Thank you for your quick response. It appears from the qmi prints, that no indications are being sent. I only req/rsp to device open etc. API calls. Although, app has successfully registered for NAS srv-sys indications and also connected to signal : serving-system. Do I need to do anything else to receive indications? <div class="gmail_extra"> <div class="gmail_quote">On Dec 1, 2016 1:53 PM, "Aleksander Morgado" <<a href="mailto:aleksander@aleksander.es" target="_blank">aleksander@aleksander.es</a>> wrote: <blockquote class="m_-118882682808752466quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="m_-118882682808752466quoted-text">On Thu, Dec 1, 2016 at 7:46 PM, Shilpa Velamuri <<a href="mailto:shilpa.vel@gmail.com" target="_blank">shilpa.vel@gmail.com</a>> wrote: > Is there a runtime debug flag that can be turned on to see log messages from > libqmi to see if it is sending out any indications. </div>Yes: // Set default handler for all libqmi log messages g_log_set_handler ("Qmi", G_LOG_LEVEL_MASK, log_handler, NULL); // And enable traces so that sent/received messages are printed qmi_utils_set_traces_enabled (TRUE); The log_handler method is a GLogFunc: <a href="https://developer.gnome.org/glib/stable/glib-Message-Logging.html#GLogFunc" rel="noreferrer" target="_blank">https://developer.gnome.org/glib/stable/glib-Message-Logging.html#GLogFunc</a> You can see an example in libqmi sources under src/qmicli/qmicli.c. -- Aleksander <a href="https://aleksander.es" rel="noreferrer" target="_blank">https://aleksander.es</a> </blockquote></div> </div>