Hi Guys, dose anyone have any idea if the samsung Epic 4G for sprint supports GSM networks??
as I know it's 4G phone for sprint, works on Wimax networks, and I heard that it's GSM capable as well, is that true?
Thx
I hope that's true... but I think It hasn't a sim slot
Isn't sprint a cdma Telco? Otherwise you'll be hearing ppl like me buying the epic and using it I'm aus. I would love a gsm sgs with kb
Sent from my Apple Newton 2100
I'm pretty sure it's not. Sprint are CDMA (and their "4G" is WiMax). Their phones do not normally have any GSM capabilities.
Epic 4G General Forum
No, it does not have GSM. It's CDMA only and specifically (at least currently) U.S. only.
ConceptVBS said:
No, it does not have GSM. It's CDMA only and specifically (at least currently) U.S. only.
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Actually, the Epic 4G is CDMA/WCDMA capable. WCDMA being a hybrid of different GSM technologies. If you go into the Phone Info Test Mode (*#4636*1111#) > Phone Information, you can see how to change how the phone's radio interacts with different cell towers in the area. While in the US, there's no point in having WCDMA on because there are no WCDMA service providers here. However, when you go overseas... well, you get the picture.
The only reason this phone really isn't strictly GSM capable is because the radio isn't compatible, and there's no room for a SIM card to contain GSM network subscriber data.
"W-CDMA (Wideband Code Division Multiple Access), UMTS-FDD, UTRA-FDD, or IMT-2000 CDMA Direct Spread is an air interface standard found in 3G mobile telecommunications networks. It is the basis of Japan's NTT DoCoMo's FOMA service and the most-commonly used member of the UMTS family and sometimes used as a synonym for UMTS.[1] It utilizes the DS-CDMA channel access method and the FDD duplexing method to achieve higher speeds and support more users compared to most time division multiple access (TDMA) schemes used today.
While not an evolutionary upgrade on the airside, it uses the same core network as the 2G GSM networks deployed worldwide, allowing dual-mode operation along with GSM/EDGE; a feat it shares with other members of the UMTS family."
--http://en.wikipedia.org/wiki/W-CDMA_(UMTS)
Related
This broke my heart... and I work for T-Mobile. Why on earth would HTC/SE make a phone that practically every company in the world can use with 3G, but not T-Mobile!? Frustrated.
gregnm369 said:
This broke my heart... and I work for T-Mobile. Why on earth would HTC/SE make a phone that practically every company in the world can use with 3G, but not T-Mobile!? Frustrated.
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Then why don't you blame T-mobile for building their 3G network on 2100mzh while there others are using 850/900/1900 for YEARS?
jackleung said:
Then why don't you blame T-mobile for building their 3G network on 2100mzh while there others are using 850/900/1900 for YEARS?
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AT&T is 2100mhz... T-Mobile USA is 1700mhz
Uh...ATT is 850/1900, FYI. Tmobile is 1700/2100 both, not either or.
jvs60 said:
Uh...ATT is 850/1900, FYI. Tmobile is 1700/2100 both, not either or.
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That's strange. A G1 is unlockable to ATT, but only supports UMTS 1700/2100. The G1's in our store access 3G just fine. My X1i won't access anything but EDGE (not 3G). Since the G1 supports 1700 and X1i does not, this is the logical deduction that the X1i doesn't support the same standard that the G1 does which is T-Mobile USA 3G
gregnm369 said:
Why on earth would HTC/SE make a phone that practically every company in the world can use with 3G, but not T-Mobile!?
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hmmm... let me state it upside down:
"Why on earth would T-MOBILE chose a band NOT USED BY ANY OTHER COMPANY IN THE WORLD ??"
Sounds better this way
Or... you can say it like this:
"Why on earth would HTC/SE or ANY other phone maker include in all their phones a band that is ONLY USED by T-MOBILE ??"
This one is even worst
PS: It's true, T-Mobile is the ONLY operator using the 1700+2100 martian band don't blame phone makers
And beware: it is NOT "1700 & 2100" but "1700 PLUS 2100" (one band for uplink and the other band for downlink)
SUCH A FREAK !!
gregnm369 said:
AT&T is 2100mhz... T-Mobile USA is 1700mhz
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Are you kidding me that you are working for a carrier and you don't even know what bands your company (or your competitor) is using? I am starting to understand why you would blame the phone manufacture now ....
Why would HTC/SE make a phone that practically every company in the world can use with 3G, but not T-Mobile?
Why would T-mobile chose a 3G band (1700+2100mhz) not used by any other company in the world?
It's really quite complicated, so I'll keep it simple (although the details won't be very clear).
It's neither HTC/SE nor T-mobile's fault. Unlike in Europe, the American government (FCC) does not define or reserve specific bands (1900mhz, 2100mhz, etc) for specific technologies (GSM, UMTS, CDMA, etc). The US government also does not want to reallocate bands that are already being used, even if it's for older technology. Since VoiceStream (Tmo before Deutsche Telekom bought it) didn't have any money to buy spectrum in advance for 3G, that pretty much means that T-mobile has had to settle for whatever bands are leftover.
T-mobile wanted to keep their US 3G bands the same as in Europe, but the lower half (uplink) is already occupied by another technology (which the FCC cannot or will not vacate). So the only choice was to launch 3G on the 1700+2100mhz "AWS" band, or have no 3G at all. And without 3G, AT&T would have a monopoly on UMTS, Tmo would lose business with only 2G, and we as customers would suffer in the long run (especially since without competition, AT&T could keep its prices artificially high).
For the other points, contrary to popular belief, Tmo is not the only carrier in the world that runs a UMTS network in the 1700mhz range. Carrier e-Mobile in Japan runs a UMTS 1700 network. It is slightly different than Tmo's AWS because e-Mobile uses 1700-uplink/1800-downlink (UMTS Band IX) while Tmo uses 1700-uplink/2100-downlink (UMTS Band IV) and is therefore still incompatible. However, as with the G1, it is fully possible to build a radio that can switch between "overlapping" modes (eg: 1700+2100 and 1900+2100* on the G1), it just isn't very cost-effective to make those radios at the moment.
*1900+2100 does not mean AT&T's UMTS 1900mhz network. It's 1900mhz uplink and 2100mhz downlink, and you can see the specific frequency differences here (UMTS Bands I and II).
Keep in mind (and this is a more general point): GSM started off with most phones being only dual-mode (900/1800mhz or 850/1900mhz), but after the technology matured tri- and quad-band radios became commonplace, and now quad-GSM phones are found everywhere. In time we might see a penta-band (850/900/1700/1900/2100) "global" UMTS radio become standard on all phones -- just not with the X1. Then again, by the time we see penta-radios, we will move on to 4G, and with the current split between WiMAX and LTE, we will probably have these same headaches all over again.
So if you want someone to blame, blame the FCC for being unable or unwilling to harmonize the US wireless spectrum with other global standards. Tmo, HTC, and SE are merely just trying to play the cards dealt to them.
--
You might also stop to consider: it is still possible for SE to release a Tmo-capable X1 (let's call it the X1t), but the only advantage is that it would work with Tmo, and thus only Tmo customers would buy it (unlike the X1a which can work with any 850/1900/2100mhz carrier, not just AT&T). That makes it cost-prohibitive at the moment. Furthermore, since it would be sold in the American market, the Qualcomm patent restrictions would still apply, and you would end up with the MSM7201A processor which many X1a users have been complaining about. There is just no perfect answer.
Thank you for clarifying. I learned something from that.
I'm just curious if there's anyone out there with an HD2 on Verizon? If not, is it possible to do it? The HD2 is a quad band device, so doesn't it have the hardware capable to be on a CDMA network? I was thinking that if I bought an unlocked HD2, I would be able to put it on my account with Verizon. I guess I would have to be running a different radio in order to do that though.
Anyone have any thoughts, comments, suggestions? I really want one of these phones, but I can't switch from Verizon because no other provider gives me 3g in my area. Plus, my Touch Pro 2 is getting dated compared to that 1gz Snapdragon!
HD2 is a GSM phone. Pretty sure it can't be made to work on a CDMA network.
Technology
GSM: 850/900/1800/1900 MHz
WCDMA/HSPA: 1700 MHz (AWS) / 2100 MHz
Taken from the HD2 tech specs on HTC's website.
If it has a CDMA radio, why couldn't it work if it were unlocked?
Does Verizon have a sim card to put in the phone? If not, how can they make it work on their network.
Verizon does have sim cards, they use them in the Blackberry Storm, which is both GSM/CDMA ...
But It may be like the storm if it is activated via the IMEI that it may not require a sim card ...
rly? i never thought verizon would use sim cards...can we bring non verizon phones them from lets say ATT to their network?
Verizon has SIM cards for their GSM/CDMA world phones. Sprint also has world edition blackberries with a SIM card. The SIM card is there so the phone is able to roam onto a GSM network outside of the USA. As far as I know this SIM card will not allow it to roam onto a USA GSM network, since there are no roaming agreements in place between VZ and ATT/TMO
The WCDMA on the HD2 is not the same as CDMA that VZ/Sprint use.
WCDMA is the 3G standard that GSM providers use. CDMA is well as far as i know the same old CDMA network that VZ/Sprint have used for ages with whatever "bolt on" enables 3G on their network. I dont follow the CDMA standard so i dont know all the specifics about the tech.
Edit:
I just did a small amount of wikipedia research. What Verizon/Sprint use is CDMA2000/EV-DO
http://en.wikipedia.org/wiki/CDMA2000
http://en.wikipedia.org/wiki/Evolution-Data_Optimized
This is not compatible with WCDMA,
Even though they both use "CDMA" family of technology http://en.wikipedia.org/wiki/Code_division_multiple_access
WCDMA is a wideband version http://en.wikipedia.org/wiki/WCDMA
Thanks for the replies guys. This is a bummer though. I was really hoping to be able to get an HD2 to use with Verizon. Oh well, guess I'll wait for the Droid X to release, even though I'd like to stick with WiMo.
the UK tech support told me that it is nothing to do with the Band Frequencies in the US ?...it is the package coding differently......?
The rest of the world is using GSM...... ? While the US using multiple coding encryption......?
So nothing to do with the Band Frequencies ????? but the CODING itself ???? WTF ??? and regrettably the Tab isn't capable of it......in the US........
So basically they are saying this phone is GSM only.....not UMTS....
Whatever you've been told, it's a load of confused nonsense!
T-Mobile and AT&T in the US are GSM networks supporting UMTS. The technology is *exactly* the same as any other GSM network outside the US, but does use different frequencies for 3G. So, it *is* the frequencies that are the problem when it comes to Euro Tabs on T-Mobile.
Verizon and Sprint use CDMA technologies, which stands for Code-Division Multiple Access, and is completely incompatible with GSM.
Regards,
Dave
Hi all,
I have an unclocked Samsung Galaxy Note I9228 from China Mobile. I was hoping to use it on At&t's 4g network but am currently only getting the edge network. I have read news articles talking about the radio chipset:
"Spreadtrum's SC8803G enables TD-SCDMA, EDGE, GPRS and GSM operation and supports TD-HSDPA at 2.8Mbps and TD-HSUPA at 2.2Mbps." - Streetinsider.com
Does anyone know if I can receive At&t's 4G network? If so, what are the steps to configure the device? Thanks in advance!
That's a TERRIBLE 3G data rate...!
If the 3G speeds are not that great, does this mean that the I9228 cannot support 4g?
ohnanoko said:
Hi all,
I have an unclocked Samsung Galaxy Note I9228 from China Mobile. I was hoping to use it on At&t's 4g network but am currently only getting the edge network. I have read news articles talking about the radio chipset:
"Spreadtrum's SC8803G enables TD-SCDMA, EDGE, GPRS and GSM operation and supports TD-HSDPA at 2.8Mbps and TD-HSUPA at 2.2Mbps." - Streetinsider.com
Does anyone know if I can receive At&t's 4G network? If so, what are the steps to configure the device? Thanks in advance!
Click to expand...
Click to collapse
The "TD" refers to Time Division multiplexing as opposed to the Code Division multiplexing used by UMTS/HSPA standards in other parts of the world, including AT&T. Specifically, TD-SCDMA and TD-HSDPA, are both proprietary technologies developed exclusively by and for China. There is nothing that you can configure on your device to make it compatible with AT&T's 3G/4G network; it simply lacks the required compatible hardware. Buy an N7000. That's your solution. Sorry.
Jade Eyed Wolf said:
The "TD" refers to Time Division multiplexing as opposed to the Code Division multiplexing used by UMTS/HSPA standards in other parts of the world, including AT&T. Specifically, TD-SCDMA and TD-HSDPA, are both proprietary technologies developed exclusively by and for China. There is nothing that you can configure on your device to make it compatible with AT&T's 3G/4G network; it simply lacks the required compatible hardware. Buy an N7000. That's your solution. Sorry.
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Click to collapse
No worries. Thank you so much for a quick answer! I appreciate the complete picture/ background/ history as well. You saved me a lot of time researching the problem and visiting the AT&T store.
Will the N7000 support AT&T's 4G network?
ohnanoko said:
No worries. Thank you so much for a quick answer! I appreciate the complete picture/ background/ history as well. You saved me a lot of time researching the problem and visiting the AT&T store.
Will the N7000 support AT&T's 4G network?
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It's important to know exactly what you talking about when getting caught up in marketing catches phrases like 3G and 4G etc.
AT&T's high speed network uses two different technologies, HSPA and LTE. HSPA is more of an evolution of UMTS, kinda like how EDGE is an evolution of GPRS. LTE, on the other hand, is a completely new technology from ground up. As it stands, LTE is easily about 5 to 10 times faster than HSPA on average, with speeds in the 30 to 60mbit range.
AT&T markets both technologies as "4G," even though only LTE is considered a "true" 4G technology.
The unlocked N7000 does not have LTE capabilities, but it does support AT&T's HSPA, which realistically should yield download speeds around about 3 to 9mbit. Is it fast as LTE? No, not by a long shot. Is it "fast enough?" For most people, yes, but that's up to you.
Jade Eyed Wolf said:
The "TD" refers to Time Division multiplexing as opposed to the Code Division multiplexing used by UMTS/HSPA standards in other parts of the world, including AT&T. Specifically, TD-SCDMA and TD-HSDPA, are both proprietary technologies developed exclusively by and for China. There is nothing that you can configure on your device to make it compatible with AT&T's 3G/4G network; it simply lacks the required compatible hardware. Buy an N7000. That's your solution. Sorry.
Click to expand...
Click to collapse
Close. The TD refers to Time Division Duplexing, i.e. the same RF carrier is used for both uplink and downlink transmissions.
Sent from my Transformer TF101 using XDA Premium HD app
Jade Eyed Wolf said:
It's important to know exactly what you talking about when getting caught up in marketing catches phrases like 3G and 4G etc.
AT&T's high speed network uses two different technologies, HSPA and LTE. HSPA is more of an evolution of UMTS, kinda like how EDGE is an evolution of GPRS. LTE, on the other hand, is a completely new technology from ground up. As it stands, LTE is easily about 5 to 10 times faster than HSPA on average, with speeds in the 30 to 60mbit range.
AT&T markets both technologies as "4G," even though only LTE is considered a "true" 4G technology.
The unlocked N7000 does not have LTE capabilities, but it does support AT&T's HSPA, which realistically should yield download speeds around about 3 to 9mbit. Is it fast as LTE? No, not by a long shot. Is it "fast enough?" For most people, yes, but that's up to you.
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Awesome! Great response! I would thank you again if I could.
I'll check out the speeds at my local AT&T store. Thanks for the feedback! I'll be researching the pros and cons of the N7000 and the i717.
I am a little confused about some information I found on Verizon's Note 3 Page. It says that the Note 3 will be a CDMA phone but then lists the following bands:
CDMA Data – 1x and EVDO Rev0/RevA
LTE: B13 (700MHz)
Global Ready (GSM/EDGE: 850/900/1800/1900; HSPA/UMTS: 850/900/1900/2100 MHz)
(original link: http://www.verizonwireless.com/b2c/...t&action=viewPhoneDetail&selectedPhoneId=7194)
Does it mean that if sim-unlocked, it can be used internationally, and how, if it doesn't take a sim card? If it can be used internationally, I would much rather buy a Verizon (for the US) instead of AT&T. I use AT&T only because it's a GSM carrier.
I don't have the answer but I can recommend you to contact Samsung wireless. They certainly have much more credibility.
Good luck
Sent from my SAMSUNG-SGH-I747 using xda premium
All Verizon 4G LTE devices take SIM cards. They have to, since LTE is based on GSM. Also, historically, Verizon doesn't carrier-lock the LTE/HSPA/GSM part of their 4G LTE phones, so SIM cards from other carriers will work in a Verizon LTE phone out of the box.
incisivekeith said:
I am a little confused about some information I found on Verizon's Note 3 Page. It says that the Note 3 will be a CDMA phone but then lists the following bands:
CDMA Data – 1x and EVDO Rev0/RevA
LTE: B13 (700MHz)
Global Ready (GSM/EDGE: 850/900/1800/1900; HSPA/UMTS: 850/900/1900/2100 MHz)
(original link: http://www.verizonwireless.com/b2c/...t&action=viewPhoneDetail&selectedPhoneId=7194)
Does it mean that if sim-unlocked, it can be used internationally, and how, if it doesn't take a sim card? If it can be used internationally, I would much rather buy a Verizon (for the US) instead of AT&T. I use AT&T only because it's a GSM carrier.
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I found the answer here, by the Answerer #2. The 4G/Data part of a global ready phone is GSM compatible, and only that part can be locked for data internationally; the calling part will still depend on CDMA in other countries. If that information is accurate, I will stick to an AT&T Note 3.
darkkterror said:
All Verizon 4G LTE devices take SIM cards. They have to, since LTE is based on GSM. Also, historically, Verizon doesn't carrier-lock the LTE/HSPA/GSM part of their 4G LTE phones, so SIM cards from other carriers will work in a Verizon LTE phone out of the box.
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Truth be told. LTE has more in command with CDMA in terms of radio/air interfaces. It covered within 3GPP standards (GSM then EDGE, the UMTS, HSDPA, etc). Rather than 3GPP2 for CDMA1x and EVDO. That's why Alcatel Lucent had a leg up on LTE since its deployment is more akin (specterally) to CDMA. But they dropped the ball, and except for the US and Some Asian markets, the rest of the world has 3GPP based networks deployed.
the Simple version, is LTE is not directly compatible with any 2G/3G technology, but since its covered in 3GPP, the standards evolved quicker to ensure GSM/EDGE/HSDPA interworking.
And beyond that.. what most people dont know, that interworking doesnt really work that widespread yet. In the US most mobile handsets operate on dual frequencies (especially all VzW models, ATT models are catching up) so they effectively talk CDMA1x and LTE at the same time. iPhones do not support that capability, but GSM has work arounds to allow talk+data.
i'll go back to me hole now
(btw.. anyone with iOS7 and ATT.. what out you've got problems you dont know about when going back forth from 3G to 4G.. I know since at work we talked about how to fix it..
I believe a rumor was that it has the same LTE baseband chip as the iphone 5s so that you could potentially use the Verizon version on AT&T and T-mobile...any truth to that?
incisivekeith said:
I found the answer here, by the Answerer #2. The 4G/Data part of a global ready phone is GSM compatible, and only that part can be locked for data internationally; the calling part will still depend on CDMA in other countries. If that information is accurate, I will stick to an AT&T Note 3.
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Not true, I put a T-Mobile SIM in my Verizon Note 2 and made calls, sent texts, and used data on GPRS, EDGE, and HSPA+.
geoff5093 said:
Not true, I put a T-Mobile SIM in my Verizon Note 2 and made calls, sent texts, and used data on GPRS, EDGE, and HSPA+.
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I have also done it with an ATT sim on my Verizon note 2.
Sent from my SCH-I605 using Tapatalk 4
geoff5093 said:
Not true, I put a T-Mobile SIM in my Verizon Note 2 and made calls, sent texts, and used data on GPRS, EDGE, and HSPA+.
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mchlwvr614 said:
I have also done it with an ATT sim on my Verizon note 2.
Sent from my SCH-I605 using Tapatalk 4
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Nice! Was this native to the stock Rom or is a custom one needed that has this ability "unlocked"?
bigwavedave25 said:
Nice! Was this native to the stock Rom or is a custom one needed that has this ability "unlocked"?
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Stock rom, rooted to allow apn editing.
Sent from my SCH-I605 using Tapatalk 4
Global-ready is basically verizon's way of saying that it has a GSM 3G radio as well as a CDMA radio. That allows the phone to operate in Europe where there is no CDMA service. You can purchase international service from Verizon, or purchase a SIM from a European carrier while overseas. All verizon 4G phones have a GSM 4G radio anyway, because LTE is GSM.
(This means that with an LTE carrier in Europe, any 4G Verizon phone can get data in Europe even if they can't place voice calls (VoIP still possible)).
If I am not wrong with what I am saying, Verizon LTE phones only support LTE BAND: 13, which means that IF you are willing to use 4G with different carrier, they have to support LTE band 13. I have tried to use my Verizon Galaxy Note 2 in South Korea, I was only able to use 3G network via WCDMA, I wasn't able to get LTE service at all. Correct me if I am wrong.
HecAtic said:
If I am not wrong with what I am saying, Verizon LTE phones only support LTE BAND: 13, which means that IF you are willing to use 4G with different carrier, they have to support LTE band 13. I have tried to use my Verizon Galaxy Note 2 in South Korea, I was only able to use 3G network via WCDMA, I wasn't able to get LTE service at all. Correct me if I am wrong.
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the different N3 variants due in fact support different LTE bands, so you are correct. Minor point not worth nitpicking from earlier post, GSM is not LTE. they both evolved from the same 3GPP standards body, but portions spread spectrum nature of LTE is more similar to CDMA than GSM.
I went to Korea last October, and they wouldn't allow prepaid 4g LTE. They would only allow 3G for prepaid service.
I had a note 2 rooted and custom rom when I went. I'm a US citizen and you have to wait about 2-3 days before you are allowed to sign up for any plan on what they told me.