I have developed an application to send and read SMS in port number. I have used Port("50000"). I have tested in GSM phones, its working well while SMS arrives in that port number. But while testing in CDMA Nokia 6275, its not receiving any SMS via that port. Kindly explain me whether there is anyother way to SEND SMS to CDMA mobiles via a port number. The Service provider for CDMA is Reliance in India.