Normal SIM and Micro Sim cards are not convertible to Nano Sim as the size is much smaller. If using traditional cutting process, it will cut the gold chip Furthermore, nanosim is using a new set of circuit architecture, which means the current flow is different from pin to pin

So to all tho asked, "Can convert micro sim to nano sim?", the answer is "No".

Dun worry, we all asked noob questions. To be honest, no questions is noob, just a person who is noob enough not to ask keke.. fire me if im wrong about this

1) Nano SIM is smaller in size obviously, so it have higher density of circuit architecture. With this reduced size, devices are allowed to be design in smaller and more compact sizes. This is what I know so far.

2) None, Apple was the first to publicized it.

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Added on September 13, 2012, 3:03 pm
No. Not sure if its no revealed during the conference or totally dun have it. For truth, we'll need to wait until someone hold on to it and explore it further

2) The technology is there but no one have adapted to it due to some reasons. I'm just too lazy to put all the paragraphs here, not a short story Apple have been working on this for few years and yeah, its approved and there it goes along with ip5~