I have a friend who currently has a Sprint BB (Tour) with a SIM card. He's looking to get the Captivate because it has a SIM card slot. I already know of the two different Network Types (GSM vs CDMA), and their different network frequencies. I was just curious if that SIM would work in that phone?
I would highly doubt it. But give it a shot
Sent from my captivate so excuse the spelling mistakes
Thanks, but I also read that the frequencies supported in the BB include the ones supported by AT&T network , 850MHz and 1900 MHz. We will just have to see tho..
No. Sprint & Verizon used CDMA networks. AT&T and T-mobile use GSM. Completely different radios. Square peg/round hole.
Thanks. I understand the CDMA/GSM differences, just thought that the SIM would support GSM networks and with the Captivate being a GSM phone, it would just work. But w/o an AT&T account, that just really wouldn't work out.
ddpacino said:
Thanks. I understand the CDMA/GSM differences, just thought that the SIM would support GSM networks and with the Captivate being a GSM phone, it would just work. But w/o an AT&T account, that just really wouldn't work out.
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Sprint sim in the BB is for overseas use making it a global phone. The sim that is in there should be Vodafone or something like that. It is so it can be used in the UK or accross the pond.
You can have the BB unlocked and put an ATT sim in it and use the edge network but no 3g. But the sim that is in the BB now will not work on ATT network.
xisruno said:
Sprint sim in the BB is for overseas use making it a global phone. The sim that is in there should be Vodafone or something like that. It is so it can be used in the UK or accross the pond.
You can have the BB unlocked and put an ATT sim in it and use the edge network but no 3g. But the sim that is in the BB now will not work on ATT network.
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Negative. It's not for use overseas like Verizon's BlackBerry devices.
The reason for the SIM Card in the Sprint BlackBerry devices is for connection to the old Nextel IDEN network for their push-to-talk system.
What that means is, though, that it will -not- work in a Samsung Captivate because though the IDEN SIM is the same size/shape as a GSM SIM, but they are not even remotely the same. Still square peg/round hole like a previous poster said.
Hi. I am concidering to buy a Galaxy Tab 10.1 from the united states. But i was wondering if it would support the norwegian GSM network ?
Somehow i got the impression that Europe and USA have different types of technologies to connect phones to their carriers..
Becase we have _INSANE_ taxes here in norway, i'm guessing it will be much much cheaper having a friend sending it overseas from the us.
But i need to know if its compatible with norwegian gsm-based network.
Edit: will all tabs be cdma only?
Also: bump
Sent from my GT-P1000 using XDA App
Theres no way they will all be cdma, and what are the networks you use?
Some will be gsm, some not (i think verizon is cdma, tmobile is gsm; gsm needs sim card). Just make sure that the model you buy requires a sim card. Then it will work. Alternatively you could get one from Canada.
It's possible, but consider two things (as above)
1. get a GSM tab (onw with a simcard slot)
2. have it unlocked (sim lock removed)
Gadgetguy2005 said:
Some will be gsm, some not (i think verizon is cdma, tmobile is gsm; gsm needs sim card). Just make sure that the model you buy requires a sim card. Then it will work. Alternatively you could get one from Canada.
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Unfortunately i dont know anyone that lives in canada. I need a friend that can ship it directly to me, with a note attached to it saying "happy birthday" or something to get away with the taxes from customs.
There are two types of GSM Tablets in the US. One is from AT&T, the other T-Mobile.
Both tablets support 850/900/1800/1900mhz bands so if your carrier is on these bands you should have no problem getting it to work. Whether its 3g capable or not, that's a different story as at least in the US only AT&T has the tri band UMTS necessary to get 3g and voice capability.
You can go here to read about sim unlock.
Hey everyone. So i have a question that i can't find on here so im going to ask it. I have a Verizon HTC one unlocked. The sim car works fine and i can do everything on the phone with the T-mobile sim card. The issue is its always Edge data. Is there a specfic APN i have to use? something im not seeing? Does anyone else have this issue? It is a stock factory HTC One, nothing custom.
super-6-1 said:
Hey everyone. So i have a question that i can't find on here so im going to ask it. I have a Verizon HTC one unlocked. The sim car works fine and i can do everything on the phone with the T-mobile sim card. The issue is its always Edge data. Is there a specfic APN i have to use? something im not seeing? Does anyone else have this issue? It is a stock factory HTC One, nothing custom.
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I don't think the Verizon model will have the correct radio frequencies to use T-Mo's LTE or HSPA+ network, hence you're stuck on Edge. If you're staying with T-Mo, I'd suggest selling your current One and buying a T-Mo specific HTC One.
LBN1 said:
I don't think the Verizon model will have the correct radio frequencies to use T-Mo's LTE or HSPA+ network, hence you're stuck on Edge. If you're staying with T-Mo, I'd suggest selling your current One and buying a T-Mo specific HTC One.
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This is pulled from Verizons website
Network: LTE, CDMA/1xEVDO Rev. A (800/1900 MHz)
Global Network: EDGE/GSM (850/900/1800/1900), HSPA/UMTS(1900/2100) aGPS capable for E911 emergency location, aGPS (assisted), sGPS (simultaneous), Standalone GPS, eCompass, GLONASS
T-mobile uses the 1900 Mhz base band and the HSPA as well. So i don't see the issue in that one.
super-6-1 said:
This is pulled from Verizons website
Network: LTE, CDMA/1xEVDO Rev. A (800/1900 MHz)
Global Network: EDGE/GSM (850/900/1800/1900), HSPA/UMTS(1900/2100) aGPS capable for E911 emergency location, aGPS (assisted), sGPS (simultaneous), Standalone GPS, eCompass, GLONASS
T-mobile uses the 1900 Mhz base band and the HSPA as well. So i don't see the issue in that one.
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From what I can tell, nobody uses the dual 1900/2100 to achieve 4G like TMO. The UMTS referred to on that phone is for worldwide use, not US. So while it may have the frequencies, it is not set up to use them like TMO. Your software and firmware are set up to work with Verizon and overseas, not with a competitor like TMO. TMO refers to theirs as HSPA+. However, it might work on the new "reframed" 1900 bands (which is called HSPA), but those are not very highly deployed. Unfortunately, I don't see LTE on that list of frequencies. The TMO LTE is really great. EDIT: I mean TMO LTE, which is also 1700/2100.
I suppose you could try unlocking it and flashing the TMO radio, but there is an entire thread on trying to unlock TMO frequencies (in that case on the developer version), and no one has figured it out yet.
I concur that your best bet would be to sell the phone and get a TMO model.
stevedebi said:
From what I can tell, nobody uses the dual 1900/2100 to achieve 4G like TMO. The UMTS referred to on that phone is for worldwide use, not US. So while it may have the frequencies, it is not set up to use them like TMO. Your software and firmware are set up to work with Verizon and overseas, not with a competitor like TMO. TMO refers to theirs as HSPA+. However, it might work on the new "reframed" 1900 bands (which is called HSPA), but those are not very highly deployed. Unfortunately, I don't see LTE on that list of frequencies. The TMO LTE is really great. EDIT: I mean TMO LTE, which is also 1700/2100.
I suppose you could try unlocking it and flashing the TMO radio, but there is an entire thread on trying to unlock TMO frequencies (in that case on the developer version), and no one has figured it out yet.
I concur that your best bet would be to sell the phone and get a TMO model.
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Yeah thats what im thinking. I need to contact and t-mobile rep and see if the re-farmed LTE here. Ill call and ask.
Alright so i called the rep and he said the area i am has been re-farmed to the 1900 range and i should be getting at least HSPA/3G but im not. Very odd issue
super-6-1 said:
Hey everyone. So i have a question that i can't find on here so im going to ask it. I have a Verizon HTC one unlocked. The sim car works fine and i can do everything on the phone with the T-mobile sim card. The issue is its always Edge data. Is there a specfic APN i have to use? something im not seeing? Does anyone else have this issue? It is a stock factory HTC One, nothing custom.
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Verison use the CDMA, maybe that's why you can only use 2.5G network, just like some phones in China, they only have GSM in common
xunqren said:
Verison use the CDMA, maybe that's why you can only use 2.5G network, just like some phones in China, they only have GSM in common
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yes but this phone has 4g lte already in it which accepts the sim card. Also, i have seen other verizon htc ones with t-mobile and never had a issue. I fell i may have to use a custom rom.
super-6-1 said:
yes but this phone has 4g lte already in it which accepts the sim card. Also, i have seen other verizon htc ones with t-mobile and never had a issue. I fell i may have to use a custom rom.
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What he is referring to is that what Verizon uses as "3G" is CDMA technology. So although they (T-Mobile and Verizon) may be on the same frequency they're using totally different technologies. Just because it has a sim card slot for a Verizon sim doesn't mean the device will be compatible with another carrier's sim. A custom ROM would not resolve this issue. Your best bet would be to sell this device and purchase one from T-Mobile. :fingers-crossed:
jayrivi said:
What he is referring to is that what Verizon uses as "3G" is CDMA technology. So although they (T-Mobile and Verizon) may be on the same frequency they're using totally different technologies. Just because it has a sim card slot for a Verizon sim doesn't mean the device will be compatible with another carrier's sim. A custom ROM would not resolve this issue. Your best bet would be to sell this device and purchase one from T-Mobile. :fingers-crossed:
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I know what the best way to go is but i am very curious as to what is really keeping it from going out of edge. baseband? Is the TMO and Verizon radios the same? these are things i need to know! >.<
super-6-1 said:
I know what the best way to go is but i am very curious as to what is really keeping it from going out of edge. baseband? Is the TMO and Verizon radios the same? these are things i need to know! >.<
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My understanding is that the devices run on different systems for 3G and different LTE bands. You wont get more than GSM compatibility (GPRS, EDGE). Hopefully it is something that a software hack can fix but if you read around all the HTC One forums you will see no one has found it. Right now it is not possible.
jayplusone said:
What he is referring to is that what Verizon uses as "3G" is CDMA technology. So although they (T-Mobile and Verizon) may be on the same frequency they're using totally different technologies. Just because it has a sim card slot for a Verizon sim doesn't mean the device will be compatible with another carrier's sim. A custom ROM would not resolve this issue. Your best bet would be to sell this device and purchase one from T-Mobile. :fingers-crossed:
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My question is that HTC makes phones for all T mobile verison sprint the same, so I believe its just software problem that we cant use Tmobile 4g lte on Verizon unlocked phone. SO does anyone have any comment for that?
aaloknaik said:
My question is that HTC makes phones for all T mobile verison sprint the same, so I believe its just software problem that we cant use Tmobile 4g lte on Verizon unlocked phone. SO does anyone have any comment for that?
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It is hardware not software that is the issue. The T-Mobile variant has different bands than the other variants including Verizon. T-Mobile is a GSM variant while Verizon is a CDMA variant. Here is a comparison of the specs for the variants.
CDMA and GSM technology requires the antenna to be done differently. If they are not programmed to use those signals. Nothing you can dox will change it short of putting a new antenna in.
majmoz said:
It is hardware not software that is the issue. The T-Mobile variant has different bands than the other variants including Verizon. T-Mobile is a GSM variant while Verizon is a CDMA variant. Here is a comparison of the specs for the variants.
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SO how do i know if my phone is Verizon CDMA unlocked or GSM unlocked
aaloknaik said:
SO how do i know if my phone is Verizon CDMA unlocked or GSM unlocked
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Because you can only unlock GSM. Cdma uses the serial/esn number of the device.
Has there been any update on this? I called tmobile and they said it was simply because I couldn't put in the APN. So, there's no chance that rooting the phone and putting a tmobile rom on it would fix the problem and let me get more than edge speeds.
I myself have been wondering the answer to this. The device might seem the same but under the cover they are different. The actual daughter board which the camera, vibrating thing, volume rocker, power button are connected to are fairly different from each other. The CDMA variant is not compatible with the GSM variant. Not even by adding a CDMA daughter board to the GSM motherboard and vice versa, the are made quiet differently and will not be able to use GSM bands on a CDMA m7
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It was briefly discussed before just want to clarify, there are plenty of GSM versions of Note 4, I have T-Mobile so would like to know which ones aside of SM-910T would work. I can verify that AT&T SM-N910A works fine, what else is good?
SM-N910R4 US Cellular not sure whether they are GSM
SM-N910P Sprint has a SIM card slot not sure what they are...
SM-N910V Verizon has a SIM card slot not sure what they are...
There is also SM-N910W8 (other Canada and PR GSM operators)?
toshik1 said:
It was briefly discussed before just want to clarify, there are plenty of GSM versions of Note 4, I have T-Mobile so would like to know which ones aside of SM-910T would work. I can verify that AT&T SM-N910A works fine, what else is good?
SM-N910R4 US Cellular not sure whether they are GSM
SM-N910P Sprint has a SIM card slot not sure what they are...
SM-N910V Verizon has a SIM card slot not sure what they are...
There is also SM-N910W8 (other Canada and PR GSM operators)?
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As far as the Verizon and Sprint versions go, I am not sure if they support falling back to GSM/UMTS when no LTE coverage is available. These providers never used GSM/UMTS for their 2G/3G networks instead they used CDMA so that is probably what these phones support. Most likely the N910T or the AT&T version of the Note4 will be your best bet for on the T-Mobile network. A quick google search for US Celluar says that they also used CDMA, so their variant is probably in the same boat as the Sprint/Verizon phones. If you are really looking for something different look up the Note 4 Duos, was a dual sim phone released in Hong Kong and possibly other variants in Asia. My understanding is it only supports LTE/3G/2G on one SIM and 2G only on the 2nd SIM however.
d0ug said:
as far as the verizon and sprint versions go, i am not sure if they support falling back to gsm/umts when no lte coverage is available. These providers never used gsm/umts for their 2g/3g networks instead they used cdma so that is probably what these phones support. Most likely the n910t or the at&t version of the note4 will be your best bet for on the t-mobile network. A quick google search for us celluar says that they also used cdma, so their variant is probably in the same boat as the sprint/verizon phones. If you are really looking for something different look up the note 4 duos, was a dual sim phone released in hong kong and possibly other variants in asia. My understanding is it only supports lte/3g/2g on one sim and 2g only on the 2nd sim however.
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att note 4 can't be rooted
I cannot actually find an answer. I see there is a version of the S10 for US Cellular, but it's not clear if I can have US Cell be my main one, and Cricket or AT&T in the second slot and have it all work.
I went to bestbuy, they didn't know if an unlocked one could, went to US Cellular, they didn't know. I'm having a hard time finding the answer to this question.
I used cricket and tmobile on Exynos s9 dual sim before with no problem, but US cellular is cdma, right?
Samsung Galaxy doesn't offer a virtual SIM similar to iPhone, you'll need a Dual Sim International variant. Model number SM-G975F/DS is the Dual SIM's with Exynos Chipset. It's available on Ebay. This model breakdown may help.
https://www.techwalls.com/samsung-galaxy-s10-plus-model-number-sm-g975-differences/