Phones

I can't figure out if I'm overreacting or not. I've been dating my boyfriend for over 5 years. For the past year I have noticed he is on his phone more. Whether we are watching TV, in the car, cuddling, eating dinner with me, or anything else he is constantly texting multiple people. I am very rarely on my phone, and it is usually in my purse or on the other side of the room. It makes me feel like he does not value our time and would rather talk to other people. Every time I have brought it up to him, he just says that it's rude to ignore texts and it's not like he does it all of the time. I understand every once in awhile, but I think it's too much.

Another thing is, when he is with other people he is slow to respond or does not reply at all to me.

I just brush it off and assume I'm just being needy.

What should I do?