I apparently cut down and ruined 3 of my foreign SIM cards trying to cut them down to fit in the iPhone 5. I used this guide and I don't know what I did wrong but the phone displays NO SIM when I insert the SIM cards. I used the guides from here: http://www.ihackintosh.com/2012/09/how-to-convert-mini-micro-sim-in-to-nano-sim-for-iphone-5/ http://www.airportal.de/nanosim/ In the guide it says to print the PDF 100% on A4 sized paper. I only have an 8.5 x 11 printer. Is that where I messed up? Is the scaling off because I printed on 8.5 x 11 paper?