What you should do if you were to lose your cell phone are contact your service provider, and tell them what happened.
Tell the insurance company you are associated with so that you can arrange for a replacement.
Locate the maker of your phone to report it as being stolen, you can get this type of information off of your bill for your phone.
Locate the maker of your phone to report it as being stolen, you can get this type of information off of your bill for your phone.