How to deal with someone who's always on their phone?

My dad is addicted to his phone. I only see him on the weekend when I go home. He's literally always on his phone. Whenever I try to talk to him, he ignores me completely. I haven't had a conversation with him for years even though I see him every week. My mom is considering divorce for the same reason. We tried talking to him about it, but he doesn't care. The ironic thing, is when I travel, he forces me to facetime him every day otherwise he gets mad. But when I'm literally next to him, he ignores me. What would you do if you were in my position?

How to deal with someone who's always on their phone?
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