Excerpts from Mell Kuss's message of 2014-01-22 13:05:16 +0100:
Hello,
I would like to know if Simtrace can detect silent sms. It was said by a german
magazin, but yet I didnt read a thing about it on your website.
Using SIMtrace you could detect SMSs going to, or coming from, the SIM.
But that's just one type of silent SMS (depends how you define it), and probably not
the one you are thinking of.
OsmocomBB (another project of osmocom) can detect all SMSs (going to the phone), because
you control the baseband.
kevin