> > And that's probably the incoming SMS size. But I don't see > > anything for what actually reads the incoming SMS. Hmm it occured to me that maybe the incoming messages are read using QMI over USB. > That seems to be standard message > ftp://www.3gpp.org/tsg_t/TSG_T/TSGT_04/Docs/PDFs/TP-99129.pdf . > > Do you see AT+CNMI during boot and AT+CNMA after message is received? I'm only seeing AT+CNMA=0,0 on dlci 9 after resume. I think that is used to query for new messages. No CNMI in my logs it seems. But if QMI over USB is used to read the messages that would explain it only checks for new SMS.