I think it was kind to provide your phone to someone asking. The fact that they robbed it should not be a seen as a lesson, rather should be seen as "shit happ

I think it was kind to provide your phone to someone asking. The fact that they robbed it should not be a seen as a lesson, rather should be seen as "shit happens but it could have been worse". Maybe if you did not offer the phone, they would have taken it forcefully.