Losi iPhone 5 and device is turned off and hence can not locate using Find my Phone app
I lost my iPhone5 few months ago in August 2013. I think I had pass code setup but not iCloud (so there was no way to remote erase or to find it). The next thing I did was called the customer  service (mine was T-Mobile) and they temporarily suspended my line. I immediately changed all my passwords. I never got my brand new iPhone 5. I would suggest erasing the phone and/or if possible changing all the passwords you could remember ASAP.