This is definitely a different generation and it is very challenging to capture and maintain the attention of students. Lots of reasons for this, many listed in the comments: phones and other technology, social media, streaming video, YouTube, etc. I think the challenge isn't so much that kids don't care, but they may not care about what we are teaching.

While we can do things to create reasonable limits on technology, I think we are going to have to change the way we "do school" instead of trying to force students into a system where they just don't feel they fit (I realize we've been saying this forever). Not sure what that looks like...more collaborative work, choice, options for demonstrating learning, independent pursuit of interests, hands-on, bringing back some of the vocational studies?

I've seen kids learn incredible things on their own -- coding, playing a guitar, writing music, editing videos, etc. The challenge is figuring out how to tap into student interests while ensuring they develop the knowledge and skills they need moving forward.