FMS (Free Message Service) can be used as a SMS. FMS IS FREE. When you receive an FMS is being advised by rings from a number of fixed network (+44 1546470962). Rings can be anonymous for some country. Anyway, this means that someone has sent an FMS to you! To read an FMS is easy procedure: start smessenger, choose Incoming and next time choose Refresh. P.S.: the system is based on short calls on your phone (rings), but you do not have to respond. If you answering several times to rings generated by the system then you risk to go in black list with consequent disable notification service.