It seems to be a bug in intex registration sms modul that is supposed to send only one sms to announce your device to intex.

Kat6 over at tjc found how to remove the corresponding packages. Personally i facepalm over and over thinking about that bug and as much as i defend jolla and intex as theyr first license partner, i would deinstall on my own risc. At least until the bug is fixed. Not official, can have sideeffects, be warned.