What locality in Perth is phone 94508616 belongs?

look in the google phone directory for perth

08 Central and West Western Australia, South Australia, Northern Territory Perth, Adelaide, Darwin

You have access to the internet, look up Perth WhitePages.

http://www.finderoo.com/web?ts=go&q=residential+phone+numbers+perth+wa

http://electronicshelponline.blogspot.com/

have you looked at this websites ?
http://australia.numbers.tel/

http://www.phonebookofaustralia.com/

http://world.192.com/australia/australia

Do you have the name of the person and the full address ?
world.192 might be able to help

I suggest you take the cell phone to a cell phone shop. They can remove the SIM card and use a SIM card reader to look at the stored names/phone numbers and might be able to identify a home phone number. The number may also match the area where near where the cell phone was found. If so then ring this number and hopefully return the phone to its owner.
Good luck with your search, this is a neighbourly thing you are doing.

I take it you live in Perth, Scotland and not Perth Australia.

Contact whirpool direct and say that you need part number 4812 440 10817 it shows on whirlpool database as a glass door frame but it means it's the plastic around the glass ( I promise you) acording to my system ( I'm a Whirlpool engineer) you can get one direct from us for about £22.77 plus delivery or you could go to your local retailer with the part number given and see if you can get it cheaper

Why don't you check with a reverse phone number website? You can find them by searching the web for for "reverse phone number lookup". Once you've found one, you enter the phone number, and the website tells you who it belongs to. Unless the person has had their name blocked, then there's no way to find out, other than calling the number and asking them.