Hi I've been looking at a dual sim adaptor for my MObile. Has anyone any experience with these? A bit of googling comes up with a load of products. It seems I'd need a "Micro dual sim card" to fit my phone (SE T610). And it mentions having to "cut in" the cards. Not quite sure what this means? Also, I'm not really sure how this works. Some mention that you change the active sim by turning on and off. Does this mean that it will alternate which is the active sim with each power on/off? Other sites mention that once powered up, you can either put in a key code, or such to change between the two. Any thoughts and experiences welcome MO :)