for that, just internet access, but they are certainly going to put in in their ads.