I've been with dh for 15 years and he's always taken his phone to the toilet 2 or 3 times a day and can be in there up to an hour.
I asked him what he does on his phone all this time while locked in the bathroom and he said he was trying to poo.
He then said if you like I won't take my phone in there with me then and now he doesn't and in the last say 3 months he has been leaving his phone on the bed while he goes to the toilet (toilet is in bedroom) anyway suddenly his trips to the toilet have reduced to 2-3 minutes since not taking his phone in which is a big jump from 45- 60 minutes which he was before.
It's obvious he was up to something on his phone and has stopped now it's become an issue, isn't it?
I'm aware it sounds like he can't win here but this isn't something I intend to bring up again, it's just on my mind.