Thanks for program SIM-Switcher!
I am sorry for bad English.
I adapter MagicSIM28 also have two SIM one operator (with different tariffs). At switching with SIM1 on SIM2 (and on the contrary) I receive the following message on a screenshot:



Thus any SIM does not work (only I can call with SIM1).
Question: For correct job SIM should be different operators???