Lost iPhone 4 between Dame Lane and Rathmines

Lost my phone Sunday 8th May and woke up the next day to track it. It was in a housing estate off Aungier St. I put a message on the screen to meet me in Stephen's Green in half an hour and the phone moved towards that area. It was last tracked outside the shopping centre at the Gaeity. I've checked everywhere (even bins) and any information would be greatly appreciated.