Phones with 3 and more SIM slots
prices on 2 models> 2 SIM cards
— devices that have 3 or 4 slots for SIM cards at once and are able to work simultaneously with the corresponding number of telephone numbers. For more information about several numbers on one phone, see "Only 2 SIM", and here we note that in practice it is not so often that so many numbers are needed at once, therefore this feature has not received much popularity.