Beware of fake SMS messages strikingly similar to those sent by the mobile operators.
The whole matter was revealed by the Nebezpiecznik.pl portal, one of whose readers has recently received such an SMS.

The fake message reads: "I'm back! The number given as the sender of the SMS had finished talking. You can call back. The message is free, sent by the Operator".

Persons who have received such an SMS can reflexively dial the number, however the cost of such a call can be quite high.

To avoid any problems, the phone users should pay attention to the beginning of the number. If the number starts with +53 then it is almost certain that the sent message is false. Any attempt to call back to the given number can be very costly and reach even up to 13 PLN per minute.

Like always in cases like this, the only benefactor is the scammer, who receives remuneration from every minute of the call.