I agree with you. When you are spending time with someone, put the phone down. Unless I am actually waiting on a call or message, which I would tell someone, I try to keep my phone put away (except to take pics) when I'm with other people. Yes, it's rude and disrespectful and annoying. If I'm with someone who does it, if they look at their phone more than once, I will specifically mention it and ask them to put their phone away.

Some people are actually addicted to their phones. I use mine a LOT, but I'm not addicted. I'll happily put it away and forget about it, sometimes even purposefully put it in another room so I can pretend I didn't hear/receive messages from people. My mother is addicted to her phone. When she comes home from work, she sits in her arm chair next to my dad, and sits and looks at her phone ALL night. We can't get her to put it down to go walk on the treadmill, to have a conversation, it's not only frustrating but clearly unhealthy. She does seem to put it down (or at least not look at it) while she watches Jeopardy and Wheel.

What I try to remind myself with her is that it's truly an addiction, and she has a lot of trauma that she's never really going to deal with, so we, as a family, device different ways to "handle" her around things. It's frustrating but we all kind of know that pushing her causes these massive PTSD breakdowns, and while none of us want to tiptoe, nor do we want to indulge bad habits, we also know her age and what she's mentally/emotionally able to handle, so we push when we know we can push and we tolerate what we have to.

But yeah, what you're talking about goes beyond even someone with a phone addiction problem. Someone ignoring you because they just hung out with you bc they are bored is just a user and jackass. If they can't put their phone down, I would just stop hanging out with them. I don't want to be around people who make me feel bad.