OPINION: Are you paying too much for SingTel's Multi-SIM plan? - Darius Chang

CNET Asia, 27 Oct 2010
Micro-SIM cards, used almost exclusively in the Apple iPhone 4 and iPad, are simply normal-sized versions with most of the plastic removed. In fact, we've found that all it takes for a normal SIM card to fit into a micro-SIM slot is a handy pair of scissors and a file. Full story