Lost my Samsung Galaxy Ace Duos. No app Installed. Sim also not working. Can anyone help how to trace it Lost my Samsung Galaxy Ace Duos. No app Installed. Sim also not working. Can anyone plz help how to trace it.
Unfortunately, there is no way for you to trace it when all wireless options are nill. The best that you can do is to report the IMEI of the phone to your network so they can block it, becoming only a useless brick.

I don't know if some network operator have the ability to track phones thru IMEI. You should ask them, its worth a try.

edit: I think my thinking went overboard about your case. Have you simply lost it in the house or a familiar place?