SIM Card Adapter - 3-in-1

This is a 3-in-1 SIM Card Adapter, a three small pieces of non-aging plastic that give you the ability to turn your nano or micro SIM into a card the next size up for your cellular project. This adapter is able to convert a nano sized SIM card to both micro and standard size and a micro sized SIM card to standard. Each adapter is easily removed from the harness by pushing it out with your fingers or by using a pair of snippers for a clean edge.

More and more of us have a phone that uses a micro-SIM. Conversely, most cellular dev boards use a standard SIM. This will allow you to adapt the SIM from your phone (assuming you have a GSM phone) to prototype your project without needing a 2nd data SIM.

  • 1x Nano to Micro SIM Adapter
  • 1x Nano to Standard SIM Adapter
  • 1x Micro to Standard SIM Adapter


Looking for answers to technical questions?

We welcome your comments and suggestions below. However, if you are looking for solutions to technical questions please see our Technical Assistance page.

  • DJ Scorch / about 8 years ago * / 1

    Sorry to be pedantic but these adapters are:

    • nano-SIM to micro-SIM
    • nano-SIM to mini-SIM
    • micro-SIM to mini-SIM

    These will not adapt anything to a standard SIM. (The SparkFun T-mobile SIM card is an example of a standard SIM that can be broken down to a mini-SIM... you can keep the outer part of the card and kind of use it as a mini-SIM to standard SIM adapter.)

    • Dragon88 / about 8 years ago / 1

      True, but if you want to get really specific in wording, then the T-Mobile card is not a "SIM card" at all. It is a Universal Integrated Circuit Card (UICC) running multiple SIM applications on it. However, most people just call it a SIM card because that's what we all got used to from GSM. Also, because the mini SIM was the most common size for a long time, it generally became known as the "standard" size. Few mobile devices use the full credit-card-sized SIM, so most people just think of that as the holder that you snap off your card as soon as you get it.

    • Kamiquasi / about 8 years ago / 1

      Just to clarify slightly further - as in the wild I have only ever seen "SIM card" refer to the small bit that you insert into phones (mini SIM) and I think has become synonymous with it - what DJ Scorch (correctly) refers to as the SIM card is the creditcard-sized card :) Not too many devices that still take full SIM cards, but this adapter certainly wouldn't work if you happened to need that size.

  • Dragon88 / about 8 years ago / 1

    I think it's important to note that these are for adapting a smaller sized SIM card to a larger sized slot. As they were added with the T-Mobile SIMs (standard size), some people may mistakenly get the impression that they can adapt that SIM with this product to a micro or nano slot. Not the case. You can physically cut plastic off of a larger SIM to make it fit a smaller slot, but you run the risk of destroying it.

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