Carrier challenge in the USA – Offering two SIM cards for one phone number

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Over the last couple of days I have been tweeting and discussing with my international friends about a solution that we are really missing here in the USA, in comparison with Europe or other Asian countries:

“ Two SIM cards for one mobile phone-number.”

Since I immigrated to USA from Europe,I have had to make a daily decision about which phone I would put my Subscriber Identity Module (SIM) card in. The carriers in Europe allow you to have two separate SIM cards that use the same phone number.

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A brief history

How did that start? Many cars in Europe had an integrated car phone system as an option before Bluetooth car kits were on the market. It was a convenience to pop a second SIM card into the vehicle and be able to make and receive phone calls on the same number as the user’s mobile phone, without changing any phone numbers. But of course, there were some constraints:

  1. The phone that was turned on first  – and registered to the network –  was able to receice and make calls;
  2. If you turned on your car (the 2nd SIM card) without turning off your phone - the car phone could only make calls, while the mobile phone would still receive the incoming calls.

The easiest way to keep things straight was to make sure the first phone – the mobile phone was turned off before starting the car.

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Current situation (in the USA)

These days, most of us use Bluetooth enabled car kits, and it is not necessary to have a second SIM card for safe vehicle use anymore. However … many people have multiple phones. Smartphones are now quite prevalent, but sometimes you don’t want to carry your most complicated phone everywhere you go.

For instance, I like to carry a smaller phone on me during the weekends while on the road with my kids. The hassle now is to get my SIM card out of one phone and place it in the other. And we all know how frustrating it can be to do so. It would be so much easier to have a duplicate SIM card already placed in my second phone…

My good friend Remo Knops is a hobby road cyclist, who lives in the Netherlands (Western Europe). During his sports activities and cycling trips he likes to use an older more shock- and waterproof phone which he can use in emergencies. Remo has a Vodafone subscription, and he had no trouble buying a second SIM card – using the same mobile number – for an additional one time charge of about  € 12,-. When Remo is going to ride his bike, he simply turns off his HTC Snap and turns on his “sports” phone.

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Concluding thoughts and wrap-up

The main question here is: “If the carriers in Europe can offer two SIM cards for one mobile phone-number, then why can’t the US carriers?”

If AT&T and T-Mobile, the two main GSM carriers in the US, would add a second SIM card option onto their service plans, they would be offering a convenient service which would help them draw customers away from the US CDMA carriers  (Verizon and Sprint).

We realize that this is not a service everyone needs, but with so many people using multiple phones, it would be such a convenience. Please let us know what you think about this topic by filling in the poll below:

Edit: This poll will now be used for the UK Carriers as well.

Would you like to see a major US carrier offer a dual SIM solution as some of the European carriers do? If so, which logo would you like to see on the grey SIM cards above – AT&T or T-Mobile? Your input is appreciated, and we hope that you will follow the MobilityMinded website and twitter accounts to find out how this topic continues. A great many thanks for your cooperation and comments!!

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About Johan van Mierlo

Johan van Mierlo has been writing and reviewing for the online communities since the launch of the handheld computer Palm IIIe and Compaq iPaq in 1998. He owned and tested many mobile devices including Windows Phone, Windows Mobile, Palm, Symbian, Android, Apple iOS iPhone, iPad and many different GPS and other Mobile products.

Johan was awarded MVP Windows Phone Consumer (Previous MVP Windows Phone and MVP Windows Mobile Devices) by Microsoft in 2008, 2009, 2010, 2011, 2012 and 2013 for his community activities.

You can follow Johan on Twitter

  • http://www.pocketpcfaq.com Chris De Herrera

    I too would like to have 2 SIMs for my phone number. However we have the following issues and options:
    1. Sprint and Verizon do not use SIM cards so to support SIM cards would require major changes to hardware and their networks. This is very unlikely to occur in the near term.
    2. AT&T and T-Mobile do offer SIM cards and they do not currently offer the ability to have 2 SIM cards with one phone number. They could offer this if they modified their network to support it.
    3. AT&T and T-Mobile offer family plans where you can have multiple SIMs on a single account at a low price. For T-Mobile you can get a family plan where the cost to add a 3rd SIM is as little as $5.00. These plans also include voice, SMS and data depending on what you want.

    So here in the US there are other challenges and options.

    Chris De Herrera
    http://www.pocketpcfaq.com

  • Pingback: Carrier challenge in the USA – Offering two SIM cards for one … Mobile CHN

  • Jim Thibodeau

    Why is it impossible to have a SIM card for the CDMA networks?

  • Pingback: US Carriers: Make Multiple SIMs a Reality! | windows mobile apps

  • http://ivyworldwide.com Geoff

    It’s funny how the US is so far ahead in some areas and so far behind in others. The phone companies seem to focus on provisioning and billing more than discovering how customers want to use the services.

    Question: If you lose one sim do you have to replace both then?

    • http://www.mobilityminded.com Remo Knops

      Hi Geoff,

      “Question: If you lose one sim do you have to replace both then?”

      Let me explain. When I first subscribed to Vodafone, they gave me one SIM card. When I bought the “two-sim-solution” you get two new simcards with your number activated on these, and replacing the initial first subscription simcard.

      I assume, since this never happened to me, that a carrier will probably replace them both. Simply to avoid problems or fraude, but that are my personal thoughts and I could be wrong with this assumption. :)

      // Remo Knops

  • WMH

    It’s not impossible for CDMA to use SIM cards, the CDMA standard has supported smart cards for nearly a decade now. However for legacy and business reasons, the North American CDMA operators have not used them. Most CDMA operators outside of North America do use smart cards.

  • http://antoinerjwright.com ARJWright

    I was almost not in favor of this; and this weekend I started reviewing the N900. I have an N97, it would have been great to have two SIMs with one number for both so that I could swap easier. I’m convinced that this could work, and very well – just not for everyone. Unfortunately, a carrier would easily turn something like this into an enterprise-only feature where you are charged for an additional-half line, and then the device would have to be one in their system, and not an unlocked device sold off the carrier deck.

    • http://www.mobilityminded.com Remo Knops

      Hi ARJWright,

      ” [...] it would have been great to have two SIMs with one number for both so that I could swap easier. I’m convinced that this could work, and very well – just not for everyone”

      This is exactly the goal of this article, and you could read a personal scenario why I ride my road bike. However it is strange that in the Netherlands all carriers offer this second sim card solution for a small one time fee.

      You are right that probably not everyone wants to have this feature, but at this point it isn’t even offered in the US.

      So let’s investigate …

      // Remo Knops

  • Sajid

    I have two sim option in Dubai. can I use both of them in UAE while roaming ?

  • Sajid

    I have two sim option in UAE can I use both of them in USA while roaming

  • CParticle

    You know It would be nice to get something like this pushed through just to open the door for more customer feedback. I don’t have a need for this but the reverse would be far more interesting getting multiple numbers/accounts on one sim card. One work provided and one personal. I think many more people would benefit from that.

  • iain ponton

    I would love two sims. When i go out..instead of taking my iphone..I can take one of my cheepo cell phones and leave my shiny iphone sitting charging in the house.Fab!

  • kumar

    super plan

  • Matthew

    I see something called “empty SIM card”, and they could be carry original SIM card’s info. I am wondering if 2 SIMs 1 number will work by that….

  • Andrew

    ot possibe in the usa for one reason. Greed. They rather have u buy 2 seperate plans. They do this with tablets. How dare u leech off ur phone data plan. U kust buy a seperate data plan for ur tablet.