Title pretty much says it all. Is the Nexus One variant intended for the Verizon network in the U.S. compatible with the CDMA network of Japanese carrier KDDI au?
This site here: http://euc.jp/misc/cellphones.en.html
claims that KDDI au's 3g network is "CDMA2000 1x 800MHz", and Wikipedia claims that was replaced with "CDMA 1X WIN (1xEV-DO Rev A)". I see that the Motorola Droid to supports CDMA2000 1x 800/1900MHz and EVDO rev. A, which suggests maybe they're compatible, but I don't see a tech spec breakdown for the Nexus that looks anything like that.
This is probably of no interest to anyone outside the U.S.
So everything we know in the U.S. about LTE has come from VZW users who were the pioneers. The article in the link below brings up some interesting points. First, give up on LTE roaming as there are 12 different frequencies it's approved to run over. Second, and maybe why battery life sucks for VZW users, is that their LTE phones are CDMA but use GSM and a separate radio for LTE. So here's a question. The article says AT&T is using the 700mhz frequency for LTE. Do you think that since we're GSM to begin with that the radio in the SGS2 might already support 700mhz but not have it enabled? A dev found AT&T's LTE APNs and logos in the 2.3.4 leak which is why I'm asking the question. If the AT&T LTE SGS2 has a different radio, could it still use our ROM? I'd also imagine the AT&T LTE SGS2 won't have the battery life issues that VZW folks suffer simply because hand-off between 2/3/4G/LTE will be within a single radio on a single protocol. Thoughts?
http://www.pcmag.com/article2/0,2817,2388526,00.asp
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!
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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.
So I am not an expert on cell phone technology but I have been doing a lot of reading about the Nexus 4 (my new phone) and T-Mobile (my carrier) and I noticed that the AnandTech review which says that
Band 4 (AWS) could essentially be supported with the power amplifiers and transceiver that already are onboard the Nexus 4
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This has me wondering... Part of me imagines that given the uproar over reviewers over lack of LTE, if what I wonder is true then it would have been brought up.
Regardless, T-Mobile is building it's 4G LTE network on the AWS spectrum (. Does the review at AndandTech imply that the radio could be updated to support AWS LTE? That is, could it be possible that the phone will receive a radio update to support the T-Mobile LTE network when it rolls out in 2013? It certainly would make T-Mobile being the only carrier to offer a subsidy of it a bit clearer.
So no one has any idea I guess??
I posted this awhile ago if you check the fcc filing for this phone it shows they tested Band 4
check the sar test report #1
HTC has updated the frequencies spec sheet to reflect better what we can expect from global variations of the One :
http://www.htc.com/www/smartphones/htc-one/#specs
Specifically , frequencies:
2G/2.5G - GSM/GPRS/EDGE:
850/900/1800/1900 MHz
3G - UMTS/ HSPA:
Europe/ Middle East/ Africa: : 900/1900/2100 MHz with HSDPA up to 42 Mbps
Asia: 850/900/1900/2100 MHz with HSDPA up to 42 Mbps
Canada/ Latin America: 850/1900/2100 MHz up to HSDPA 42 Mbps
T-Mobile (US): 850/ AWS/1900/2100 MHz with HSDPA up to 42 Mbps
AT&T: 850/1900/2100 MHz with HSDPA up to 21 Mbps
Sprint: 1900/2100 MHz with HSDPA up to 14.4 Mbps
3G - CDMA:
800/1900 MHz for Sprint
4G - LTE:
Europe/ Middle East/ Africa: 800/1800/2600 MHz
Asia: 1800/2600 MHz
T-Mobile (US)/ AT&T/ Canada/ Latin America: 700 MHz and AWS band
Sprint: 1900 MHz
At HTC blog site the frequencies for the HTC Developers edition is listed as :
http://blog.htc.com/2013/03/htc-one-developer-edition/
"Multiple frequency compatibility:
HSPA/WCDMA: 850/1900/2100 MHz
GSM/GPRS/EDGE: 850/900/1800/1900 MHz
LTE: 700/850/AWS/1900 MHz (US)"
With the AT&T version you can see that AT&T only gets HSDPA up to 21Mbps whereas the Canada version with the same bands gets up to 42Mbps
Question : Based on the Dev edition bands it looks like it should get DC- HSPA at 42 Mbps....is that right ??
I'd love to know that when I'm in an area with poor LTE coverage I can at least expect to get DC-HSPA speeds up to 42Mbps.
Sent from my temporary GT-I9100 using xda premium
I would guess its dc 42 by default and att rom/ modem restritcs to 21
Its the same hardware but cant be 100% sure until we get the devices.
that's because ATTs hspa+ network maxes out at 21. So if you're on att thats max you can get. Regardless of radio. You're not going to pull speeds that aren't available.
xcesivemastub8ah said:
that's because ATTs hspa+ network maxes out at 21. So if you're on att thats max you can get. Regardless of radio. You're not going to pull speeds that aren't available.
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Hi wrong! The specs stated there is the maximum bandwidth not the network's maximum speed. It would be a bad marketing for HTC if they were to put 21 if the true maximum speed is up to 42mbps. Take note that the numbers game plays with marketing perfectly.
And also HSPA+ is different than DC-HSDPA.
DC-HSDPA is a next generation HSPA+ where the bandwidth was doubled. And HTC stating that AT&T version doesn't get DC-HSDPA only means that it has different modem chipset than the others since there's no way to limit or multiply a bandwidth through software means.
It's just like making a single core processor a dual core by modifying a software.
Wait, what the hell? So the developer edition works on T-Mobiles network? When was this updated?
Nevermind, for some reason I thought it also included the 1700 band.
Sent from my HTC One X using Tapatalk 2
mouzaihem said:
Wait, what the hell? So the developer edition works on T-Mobiles network? When was this updated?
Nevermind, for some reason I thought it also included the 1700 band.
Sent from my HTC One X using Tapatalk 2
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I'm not sure about the developer edition but the specs page of HTC was updated likely 19 hours ago.
Riyal said:
Hi wrong! The specs stated there is the maximum bandwidth not the network's maximum speed. It would be bad marketing for HTC if they were to put 21 if the true maximum speed is up to 42mbps. Take note that the numbers game plays with marketing perfectly.
And also HSPA+ is different than DC-HSDPA.
DC-HSDPA is a next generation HSPA+ where the bandwidth was doubled. And HTC stating that AT&T version doesn't get DC-HSDPA only means that it has different modem chipset than the others since there's no way to limit or multiply a bandwidth through software means.
It's just like making a single core processor a dual core by modifying a software.
Click to expand...
Click to collapse
Hi wrong. Yea I don't know what you're trying to say. He asked about the att variant so I assumed he was on att. Which doesnt do dc-hspa+ . So if he's thinking he can buy the dev version and pull down 42, which I assumed was the purpose of the post, on att its not going to happen. I'm not sure were you got your marketing degree but Bad marketing would be if HTC would to say on the att variant specs that you can get anything more than 21 with the phone locked down to atts network. Imagine all the upset people on att suing them when they cant pull down 42 they claim on specs because atts network isn't built for 42. Not good marketing. The phone is for att and that's the maximum speed att gives so HTC is going to post it as the maximum speed for the att one. Simple..
Riyal said:
Hi wrong! The specs stated there is the maximum bandwidth not the network's maximum speed. It would be a bad marketing for HTC if they were to put 21 if the true maximum speed is up to 42mbps. Take note that the numbers game plays with marketing perfectly.
And also HSPA+ is different than DC-HSDPA.
DC-HSDPA is a next generation HSPA+ where the bandwidth was doubled. And HTC stating that AT&T version doesn't get DC-HSDPA only means that it has different modem chipset than the others since there's no way to limit or multiply a bandwidth through software means.
It's just like making a single core processor a dual core by modifying a software.
Click to expand...
Click to collapse
The qualcom mdm chipset is the same it supports dc hspa+ att only uses singlecarrier on there network.
Its all the ul version.
Hi! I don't have a marketing degree sorry I'm a programmer not a marketer
Anyways what if AT&T would somehow decide to upgrade their HSDPA speeds in the next 6 months? Or maybe announce tomorrow that they will upgrade it soon? Isn't it a big down for HTC? The specs made there are not specs of the network where the phone is to be used. It's the specs of the phone itself. You can't advertise a phone that it doesn't have LTE only just because the networks that will be used in it doesn't support it right?
xcesivemastub8ah said:
Hi wrong. Yea I don't know what you're trying to say. He asked about the att variant so I assumed he was on att. Which doesnt do dc-hspa+ . So if he's thinking he can buy the dev version and pull down 42, which I assumed was the purpose of the post, on att its not going to happen. I'm not sure were you got your marketing degree but Bad marketing would be if HTC would to say on the att variant specs that you can get anything more than 21 with the phone locked down to atts network. Imagine all the upset people on att suing them when they cant pull down 42 they claim on specs because atts network isn't built for 42. Not good marketing. The phone is for att and that's the maximum speed att gives so HTC is going to post it as the maximum speed for the att one. Simple..
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The qualcomm MDM chipset has different versions.
Anandtech alone confirmed that the Asian version & the UK version has different MDM chipsets used.
Receive diversity is mandatory for LTE, but even the UMTS/WCDMA only One includes it since is is again required in part to enable the all metal design. All of the One models are based on Qualcomm’s 28nm 2nd generation LTE baseband, the MDM9x15 platform we’ve seen a bunch of, and its DC-HSPA+/GSM-only (LTE blocks fused off) sibling, MDM8215 for the UMTS/WCDMA only model. This is a big step up from the international edition of the One X and One X+ which both shipped without receive diversity and were based on the aging Intel/Infineon XMM6260 platform.
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You guys are basing facts on assumptions that came from others while I am basing it on technicalities. So I guess I'll leave it out on others to decide which they think is correct.
And yeah AT&T isn't using UL version. You can go to this thread instead
http://forum.xda-developers.com/showthread.php?t=2223236
and see that it's a WL version.
Nyxagamemnon said:
The qualcom mdm chipset is the same it supports dc hspa+ att only uses singlecarrier on there network.
Its all the ul version.
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Click to collapse
Riyal said:
Hi! I don't have a marketing degree sorry I'm a programmer not a marketer
Anyways what if AT&T would somehow decide to upgrade their HSDPA speeds in the next 6 months? Or maybe announce tomorrow that they will upgrade it soon? Isn't it a big down for HTC? The specs made there are not specs of the network where the phone is to be used. It's the specs of the phone itself. You can't advertise a phone that it doesn't have LTE only just because the networks that will be used in it doesn't support it right?
.
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I don't know how we got off topic but Yes. The specs ARE of the network that they are to be used on since a carrier variant is tied to a specific carrier. Listen, You can't advertise a phone being able to download 42mbps on a network that doesn't have it. Its false advertising to tell att customers that they can get 42mbps with this phone. Which is what they would be saying if att one specs said 42 instead of 21. And what I was trying to clarify to the OP that he's not going to get. It doesn't matter if it had a chip capable of 1 million mbps. Its a phone meant specifically to be used on att and att can only do 21 so that's all they're going to tell you the phone can do because that's all you(the general public) need to know. As for your last sentence, You can and they do. Just Look at the nexus 4. No LTE advertising but LTE capable. If att was deciding they wanted to upgrade their network it wouldn't be a big down for HTC. All they would have to do is change the Att one specs on their site.
And att variant and dev edition are the same. Both the UL version. WL is cdma. Sprint.
ATT is ul. Mile needs to update his op
Sent from my Nexus 7 using xda premium
---------- Post added at 01:01 AM ---------- Previous post was at 12:59 AM ----------
expertzero1 said:
ATT is ul. Mile needs to update his op
Sent from my Nexus 7 using xda premium
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ATT stopped working on hspa.
Its LTE right now and a bud of mine told me they are currently turning on LTE Advanced. In my area they already turned it on but no press release though. You just see a minor speed bump until lte advanced chips are supported
Sent from my Nexus 7 using xda premium
WOW !
I didn't realise my post would cause such a kerfuffle...I'm in Canada and simply wanted to know based on official specs provided whether the Dev edition would pull in DC-HSDPA speeds on Telus network that supports this dual channel technology
Sent from my temporary GT-I9100 using xda premium
adsam3927 said:
WOW !
I didn't realise my post would cause such a kerfuffle...I'm in Canada and simply wanted to know based on official specs provided whether the Dev edition would pull in DC-HSDPA speeds on Telus network that supports this dual channel technology
Sent from my temporary GT-I9100 using xda premium
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The reason why att variant advertises different speeds even though theyre the same m7-ul model was given in the first 2 responses. Unlocked models don't advertise speed because there's no carrier to advertise for. The thread took a turn for the worst when, for whatever reason, someone decided they were going to hijackand and fill the thread with "facts" based on misinformation.
adsam3927 said:
WOW !
I didn't realise my post would cause such a kerfuffle...I'm in Canada and simply wanted to know based on official specs provided whether the Dev edition would pull in DC-HSDPA speeds on Telus network that supports this dual channel technology
Sent from my temporary GT-I9100 using xda premium
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In case no one answered the OP, the answer is NO. Unless the published specs are wrong, it will not operate on the 1700/2100 band. I believe that is the same technology used by T-Mobile?
Does anyone know if this would work on Verizon Wireless?
Sent from my Nexus 4 using Tapatalk 2
I asked Brian Klug, the author of the Anandtech review, this exact question and here is my question and his response.
"Hey Brian I have a quick question for you. Will the unlocked editions support HSPA+ 42?"
"The developer unlocked edition is only 21.1 single carrier 64QAM from what I know (AT&T variant)."
Judging by his review he's a lot smarter than I am so I'll take his word until we have confirmation otherwise.
mouzaihem said:
Wait, what the hell? So the developer edition works on T-Mobiles network? When was this updated?
Nevermind, for some reason I thought it also included the 1700 band.
Sent from my HTC One X using Tapatalk 2
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Click to collapse
It always has. You just had to be in the refarmed 1900 or the LTE areas to get better than 2G.
---------- Post added at 05:56 PM ---------- Previous post was at 05:54 PM ----------
TheGman125 said:
Does anyone know if this would work on Verizon Wireless?
Sent from my Nexus 4 using Tapatalk 2
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No, it won't. No CDMA authorization for it to do so.
Du22ty said:
I asked Brian Klug, the author of the Anandtech review, this exact question and here is my question and his response.
"Hey Brian I have a quick question for you. Will the unlocked editions support HSPA+ 42?"
"The developer unlocked edition is only 21.1 single carrier 64QAM from what I know (AT&T variant)."
Judging by his review he's a lot smarter than I am so I'll take his word until we have confirmation otherwise.
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Click to collapse
That's disappointing... I really was hoping to have the 2 current best speeds for the One...LTE and upto 42Mbps.
Im with Telus and beginning to wonder if I should sacrifice 32Gb of storage and go with a Telus LTE/42Mbps device
Sent from my GT-I9100 using xda premium
I highly doubt its 21 hes speculating. I posted info from diffrent sources regardingthe dc42. The mdm9215 supports dchspa by default.
Nyxagamemnon said:
I highly doubt its 21 hes speculating. I posted info from diffrent sources regardingthe dc42. The mdm9215 supports dchspa by default.
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It is 21 if using AWS on the T-Mobile system. I don't know what it gets on ATT.