found - mobile phone

I know nothing about present day, mobile phones. Today, I found a mobile phone. The sun was shining,and I could not read the screen - except that there was a message "last logged in". I went to a shady spot, and pressed the big button in the middle - and was presented with a drop down menu - anyway, I could not work out how to do anything - eg - just turn the screen off - so I pulled the battery out - and now nothing works.

I had been hoping to play around with it, and maybe find the "phone book" and ring someone - but now the owner, cannot ring (from another phone), their number..



It is a nokia (but i have no idea about the model number). There was a name on the back of the phone - with the surname BROWN.. Layne Brown. I looked up facebook, and my space - but could not find anybody who might be local.

Any ideas, as to how I can get the phone to the owner