There's a 9 year gap in age between my ex and I. One of the big differences between us is that while I'm addicted to my phone too, I don't tend to use it to send messages much. Unless I have agreed to be somewhere by a specific time, I won't text to say I'm late, for example. I won't fret about not hearing from someone. I think that difference to great deal is down to growing up with and without a cellphone - I was 20 when I got my first one, and it was another couple of years before I used it much outside of business calls.

I'm used to expecting hours and hours of "radio silence" from people even if they're late, or I'm late, because when I was a kid calling meant having to know where they'd be, and getting to a phone booth or somewhere I could borrow a phone. She grew up being used to being always contactable and able to contact.