How come Sprint doesn't use a sim for their LTE? Is the sim even necessary or is to bring global usage to the Verizon version?
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The SIM card is used for 4g. 3g and voice is over the cdma radio. And sprints does have a SIM if I'm not mistaken it's internal tho and cannot be accessed.
The biggest problem with the "non-removeable" sim setup that Sprint uses is you can't just pop it out & stick it in another phone.
I do this all the time with my VZ sim card.
billard412 said:
The SIM card is used for 4g. 3g and voice is over the cdma radio. And sprints does have a SIM if I'm not mistaken it's internal tho and cannot be accessed.
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thats for sprint? it looks like verizon its all handled through the sim for both lte and 3g.... right?
As far as I know its just the lte that needs the SIM. Now of course the phones are made to not function w/o them but I'm pretty sure it's only the 4g that actually relies on it
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If I lost my 4g SIM card, could I still operate my 4g phone with voice/3g with a SIM?
Lets say I swap the ESN on my phone line from a 3g phone, to a 4g phone, but I don't have the SIM for the 4g phone. What can and can't I do with the new 4g phone?
squarepush3r said:
If I lost my 4g SIM card, could I still operate my 4g phone with voice/3g with a SIM?
Lets say I swap the ESN on my phone line from a 3g phone, to a 4g phone, but I don't have the SIM for the 4g phone. What can and can't I do with the new 4g phone?
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Nothing. You need the 4G sim.
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tjohnsonjr said:
Nothing. You need the 4G sim.
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If this is correct, then the SIM card is not just a 4g card, its a complete lock-down/control mechanism by Verizon.
So, then my next question is, why do they limit this to 4g phones? Why not all phones? Since the purpose isn't solely 4g security.
If I put my Verizon 4g card into a different Verizon 4g phone, does that automatically activate it on my account (similar function to ATT/TMobile SIM card), so what I'm saying is, there is not specific phone linked to your account, instead its a SIM card linked to your account. So, say I switched SIM's with Droid Razer with my girlfriends Thunderbolt, does it automatically switch activations/phone number/etc ?
I am pretty sure it works without the 4G sim. Because people used to take the 4G sim out to save battery I thought in the tbolt before it could be turned off via software.
ok, I think this answers a lot of my questions. Apparently, it is like a GSM sim
http://forum.xda-developers.com/showthread.php?t=1122218
Swapping SIM's will change your activation automatically.
From what I've read, you can pop a Verizon 4G sim into pretty much any unlocked LTE capable device and have it work.
Now I'm guessing this is going to be a no, but...
I got an Airtel 3G Data card (specifically the Huawei E1731) when I went to India and unlocked it, if I remember correctly it kept swapping from CDMA and GSM signals. Now if I pop the Nano SIM I got with my iPhone 5 into this data card, (I'll try to make my self a Nano SIM to SIM adapter) is there any chance of it working?
I've also heard if things like the 4G sim being deactivated when you swap to a 3G device. But wouldn't putting it in a 3G device be the same as using the iPhone 5 with LTE turned off?
And is there any chance of Verizon messing with my data plan if I put the sim in the data card and start using it with my laptop?
I just saw a a video of someone putting a nano sim in an iPhone 4s and it working so I think this should at least work on the data card, still worried about the Verizon side of this.
Also I just remembered something about different frequencies, would the fact that the data card is from India affect my ability to use it?
Actually, I'm pretty sure Verizon SIM cards are only for their devices. I don't think they work otherwise
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gagdude said:
Actually, I'm pretty sure Verizon SIM cards are only for their devices. I don't think they work otherwise
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I've read from a few different reliable sources, don't have any links on hand. But its the phone that is locked to a carrier, not the sim that is locked to the phone, so as long as the device is unlocked and has the required hardware, it should work with that sim.
In verizons case, at the very least the LTE should work with an LTE device, I'm not sure about voice, 3G, and 2G.
In that case you wouldn't get 3G on other phones, since the SIM cards Verizon has are for 4G LTE only, their 3G networks are CDMA and thus built into the phone.
LTE is a GSM technology which is the only reason they use SIM cards at all
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gagdude said:
In that case you wouldn't get 3G on other phones, since the SIM cards Verizon has are for 4G LTE only, their 3G networks are CDMA and thus built into the phone.
LTE is a GSM technology which is the only reason they use SIM cards at all
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That is what I was thinking, but the data card seems to have both CDMA and GSM bands and when I pop out the LTE sim from my phone I lose all signal not just LTE.
Now what I'm thinking is that, since the SIM holds all the Account info, etc, not just 4G related things, that if I pop it into the 3G data card, (I've seen Iphone 5 SIM be put into a 4s and work) that it should work. That is if the Data card is compatible, which I'm not 100% sure on.
The SIM in a GSM phone holds all the account information. The SIM in a CDMA phone is for data only - the phone will work for voice/text without it. The SIMs are different software/wise.
Rukbat said:
...The SIM in a CDMA phone is for data only - the phone will work for voice/text without it....
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That's what I initially thought but, If that's true than why is my iPhone 5 not able to use Data, voice, or text without the SIM inserted?
I'm not to worried about it not working, the thing I'm concerned about is verizon messing up my plans if I try using the sim in a data card.
I currently am using my nexus 5 (unlocked from Play Store) on sprint and I will be going out of the country for a couple weeks and want to use a local SIM card when I get there. I have a couple questions.
1) what do I need to do to switch from Sprint CDMA and LTE SIM to a foreign GSM SIM?
2) once I get back in the country what do I need to do to switch from the from the foreign GSM SIM back to my Sprint CDMA and LTE SIM
Just simply swap the sims.
That's it? No changing anything in the settings or calls to sprint? Seems too good to be true. Glad I chose a Nexus!
dplcj said:
That's it? No changing anything in the settings or calls to sprint? Seems too good to be true. Glad I chose a Nexus!
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Um.... Not sure how this would work considering sprint doesnt use sim cards?
brokenbmx06 said:
Um.... Not sure how this would work considering sprint doesnt use sim cards?
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Sprint dose have a SIM card for LTE on the NEXUS 5.
I just bought a Verizon GS3 on craigslist, but it didn't come with a sim card and in my ignorance I didn't know it needed one. I don't have a verizon account and I want to use this phone on pageplus. So is a sim card necessary, or can I get a sim card somewhere without having a verizon account?
It's an LTE sim card. Not a true sim card. It's still a CDMA phone.
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dmginc said:
It's an LTE sim card. Not a true sim card. It's still a CDMA phone.
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Sorry for my ignorance, but I have no idea what this means. Can I use this phone without a sim card in it on pageplus?
joelshort said:
Sorry for my ignorance, but I have no idea what this means. Can I use this phone without a sim card in it on pageplus?
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I'm not sure if pageplus uses sim card or CDMA phones. For example, at&t is all GSM (sim card), their phones won't work on Verizon (CDMA) and vice versa.
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Pageplus is CDMA, it uses Verizon's network. Without a sim card in the phone it doesn't seem to be able to find a network...but what do I know
dmginc said:
I'm not sure if pageplus uses sim card or CDMA phones. For example, at&t is all GSM (sim card), their phones won't work on Verizon (CDMA) and vice versa.
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You can have this phone on gsm. If you put a normal sim into the lte sim slot you can use other networks. The downside is you will not get 4g or in some cases you wont even get 3g.
ThePagel said:
You can have this phone on gsm. If you put a normal sim into the lte sim slot you can use other networks. The downside is you will not get 4g or in some cases you wont even get 3g.
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So you can 'technically' have it on gsm.
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I have a straight talk S3 (Verizon based) and a cricket sim card. How do I make the cricket sim work in the phone?
XxInSaNeClOwNxX said:
I have a straight talk S3 (Verizon based) and a cricket sim card. How do I make the cricket sim work in the phone?
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You need a CDMA SIM from any CDMA carrier and it will work as soon as you put it in, then you set your APNs to Tracfone APNs.
If your Cricket SIM is a GSM SIM then it won't work, it MUST be a CDMA SIM.
Verizon CDMA LTE SIMs are only $3-5 on eBay. I'm sure you can afford the price and the wait while it is mailed to you.
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I used a friend's Verizon Galaxy SIII at one point... kind of... it took a while to detect the network each time the phone started up and it was only EDGE/2G
So, it works for phone calls and very slow data... might be okay if you're usually on wifi, but it's really better to just have a phone that is compatible with Cricket's HSPA+ 3G and 4G LTE network(s).
vdoug said:
I used a friend's Verizon Galaxy SIII at one point... kind of... it took a while to detect the network each time the phone started up and it was only EDGE/2G
So, it works for phone calls and very slow data... might be okay if you're usually on wifi, but it's really better to just have a phone that is compatible with Cricket's HSPA+ 3G and 4G LTE network(s).
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They are asking about the SIM because they have a straight talk s3 and that device has to use Verizon S3 ROMs and that makes the Straight Talk S3 require a SIM to have working mobile data, it won't work without the SIM. They weren't asking if they can use a Straight Talk S3 on Cricket network.
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