I left my iPad on United Airlines flight 2 from Singapore to San Francisco last January. United said it was not found.
I went to the Apple web site, and locked it down. I sent a message with my email, PO box, and phone number. If the iPad was still powered then the message would appear if anyone opened the cover
About a week later, I received a message from Apple that said someone in Shanghai China tried to log into my iPad. How it managed to connect to the internet is a bit of a mystery. How it managed to get to Shanghai is a mystery as well.
About three weeks ago I received a large heavy envelope. Yup it was my iPad. It was postmarked in San Francisco. There was no name.
Strange huh?
Read more: https://ipadget.com/talk/has-anyone-ever-mailed-something-valuable-back-to-you.html