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Is the sim card build in fixed or can you use your own ?

I wonder wether the sim card will be fixed in the car or wether you can slide in your own. In Europe, there are a lot of providers and each has it's own data plan. So it would be very disadvantageous if you are stuck to a fixed provider. Anybody checked this with a rep from Tesla ? And if the sim card can be exchanged, where is the slot located then ?

How about wondering if it uses SIM card tech first? That isn't a given you know.

So long as I can link/pair/whatever to my phone and use it as my cars connection, I won't care.

@Vawlkus, I read somewhere that they are using AT&T for the cellular data connection which means it would be SIM based.

I also would pair or use my phone's tethering feature rather then pay another bill to the Deathstar.

In Europe we don't have CDMA, only GSM, i.e., at least the European version must use a SIM card. I would be very surprised if the choice of contract/SIM card is not up to the user, with possibly Tesla offering some standard contract+SIM option, but I have not yet heard or read anything specific or official in that regard.

The downside to depending on your phone's connection of course is that unless your car is parked somewhere within range of and connected to a wifi network, you won't be able to communicate with it when you are away.

I prefer to think of that as added security. If my phone has to be near the car for it to be attacked via the web, then by extension, I have to be near my car in order for someone to try and attack it remotely.

Sure, it'll mean I won't be able to 'prepare' my cars interior as long as someone else could, but I'm ok with that.

On the other hand, if someone is attacking your car's exterior (a harried shopper mindless dinging your door for example, or an angry Oil Company exec pouring 10W40 on it), sensors could detect it and alert you right away so you can see the guilty party (via the HD backup camera or other strategically placed cameras) and plan your revenge.

Seems like the right approach is to start with a phone based connection. I'd like to use the MiFi on my phone and WiFi on the Tesla. If having the car be always connected turns out to be worth the cost of a data plan ($50/month ?) Then I guess I could always upgrade.

But the thought of two data plans just seems outlandish.

There's something not quite thought out about the communications on the model S. Tesla announced it as 3G when anyone paying half a lick of attention would know that 4G LTE would be prevalent by launch.

What would be great is a minimal data plan for alerts and such including break-in attempts by angry oil execs.

I propose that we set up some kind of neighborhood watch, composed of Model S owners, grateful (and/or greedy) electric utility company executives, and greens to keep watch over our electric cars and immediately report any oil company execs we see loitering around to George Zimmerman!

So has anyone found the SIM card location?
2 data plans would just be silly and I like my t-mobile

I don't think it has a SIM card, I don't think it has anything to do with AT&T. Otherwise if you compare a speed of internet service on IPhone 5, you will see that it ten times faster than on Tesla S.

@ylyubarsky iPhone 5 uses LTE while Tesla still uses "3G" which can include UMTS and HSDPA. Just because Internet on the Model S is slower than an iPhone 5 doesn't imply AT&T or not. Besides, there are Verizon & Sprint versions of iPhone 5 that are also way faster than the Model S browser.

FWIW... if the Model S is using GSM / UMTS, there *must* be a SIM card somewhere. The cellular authentication protocols all depend on credentials on a hardened SIM card. Believe me that Apple has tried really hard to build a SIM-free AT&T iPhone but even they must settle for lobbying a nano-SIM standard instead.

@Vawkus - I regularly use the phone app to start charging or climate control on my LEAF when I am not near it, so I would definitely want the ability to do that with the Model S (eventually), rather than requiring the car to use my phone for data connectivity.

I compared IPhone 5 and IPhone 4S speed wise. IPhone 5 is way faster although they both have 4G. So why is it a problem for Tesla to have an identical system like IPhone 5 and everybody would be happy!

Whatever is being used, it's painfully slow. I have ATT on my Windows Phone 8 running 4G and it's running circles around the loading times on the Tesla. My phone is also a hotspot in itself - I would love to be able to just Wifi to it and have only one data plan.

@ylyubarsky: The iPhone 5 has LTE (4G). The iPhone 4s and Model S both have 3G (HSDPA+). Why they went for 3G instead of 4G in the Model S I couldn't say.

Volker.Berlin wrote:
"In Europe we don't have CDMA, only GSM, i.e., at least the European version must use a SIM card. I would be very surprised if the choice of contract/SIM card is not up to the user, with possibly Tesla offering some standard contract+SIM option, but I have not yet heard or read anything specific or official in that regard.In Europe we don't have CDMA, only GSM, i.e., at least the European version must use a SIM card. I would be very surprised if the choice of contract/SIM card is not up to the user, with possibly Tesla offering some standard contract+SIM option, but I have not yet heard or read anything specific or official in that regard."
In Europe we have differnt dataplans for each country and provider and for people living near a boarder or for travelling between countries it can be quite expensive on roamingfees
so I like to know what will be not funktioning in your car when 3G GSM is switched off

Wouldn't they be better off using a USB modem, since they have a USB host capable computer on board already? That way they can change the data device to match any local environment they want, and it would allow for upgrading to next generation technology.


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