I am developing an application in c# for pocket pc's which comminucates with a mobile phone through the IR port. But there aren't any help on how to communicate with a mobile phone through the IR port. I found a sample application provided by Microsoft which enables communication between 2 pocket pc's through the IR port. But it dosen't work with a mobile phone. What i want to do is send a message to the mobile phone through the IR port, wait for the reply and receive the reply. Where can i find some sample code for this?