007 function (007 function is not supported by all mobile phones).
If 007 mode can not return to STK menu, there are two solutions.
1 a. Select sim card as the phone number memory firstly.
b. Save 007 to the phone book on the sim card. STK menu will appear again.
It's the same for 001, 002, 004, 005 and 006
c. Check this video for reference
http://www.youtube.com/watch?v=PKuwRy9OqO4
2 a. Adjust mobile phone network settings from 3G mode to GSM mode.
b. Restart mobile phone.
c. Dial 007 from keypad, then hung up (in two seconds). STK will appear again.
sim2に通話可能なsimを入れて007するとおk。