Perhaps you’d like to make the bedroom a smartphone/tablet-free area, so you can concentrate on each other – chatting over the day or having sex together.
What about meal times, when you’re watching the TV or going out together?
Most men hardly talk to their friends and text conversations / joke sharing on twitter etc happen only sporadically.
So if he’s constantly texting someone that’s a bad sign, as is deleting text messages and suddenly putting a password on his phone. Ask questions (‘What impact do you think this is having on our relationship?
If he is having an affair (emotional, physical or both), it is better to bring things to a head rather than hoping things will get better when he’s changed jobs, the kids go back to school or Chelsea win the cup.