What u do is u turn the metal side of the SIM card up
Take the micro sim holder from the iPhone and place it on top of the SIM card.
Try and get the metal side as close to the holder as possible.
Take your pencil and trace lightly around the metal of the SIM card with the holder on top.
When you have a perfect fit. Cut along the line you have drawn.
Be careful not to cut the metal.
If the SIM card is still a bit to big then trim it a bit until it fits the holder.
And that how to make a micro sim :)
- Normal SIM card
- The SIM card holder from the iPhone