peterleinchen, at me such problem. After Key Power N900, SIM1 works well. I am switched on SIM2, too works well. When I again switch on SIM1 I can do only calls from it, and here accept calls does not want! If I switch on SIM1через phone application using a code 001 then SIM1 works well. What it is necessary to make for the decision of this problem??? Thanks for the answer!