Before (Klarmobil with me) outputs so 20 euros to his provider for a micro-SIM and 3 days between sending and receiving the SIM unsubsidized sit there, you should think seriously about this Cutter.
You can cut out the card with template and scissors - that was me but a) too dangerous and b) to be impractical, since this is lost to the "frame" (ie the rest of the SIM card).
For the price this is ne great alternative - and in the company register already the first with new mobile phones that want to punch sometimes ;-)
Tip: You should have the edges of the micro-SIM deburr even a very little with fine sandpaper. Preview (not carving - only the blade pull over to the ridge to remove) Alternatively, simply with the knife.