You are probably here because you just got a new device on your hands. And after unboxing it and turning it on you discovered that your SIM card doesn’t fit inside the new slot! This actually just happened to me after upgrading to a Galaxy 6S Edge from my beloved Nexus 5. Been there, done that. I’m with you on this one.

It doesn’t matter wether you had an old phone with a regular-sized SIM card or a newer phone with Micro SIM – you can cut the SIM card to fit inside your new device in just a few minutes!

Disclaimer: Do it at your own risk. Trendblog takes no responsibility to any damage to the SIM card and/or phone.

Having said that, it’s actually quite easy to do if you follow the guide below.

What you will need:

  1. Your SIM card
  2. A cutting template (you have to print it yourself)
  3. Kitchen knife or good scissors


  1. Tape  (chewing gum will also do the trick)
  2. Sand paper or nail file

SIM card cutting template

Cutting a SIM card without a template might lead to you destroying it, so don’t do that unless you have a SIM card cutter. First things first, go ahead and download a template, which the guys over at GoSoftWorks prepared for you.

When printing the cutting guide, make sure to NOT check the option “Fit to page” or any other setting that might change the size of the original document for printing.

How to cut a Micro SIM card to Nano SIM

  1. Align your SIM card with the template, contacts up
    • Secure it in place with tape or a piece of chewing gum (yup, it works too)
    • If the SIM card is bigger or smaller than the template – print it again with different settings. This is crucial to making the right cuts.
  2. Align your kitchen knife with the guides and press down on the SIM card to make markers for later
    • Start with the 45 degree angle cut (bottom right edge)
  3. Complete the cuts with a heavy kitchen knife or good scissors


Only attempt to cut the SIM card with very good scissors, otherwise you might break it. My preferred method is using a Chef’s Knife, placing it on the markers (from Step 2) and gradually increasing the pressure to make a clean cut. Repeat that 5 times and you will end up with your almost finished Nano SIM card.

Remember: it’s always better to cut off less. Don’t try to be super precise if you fear destroying your card. Cut just a tiny bit less off than you actually need to, you can always sand the edges later for the perfect fit. If you need to sand down your new Nano SIM to make it fit, only sand the edges. Don’t sand the gold contact!

Some SIM card’s gold contact will be larger than others. This means that some of you will actually need to cut a part of the gold contact to make the SIM card fit into the new slot. Don’t worry though. Just follow the guides from the template and your SIM card will be just fine. If your SIM card happens to have a larger than usual gold contact and you’re afraid of cutting it – just do it. Your card will work just like it’s supposed to.

SIM Card Dimensions

There are three standards of SIM cards that are commonly used in phones: Mini-SIM (we know it as the “regular” SIM card), Micro-SIM and Nano-SIM.

  • Mini-SIM – 25 mm x 15 mm x 0.76 mm (height x width x depth)
  • Micro-SIM – 15 mm x 12 mm x 0.76 mm
  • Nano-SIM – 12.3 mm x 8.8 mm x 0.67 mm

As you can see, Nano-SIM cards are slightly thinner than Mini- and Micro SIMs. Nevertheless, even if you cut a Micro-SIM to fit into a Nano-SIM tray, you should be just fine.

Which SIM card fits into your device?

Not sure which kind of SIM you need to use? Here’s a list of popular devices and which SIM cards you need to have.

  • iPhone 4 & 4S – Micro SIM
  • iPhone 5, 5S, 6, 6S (also all Plus models) – Nano SIM
  • LG Nexus 4 & 5 – Micro SIM
  • LG G X – Micro SIM
  • Samsung Galaxy A3, A5 & A7 – Nano SIM
  • Samsung Galaxy S3, S4, S5 – Micro SIM
  • Samsung Galaxy S6 (edge) – Nano SIM
  • Sony Xperia E3, E4, M, M2, S, T, Z, Z1, Z2 – Micro SIM
  • Sony Xperia Z3 – Nano SIM