Came across a situation at work where I needed to have mobile internet connection on a IPad 3G model. We have a fleet of usb wireless cards which we can use but the sim size is different. I could cut one out as a once off, however I need to do about 20.
Easiest solution was to get one of these Micro Sim Cutter, works like a charm. However puting them back into a normal large sim was a bit finicky.
Sim Adaptors that came with the cutter.
Adaptors that i got of Ebay
Adaptors that i got of Ebay and the one that came with the
Make sure you get SIM card in firmly and aligned properly.
Press Firmly in one go.
End results, you can use the cut out as a sim holder alwell.
End Product in a IPad sim holder.