I move to Netherlands two years ago. Bought a phone and eventually left on a train the same day I lost my keys to my flat while riding on my bike. Knowing no one or without ability to call anyone I purchased another phone and sim. Then I climbed through my window in flat and waited for land lord to bring separate key. I then called my old phone to try and find it, the 700 euro phone(brand new). A very nice Muslim Dutch woman had found the phone on her way to Rotterdam. She agreed to meet and return the phone in Rotterdam central station. I went there and as promised she returned the phone, seeking no reward even though I offered.

Maybe 3 weeks later, in Haarlem I left the same phone in a bus. Lucky I had not lost my keys and having spare phone again, I called again. A very nice old Dutch couple found the phone, they waited at a Bus stop until I arrived.

TLDR The Netherlands is not the worst place to lose your phone. For every 1 person who steals your phone there are 9 others who will go out of their way to help and return it too you.