[Fatnino]

Let's move this into the physical world.

Say I have a bedside table that needs repairs. I send it to a carpenter. If I am fool enough to leave my nude photos in the drawer then I should fully expect the carpenter to have seen them. I'm the fool, he's innocent.

If, however, he takes those photos and sends them to a tabloid, now he's the asshole.

[FalconSensei]

If the problem you are having is that the drawer is not opening, how are you going to remove them before the carpenter comes in to get it open?

Or in the phone case: if the phone/screen dies, how can you do anything with it before sending to repair?

[lliamander]

Maybe stay with the carpenter and observe him so you can make sure the pictures are secure?

Might seem weird, but if you explain to the person doing the work that you have sensitive data on the device they'd probably understand the precautions.

[FalconSensei]

It's hard to do that when you have to drop your phone at the counter and whoever gets it is not the actual person fixing it

[lliamander]

Of course it's not necessarily easy. But you might as well make the request. If you are in that situation and you're concerned about sensitive data being leaked, then it is an option.

[seoulmetro]

Well now you've found part of your problem.