Originally Posted by SebasC
Give it back to who? I don't know who it belongs too and finding something on a bus doesn't help.
Hand it in to the bus company, or take it to your local Police Station. Either way you get to keep it after 6 months if it remains unclaimed. Or, call the service provider of the phone, they can then trace it back to the owner. Meanwhile it's not your phone to be tampering with.