From the text I'm pretty sure that the author does not understand how "SMS shortcodes" are assigned. Thus, he cannot explain it to others properly. If malware

From the text I'm pretty sure that the author does not understand how "SMS shortcodes" are assigned. Thus, he cannot explain it to others properly. If malware is installed on your phone, you do not get to see the code (unless you have Android 4.2, which is only about 6% of the phones). The point is not to install the apps. from unknown sources, even if they look like a well known application.