I'll be honest I'm protective over my mobile, I don't like other people snooping through it, I wouldn't snoop through someone elses as I'd respect their privacy!
There's nothing to hide, I'm not cheating, I'm not speaking to anyone I shouldn't, not even watching any adult content ffs. I'll let my brother or sister use my phone no problem as I know they will not search through it but sadly I know DH will if he had half a chance.
Case in point, years ago I let him use my laptop and 30mins later he came storming back to question me on my internet history... Literally the first thing he did was search through it. The thing he was so concerned about? I clicked on another mans profile on facebook, this guy lived 200miles away and it was my friend who sent it to me as she was seeing him. He was still really suspicious but anyone with eyes could have seen it was nothing to be concerned about.
Anyway he has been moaning about it again today saying he doesn't know my passcode and what am I hiding. It's pissing me off so much I'm tempted to tell him the passcode he can search through my phone see there is nothing then I'll kick the fucker out the door.