If I don't want her to see my phone, it's simply because I am doing dirt.
Prolly not what she is imagining, but I watch porn, keep in touch with ex lovers, and have a dude texting me about runtz.
There some shyt in there I don't want her to see. That's what "privacy" is all about. The space to do your dirty biz.
When it comes to kids I feel strongly that all the paperwork and testing needs to be done ASAP. There's multiple situations in my family where kids thought their father was someone else.
If you have nothing to hide, why not get everything straight day 1