After a Google search, I came across this website and thought I'd ask my question but before I do, I'll give you a brief snapshot of what lead up to this post.
I recently purchased a dual sim card adapter (http://www.magic-sim.com/product-details.php?Product=9). Everything was going fine until I started snooping around the "SIM Toolkit" menu option on my phone. Traditionally I would select "SIM1" for my initial sim card, and "SIM2" for my secondary sim card.
Anyways, last night I was looking through the SIM Toolkit menu and I was curious as to what the "007" feature was so I clicked on it. Now I no longer see "SIM1" or "SIM2" and am unable to toggle between both of my sim cards. I have to literally remove a sim card and insert the other sim card to toggle between the two sim cards (which sucks!). I have also performed a master reset (lost everything) and it still won't revert back.
Curiousity may not have killed this cat, but it sure made me irritable. I haven't been able to Google a solution to this problem. Has anybody else encountered this problem and been able to fix it? If so, how?