Like a teenager

I wouldn't allow that! Not that DH knows how to use a mobile phone anyway.

Doesn't everyone ? DH carries his mobile to the table and places it on a stand so he can continue while he eats. He does not do it when family are here nor do any of the young ones get their phones out, some decorum still.

I am afraid my husband is obsessed with his iPad! He is always on it - when we sit down to watch tv, out will come the iPad. We are watching a favourite programme but he continues to look at his iPad. If challenged whether he is actually interested in the programme - well of course he is - still looking at his iPad. Also in charge of the remote. Yet I get told that I am the one who is obsessed with my ipad! Can’t win! Separate televisions?

I'm a bit like this. Have a programme on that I do really want to watch but DH not too keen. And then have a quick look at GN. Then he, of course, says "are you watching this?" I say yes because I am. Just not giving it my full attention.

I think it's probably quite a common thing these days.

My point was simply, EV, that phones give access to the same range of online activities, be it communication, information, or games, as the other devices.
Thank you for the amusing image I now have in my head of someone in the places you mention with a full-sized PC on their lap or under their arm!

When he goes to the bathroom I would dispose of it unless he takes it with him

Could you send him a text saying do you want a cup of tea or it is time for lunch? Try and tease him lightly about it!

Not while walking along or sitting on a park bench though, MamaCaz. With a laptop under my arm ? On the bus/train ?

I guess they do exactly the same sort of thing that those of us on Gransnet do when online, EV.
Phones, tablets, laptops, PCs etc. all give access to much the same diversions, don't they?

It is an addiction. Try chucking his phone out or at least hiding it. - making sure he can't phone it.

I am in danger of becoming addicted so I do know what it's like.
Because we often have a household of teenagers or early 20s, we can all 6 of us be on our phones at breakfast!
We tell ourselves it's no different from when we had the newspaper at breakfast.
As others have said, you could always communicate via the phone.

It's always puzzled me as to what people do look at when they're gazing oblivious in their surrounds at their phones ?

I don't possess one.

Yeah start communicating via his phone, get control of the remote because he clearly has no use for it. Tell him via his phone you're seriously considering divorce as your marriage has become untenable. You probably won't get a reply but then that tells you everything you need to know.

Move out for a few days, do not tell him, just see if he notices.

If he doesn't send him a text saying you are making it permanent.