To be able to send an SMS, a device must have a valid Service Centre Address, SCA (aka Message Centre phone number, etc) When reading a message in PDU mode, an SCA is included - Is it safe to assume that this SCA will be valid for use to send any reply :question:

SCA for reply to received SMS?

awneil July 15, 2008, 5:16am 3

I agree - but “most” is not sufficient!

how to send an SMS message from a PC?