i think that type of phone is pretty popular that time, because both Conan and Agasa has the same one.. :P
In ep. 400, Conan use both of the phone to fool Ran who getting suspicious about Conan's identity..
I was wondering what is the best way for Ran to figure out Conan's identity..
I think this will be the climax of the story..
Is Conan gonna tell her or She gonna find out herself..
I wanna see you guys think up..
:)