Taking intimate photos of yourself and leaving it on your phone isn't too smart but besides that before you take your phone anywhere just do a reset. That will delete everything and put the phone on default.
How could you forget that you had thousands of photos on your phone and turn over your password too? I mean if he was changing the screen then that is a hardware issue why does he need her password.
Why people store that kind of thing on their phone I don't know. I can't believe you will be so silly to save 1000s of naughty photos on one device that could be easily lost or stolen.
As long as you just restart your phone or not take weird pictures, then there shouldn't be a problem.
Phones are really vulnerable and because people put all their personal information on there its like their whole life lost. Just keep phone use simple because you can never know where your phone ends up!