Database Users

is the HTC EVO worldphone like the HTC TP2?

me(US T-MO) and my friend(sprint) wondering if any of u know if the HTC EVO 4G gonna have the worldphone compatability(GSM slot for gsm networks).my friend currently using the TOUCH PRO 2 from sprint and he has the ability to switch the phone to GSM carriers.jus wondering if the EVO gonna have the compatibilty.if yes defenetly dropping my HD2.

The Evo 4G is a CDMA phone it will not work on GSM and never will since it doesnt even come with a slot to insert a sim card.

yea i know that but the ones that u've seen on every website and videos r not the OFFICIAL EVO i think cuz they didnt even announced the official date but if its CDMA im out of luck and wish for a GSM version of the EVO.

GHOST99K said:
if its CDMA im out of luck and wish for a GSM version of the EVO.
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It's 100% CDMA w/no SIM slot. So I guess your out of luck

The big thing about the EVO 4G is the fact that it's a CDMA/Wi-Max. If it had a SIM slot, and you put it on a GSM network like T-Mobile, you wouldn't be able to connect to Sprint's 4G network and lose the one big advantage of this phone. Sure it's got 720p HDMI output and 8MP camera, but other than that and Wi-Max, it's got very similar specs to the HD2.
The other reason could be the fact that they wanted it to run Android, and I have yet to see any CDMA/GSM World Phones running Android natively so they may not have worked out the whole dual mode switching in Android - but I could be wrong about that one.

well.......i guess i have to be patient for something better by HTC on GSM carrier network with ANDROID 2.1.honestly i bought the HD2 and i've flashed custom ROM but still not satisfied at all with WM.i would get me NEXUS ONE but then again better phone will come out by HTC every 3-4 months.as far as 4G its not necessary for me at all.i will patiently wait till end of summer for the better.thanks guys

Look it up. GOOGLE IT ESPECIALLY WITH ANDROID
Sigh why do people get fooled by Sprint's cheap marketing... T-mobile's releasing HSPA+ 3G which is going to be faster than Sprints so called "4G"

Blackman778g said:
Sigh why do people get fooled by Sprint's cheap marketing... T-mobile's releasing HSPA+ 3G which is going to be faster than Sprints so called "4G"
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dude. wimax. shut up.

mountaindont said:
dude. wimax. shut up.
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Sigh... When people don't know the facts.
http://www.cellphonesignal.com/t-mobile-hspa-vs-sprint-wimax-by-pcworld/
http://www.pcmag.com/article2/0,2817,2359139,00.asp

Blackman778g said:
Sigh... When people don't know the facts.
http://www.cellphonesignal.com/t-mobile-hspa-vs-sprint-wimax-by-pcworld/
http://www.pcmag.com/article2/0,2817,2359139,00.asp
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Dude....Let Sprint and everyone that is on Sprint enjoy the fact that SPRINT will have one (if not the best) of the best phones ever made for a little while until another one comes out. Tmo has the HD2...now is Sprints turn, chill out!
You got HSPA+? Good for you....we'll have 4G! Is that simple.

Blackcircle said:
Dude....Let Sprint and everyone that is on Sprint enjoy the fact that SPRINT will have one (if not the best) of the best phones ever made for a little while until another one comes out. Tmo has the HD2...now is Sprints turn, chill out!
You got HSPA+? Good for you....we'll have 4G! Is that simple.
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Alright I'll settle for that... just trying to make sure people don't fall for the marketing gimmick. I had every carrier and been a loyal customer to them all.... Some people will switch just for a single phone even if they don't have reception in their area. Make a smart move it'll last two full years.

Blackman778g;I had every carrier and been a loyal customer to them all.... [/QUOTE said:
really??
boys and girls.. can we all say "contradiction"?
had to do it to u...
all major carriers will come out with their own "4G" setup, that is to be expected. WHEN will it hit the market; is the real question. Sprint has WiMax and it is being rolled out aggressively.
As they saying goes.."one bird in hand.. is better than two in the bush"
that being said... I live in a WiMax area and have the Overdrive. It is faster than 3G but I can only get 20% signal in areas that I am most in.
I hope they get more towers up in my area!!!!!
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Blackman778g said:
Alright I'll settle for that... just trying to make sure people don't fall for the marketing gimmick. I had every carrier and been a loyal customer to them all.... Some people will switch just for a single phone even if they don't have reception in their area. Make a smart move it'll last two full years.
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So when is this mythical HSPDA+ coming out? WiMax has already been out for over a year where I live, and I've not heard of a single person with WiMax-like speeds on any other carrier. T-Mobile is typically last to the game in that regard, but either way, you guys already have the HD2, which I'd rather have anyways.

WiMax is not certified 4G and will never be. I'm really shocked that Sprint hasn't been called out on this and hasn't had their false adverts of a "4G" network pulled.

march7th said:
WiMax is not certified 4G and will never be. I'm really shocked that Sprint hasn't been called out on this and hasn't had their false adverts of a "4G" network pulled.
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why would it have to be "certified 4G?" also, from what I've read from the beginning, is that WiMax and LTE are SO SIMILAR, that it wouldn't cost much for Clear/Sprint to fully convert. The even planned on having a combination of the two services.
methinks you doth protest too much.

ScrapMaker said:
why would it have to be "certified 4G?" also, from what I've read from the beginning, is that WiMax and LTE are SO SIMILAR, that it wouldn't cost much for Clear/Sprint to fully convert. The even planned on having a combination of the two services.
methinks you doth protest too much.
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wimax and lte use different freqs, converting would not only change the protocol(like software) but the antennas, transponders, receivers and transmitters (hardware)
then all the phones themselves would need new radios (hardware + software) It would be a huge mess, I highly doubt they will convert the technology, hope they just adopt LTE with Wimax and your phone supports both someday. As they already have chipsets that support both technologies at the same time with multiple radios and transceivers. But my money is the conversion of technology will not happen, it will just be integrated into the phones instead of the towers.
Now the wimax/4g thing, wimax has been branded 4g, 4g is a general term...(yes I know it's a stardard and has minimum req's) but the term works for it's purpose; recognition more than a actual "standard". evdo started getting called 3g when the 3g term got popular and was a "feature" and was easier to remember no actual feature was added for them to call it 3g.
The point is the idea gets across, as it is agreed they both generally mean the same thing, you know what it means, they know what it means, and making that kinda correction makes people sound like asses. Much like spelling correctors.

BAM! I knew I read that before.

ScrapMaker said:
BAM! I knew I read that before.
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not everything on you read on the internet is true, but facts are facts.. look
Wimax operates on 2.5Ghz
http://en.wikipedia.org/wiki/WiMAX#Spectrum_allocation
LTE operates on 700Mhz
http://en.wikipedia.org/wiki/3GPP_Long_Term_Evolution#Frequency_bands_and_channel_bandwidths
the two operate on two extremely different frequencies, you can't magically change a phone that is built to operate on one freq to start using one that differently. It's just not physically capable of doing it. No amount of software is going to change that.
That article was written in september 09' sprint has moved forward with wimax, they have made their decision, once they put equipment out in customers hands, they will have to cut some customers off by making drastic changes at this point in the game. To jump back at this point would be insanity. The infrastructure is already being built, and in some cases already built.

johnsongrantr said:
not everything on you read on the internet is true, but facts are facts.. look
Wimax operates on 2.5Ghz
http://en.wikipedia.org/wiki/WiMAX#Spectrum_allocation
LTE operates on 700Mhz
http://en.wikipedia.org/wiki/3GPP_Long_Term_Evolution#Frequency_bands_and_channel_bandwidths
the two operate on two extremely different frequencies, you can't magically change a phone that is built to operate on one freq to start using one that differently. It's just not physically capable of doing it. No amount of software is going to change that.
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Why is that? Radios can transmit on all sorts of frequencies... you have no idea how they designed their antennae or transmitters. If Clear says, themselves, that the technology is 80% identical, then it's fairly believable. I've been hearing that for years, anyhow.
Hell, just look at AT&T, they have 3G on all sorts of bands, and that didn't stop them people from using them. This argument is pointless. Clear could have hybrid modems in store, or possibly their devices can already use the spectrum to reference. All I'm saying is Sprint/Clear aren't really committing false-advertising. Comparing some mythical unicorn that T-Mobile *might* have in a few markets sometime soon, to WiMax, which has been out for quite some time, doesn't make much sense.
For now, it's 4G... the fastest, and I believe they have the right to call it that. It's Sprint's fourth-generation network. For years, the carriers bounced back and forth as to who had the fastest network, and you didn't see anyone renaming their from 3G.

ScrapMaker said:
Why is that? Radios can transmit on all sorts of frequencies... you have no idea how they designed their antennae or transmitters. If Clear says, themselves, that the technology is 80% identical, then it's fairly believable. I've been hearing that for years, anyhow.
Hell, just look at AT&T, they have 3G on all sorts of bands, and that didn't stop them people from using them. This argument is pointless. Clear could have hybrid modems in store, or possibly their devices can already use the spectrum to reference. All I'm saying is Sprint/Clear aren't really committing false-advertising. Comparing some mythical unicorn that T-Mobile *might* have in a few markets sometime soon, to WiMax, which has been out for quite some time, doesn't make much sense.
For now, it's 4G... the fastest, and I believe they have the right to call it that. It's Sprint's fourth-generation network. For years, the carriers bounced back and forth as to who had the fastest network, and you didn't see anyone renaming their from 3G.
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I have no idea how they designed their transmitter? This is more or less true, I don't know the exact specifics of their radios, but I have a really really good idea. I used to fix radios for the army... I have an good general knowledge of radio technology.
I don't have the exact links but I've posted some to chipset makers in this forum. One is for the evo's chipset, and one for for a future phone's chipset. The future one has radios *note plural* built in that are capable of broadcasting on both the 700 and 2.5 frequencies. The EVO's is not capable of the 700mhz only the 2.5ghz (among others 800 & 1900 but not 700)
The reason you can tune civilian band and police radios to multiple frequencies is because of transistors. But you're talking a very small spectrum. A common span is like 1-50Mhz difference. The Bigger the gap the bigger and more elaborate the electronic circuitry is required. Having to tune amplifiers as well as antennas. I'm not going to give a lesson on radio broadcast technology cause, well I'm just not.
For antennas they have to be cut to exact length based off their wavelength to preform optimally. As the frequency increases the length gets shorter but the principal is still there. It has to be more or less exact, the more you deviate the less clear the signal will be with the higher freqs the more exact it needs to be. Fudging a difference that big will not work for a clear and precise digital signal.
SO... while a cell phone radio might change it's freqs slightly depending on open channels, the range is fairly close, a radio that operates on 700mhz might go as high or low as 725 for example but it will not, and I repeat will NOT do a 1800Mhz difference. Hopefully that sheds some light on this subject.
I can't go into how their backend protocol is worked, because I honestly haven't ever messed with it and would only be speculation on my part. So it might be correct, the software might be easily interchangeable, but the hardware is not, and clear/wimax even stated so in that article. They said they had equipment capable of both or options or something. But a change is needed for sure. The evo is sprint's flagship wimax phone, and it is not capable of the freqs lte currently uses.... end of story.

Sprint Killing Iden and Moving to LTE?

Recently read that sprint will be phasing out the iden network by 2013 and Dan Hesse Admitted Wimax was a failure and is considering the switch to LTE.
Could a switch to LTE ruin our 4Gness on our beloved Evos or would they still work?
http://www.theregister.co.uk/2010/12/09/clearwire_sprint_wimax/
http://www.dslreports.com/shownews/Sprints-25-Billion-Network-Improvement-Plan-Hints-At-LTE-111703

Im just going out on a limb here but gonna throw my thoughts in on this . The phase out wont be till 2013 . With that being said most of us on the Evo will be well into a new phone by that time . General life span of phones (I said general) seems to be one year maybe two at most before someone jumps ship and gets another phone . I have also read that Wimax is an older technology that has been around for a while and the next logical jump would be LTE much like verizon is pushing . Now if for some reason you still have an Evo by the time the phase out is complete , I would suspect Sprint would either offer their customers an upgrade to work on the new network or atleast reduce the bills of the current evo owners still running an evo at that point . But from what I have seen and said in this post the likelyhood of any of us having the EVO in its current form by that time is very low . Its also possible the next gen of phones being released next year will start incorporating the LTE system (say for the sake of argument EVO2 LTE) to adjust to this change .

Wimax 2............ftw

Current wimax network can be easily switched to LTE via software upgrade that's why the current wimax buildout will continue. Also wimax is backwards compatible with wimax 2. So sprint has a couple ways it could go. And they own a lot of spectrum.
Sent from my PC36100 using XDA App

Expect ptt over ip and not in the failed Qchat form. Most likely over 4G(wimax1,2 or LTE) data. Sprint has plenty option. They just have to play it right.
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david279 said:
Current wimax network can be easily switched to LTE via software upgrade that's why the current wimax buildout will continue. Also wimax is backwards compatible with wimax 2. So sprint has a couple ways it could go. And they own a lot of spectrum.
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So wimax and LTE hardware are compatible, interesting.

Sort of. It only takes a firmware update to switch.
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hmmmm...maybe wimax and lte along with cdma and gsm...world wide phone..anywhere. Maybe Sprint quad band phones with quad core cpus in next 5-10yrs? Quad band with quad core.."4x4" on 4G. ok..dream over...
Youd need a 12 volt battery too. lol

I read a while back that sprint chose WiMax as its "4g" provider because the infrastructure was already in place since clear had been launched. And that if LTE deemed a better route that the WiMax network could be patched relatively easily to run LTE. Im not worried about it. If sprint was the first company to have 4g im pretty sure they wont leave their current WiMax customers without high speed service if Wimax is pulled off the market. But remeber as well that the article specifies Iden which is nextel. Thats a conpletely different animal. Only time will tell.
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nebenezer said:
So wimax and LTE hardware are compatible, interesting.
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No. The transmitters use a WiMax card to transmit WiMax signal. All they would have to do on their end is swap the cards in the transmitters for LTE cards and then patch the software to interface with them instead of WiMax cards.
The bad news is that for us Evo and Epic (and Overdrive) owners, we won't get LTE with current hardware. And I know they'll use the "early adopter" excuse. Either way, I love my Evo, 4G or not. I hardly use 4G. I just hope they do the right thing and offer people money back or towards an upgrade. WiMax is fast, but isn't that great to begin with. I'd rather have LTE seeing as how it's becoming an international standard. The only thing I don't like is the cluttered frequency. Verizon and AT&T will both be using 700 MHz.

david279 said:
Current wimax network can be easily switched to LTE via software upgrade that's why the current wimax buildout will continue. Also wimax is backwards compatible with wimax 2. So sprint has a couple ways it could go. And they own a lot of spectrum.
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Thats good the two technologies are that compatible, I didn't know they could be used like that. You're right about Sprint having the Spectrum for it too. My guess is they tried getting rid of IDEN a few years back to use that spectrum for 4G but couldn't because of all the people still using it. The higher frequency WiMax is at now is what's holding it back.

They're compatible from the transmitter's end, not the receiver's end (our phones).

Product F(RED) said:
They're compatible from the transmitter's end, not the receiver's end (our phones).
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That's the only problem. If sprint goes with wimax 2 well be alright though. Early adopters always the test dummys.
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Yeah, that's true but I still think the Evo is the best Android phone out. Maybe not the most powerful, but the most polished and well-built (software and hardware-wise).

Product F(RED) said:
Yeah, that's true but I still think the Evo is the best Android phone out. Maybe not the most powerful, but the most polished and well-built (software and hardware-wise).
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This is true until the G2 came out. That would be the only phone I would leave sprint for. I think the problem that came about with the Evo was it was rushed out for sprint. They could have cleaned up a bunch of problems before it even hit the street. **off soapbox**
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Product F(RED) said:
They're compatible from the transmitter's end, not the receiver's end (our phones).
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As long as they don't switch frequencies, then they will need to transmitters as well. Although they could probably leave the infrastructure they already have in place and finish the rest of it on the other frequency.

No, what I mean was that LTE and WiMax are not intercompatible in themselves.

Im glad to see that they can switch between wimax and LTE easily. I did not know that. Hopefully all the companies will have a roaming agreement in place. Also, isnt the range of LTE further than Wimax or is it the other way around?

Product F(RED) said:
No. The transmitters use a WiMax card to transmit WiMax signal. All they would have to do on their end is swap the cards in the transmitters for LTE cards and then patch the software to interface with them instead of WiMax cards.
The bad news is that for us Evo and Epic (and Overdrive) owners, we won't get LTE with current hardware. And I know they'll use the "early adopter" excuse. Either way, I love my Evo, 4G or not. I hardly use 4G. I just hope they do the right thing and offer people money back or towards an upgrade. WiMax is fast, but isn't that great to begin with. I'd rather have LTE seeing as how it's becoming an international standard. The only thing I don't like is the cluttered frequency. Verizon and AT&T will both be using 700 MHz.
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By the time any switch happens, both the Evo and Epic will be very outdated. Not to many people will still have them. lol

wimax and lte
My best friend worked for sprint. Now works for AT&T. Wimax is not the problem. LTE is a different technology. What you have to understand is not the sofware but the signal. The Wimax from Sprint is running between 2.0 and 2.5 ghz. The problem with this is the structure penetration. 2.4ghz, if you remember is what older home cordless phones run on. Get to far away and, bam, no signal. Sprint could switch to the LTE format the the carrier frequency in the 2.0 to 2.5ghz spectrum will still not be able to penetrate structures well. My friend says the spectrum needs to be cleared up. vhf uhf tv. WTF. Get rid of them. You need to be at the 650mhz spectrum (his personal choice) so the the wavelength of the carrier wave will be able to penetrate building/structures. And pagers? Are you kidding me all phones double as a pager. Dump them. A doctor is going to get a page and use his cell phone to call in? waste of spectrum. So sprint needs to change the carrier frequency of wimax or lte (if it changes its mind) so that you can get your service indoors. The carrier frequency only is a delivery system(such as a semi truck delivering a tv). If you have a bad truck, tv does not get delivered. Know what I mean. All carriers need some free up of current spectrum so we can get some real penetration and better bars. I hate being a nerd. But WFT. Get a divorce and get an new life.
Cole

Sprint to deploy 4G LTE network

Looks like Sprint's getting ready to deploy LTE. What does everyone think?
http://www.bgr.com/2011/06/17/sprint-to-deploy-4g-lte-network-with-lightsquared/
http://www.bloomberg.com/news/2011-06-17/falcone-s-lightsquared-venture-reaches-a-15-year-network-deal-with-sprint.html

Last i heard, LightSquared was told by the FCC they weren't allowed to broadcast because they were overpowering civilian and aviation GPS units. Has this issue been resolved? A 15 year deal ain't worth squat if you can't turn on the juice!!

SilverStone641 said:
Last i heard, LightSquared was told by the FCC they weren't allowed to broadcast because they were overpowering civilian and aviation GPS units. Has this issue been resolved? A 15 year deal ain't worth squat if you can't turn on the juice!!
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Yeah, thats what I'm worried about, I wish/hope its as easy as a change of a frequency channel.

I"m sure they will iron those wrinkles before flipping the switch.

It would be like Sprint to throw its weight behind a technology that is failed, different or inferior. WiMAX isn't exactly inferior to LTE, but the 2.5 GHz band it relies on most certainly is inferior to the 700 MHz band that Verizon's LTE uses.

Ok, so lets say they deploy this 4g lte network... what happens to their 4g wimax network? From what little I know about wimax and lte chipsets, I dont think it would be possible for a firmware upgrade to turn wimax to lte. What happens to clear? One important thing to remember is that I didnt actually read the article so these questions may already be answered. haha.
Although, if my evo became a 3g only device, I would actually be ok with that if they drop the $10 a month surcharge

ZachPA said:
It would be like Sprint to throw its weight behind a technology that is failed, different or inferior. WiMAX isn't exactly inferior to LTE, but the 2.5 GHz band it relies on most certainly is inferior to the 700 MHz band that Verizon's LTE uses.
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Words straight out of my mouth.

is there a resource that lists open frequency ranges?

Could the new radio(SMR) thats in the evo 3d work on this frequency and be a dual wimax/lte combo?
Sent from my PC36100

"The company can use LightSquared’s network to lessen the load on its own network as data demand has skyrocketed, an issue that has plagued other carriers. "
It sounds like they will be using them for backhaul, I don't see anything about Sprint using LTE. Right now backhaul is what Sprint is lacking so this will be a good thing for not just 4G but 3G speeds.

Cloyd said:
is there a resource that lists open frequency ranges?
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here is a chart..
http://www.ntia.doc.gov/osmhome/allochrt.pdf

I assume any potential move to lte will address wimax's inferior latency?

Sprint end users will NOT use LTE most likely ever. Sprint (the provider service) will utilize LTE strickly for back haul only. This is a very good thing for us the end user, basically means to us that we will have lots of bandwidth on tap. Wimax offers up to 12MB d/l transport speeds which most of us probably never see anyway. I personally get 7-8 around Baltimore/Annapolis areas of Maryland and this will hopefully allows us to have the bandwidth assuming more towers are deployed for our cell connectivity. This is a very good thing for us and the sooner the better!

sounds like lte will come later on firat is evdo rev o then rev a then rev b then do then do advance then lte
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I have spoken to my sprint rep a lot about how Sprint works. He used to work for Samsung and distributed phones to carriers in the northeastern part of the united states. Because of this, he learned a lot about Sprint. One thing that he learned was that Sprint has the most bandwidth out of all the carriers, and it is one of the main reasons why theory data is truly unlimited.
Just throwing that out there.
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xHausx said:
"The company can use LightSquared’s network to lessen the load on its own network as data demand has skyrocketed, an issue that has plagued other carriers. "
It sounds like they will be using them for backhaul, I don't see anything about Sprint using LTE. Right now backhaul is what Sprint is lacking so this will be a good thing for not just 4G but 3G speeds.
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It talks about Sprint using LTE in the third paragraph of the Bloomberg article.
“LightSquared and Sprint will jointly develop, deploy and operate LightSquared’s 4G LTE network,” according to the letter. “Sprint will become a significant customer of LightSquared’s 4G LTE network.”

Yet more money wasted on Wimax and shoveled into another bad relationship (Clearwire) Stay comfy in number 3 because you're going to be seated here a while, Sprint. At the very least they woke up and realized LTE is the way to go.
However even after Clearwire's long gone. Those who already have Wimax 4g will still be supported until after their devices are long gone. The only ones who will be bit will be the ones that should have upgraded lone ago. Like the ones today who are still carrying around Cingular phones refusing to upgrade to AT&T So at least Sprint will keep their core customers happy to an extent.

Sprint desperate to jump into the LTE iPhone train next year?
Sent from my Nexus S 4G using Tapatalk

What good is backhaul when the airwaves can't reach end users?
It's like having a download server capable of gigabit speed, along with an ISP who can deliver it to you. Except you're saddled with a 1991-vintage 10 Mbps ethernet card.
That's the problem I've been noticing with WiMAX. Sprint has one hell of a data network, but the airwaves used to deliver that network are congested and not well suited to the consumer's needs.

I wonder how likely it is that an upcoming Galaxy 2 or Photon 4G will be LTE / Wimax on Sprint...

anyone heard about this

i got a call from my buddy from sprint and he said in 20 days sprint is gonna buy and get verizons 4gLTE
anyone know if this is true or not.
i know that the nexus is getting a update hopefully this week that is suppose to boost 4g and wifi connection. so thats a bit of a hint
what you guys know about this

I have heard that they were going to be using LightSquared possibly. Not sure if that is VZWs LTE provider, but since Sprint uses VZWs 3G towers, I can't see why they won't strike a roaming contract with them again.
http://www.fiercewireless.com/story/analysis-sprint-inching-closer-lte-announcement/2011-06-20

Joey_UFC said:
i got a call from my buddy from sprint and he said in 20 days sprint is gonna buy and get verizons 4gLTE
anyone know if this is true or not.
i know that the nexus is getting a update hopefully this week that is suppose to boost 4g and wifi connection. so thats a bit of a hint
what you guys know about this
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An LTE roll out for Sprint will happen.
It's been talked about that Sprint may embrace both LTE and Wimax standards.
However, it's not an instant process and a phone would have to have an LTE radio to use the LTE band.

mattykinsx said:
An LTE roll out for Sprint will happen.
It's been talked about that Sprint may embrace both LTE and Wimax standards.
However, it's not an instant process and a phone would have to have an LTE radio to use the LTE band.
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so this isn't something we should be expecting in the 20 days i heard, or even soon for that matter
1 more thing, if sprint does get LTE, do they lose the wimax if they decide to no longer be with ClearWire?

Joey_UFC said:
so this isn't something we should be expecting in the 20 days i heard, or even soon for that matter
1 more thing, if sprint does get LTE, do they lose the wimax if they decide to no longer be with ClearWire?
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In 20 days some sort of deal might go down, or they might start some sort of project, but there's no way they can instantly switch and certainly not in such a short timeframe.
IF Sprint drops Clearwire then yes, Wimax would not work with Sprint phones.
It's been suggested that Sprint may go to quadband phones though.
Who knows. I'm not even sure Sprint does, which is part of the problem.

mattykinsx said:
In 20 days some sort of deal might go down, or they might start some sort of project, but there's no way they can instantly switch and certainly not in such a short timeframe.
IF Sprint drops Clearwire then yes, Wimax would not work with Sprint phones.
It's been suggested that Sprint may go to quadband phones though.
Who knows. I'm not even sure Sprint does, which is part of the problem.
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Well in the link he posted above, the article said that they plan on making a Sprint-Clearwire-LightSquared combination.
its a stretch to make it happen but its possible

Joey_UFC said:
Well in the link he posted above, the article said that they plan on making a Sprint-Clearwire-LightSquared combination.
its a stretch to make it happen but its possible
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I wouldn't doubt it.
Sounds like a good idea actually.
And it coincides with the idea that Sprint might just run both standards along side CDMA (which would eventually be phased out, eventually.)
Both LTE and Wimax have uses.
Why shouldn't both technologies be used for what they do best?

mattykinsx said:
I wouldn't doubt it.
Sounds like a good idea actually.
And it coincides with the idea that Sprint might just run both standards along side CDMA (which would eventually be phased out, eventually.)
Both LTE and Wimax have uses.
Why shouldn't both technologies be used for what they do best?
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ok just so i got this right and don't start rambling about things idk
LTE is 4g alone or is it Both 4g and Wimax.
cause if thats the case then why hold onto Clearwires Wimax?

Joey_UFC said:
ok just so i got this right and don't start rambling about things idk
LTE is 4g alone or is it Both 4g and Wimax.
cause if thats the case then why hold onto Clearwires Wimax?
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Neither are true "4g"
Both are just different technology standards (well not even standards lol).
Its just like wireless a, b, g or n.
Just different "standards" for wirelessly transfering data.

mattykinsx said:
Neither are true "4g"
Both are just different technology standards (well not even standards lol).
Its just like wireless a, b, g or n.
Just different "standards" for wirelessly transfering data.
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what do you mean by "true 4g"

Joey_UFC said:
what do you mean by "true 4g"
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In 2009, the ITU-R organization specified the IMT-Advanced (International Mobile Telecommunications Advanced) requirements for 4G standards, setting peak speed requirements for 4G service at 100 Mbit/s for high mobility communication (such as from trains and cars) and 1 Gbit/s for low mobility communication (such as pedestrians and stationary users).[1]
http://en.wikipedia.org/wiki/4G
Basically, 1 Gbit/s when not moving, 100mbit/s when moving and VOIP.
Everything runs through data.
Texting, Voice as well.

lte is awesome, if you use your phone as it comes out of box. ask any thunderbolt owner what happens when you throw an aosp rom on top of the lte radio...

mikeyinid said:
lte is awesome, if you use your phone as it comes out of box. ask any thunderbolt owner what happens when you throw an aosp rom on top of the lte radio...
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It has nothing to do with LTE and all to do with the spectrum used by Verizon.
Wimax would be just as "awesome" if at the same frequency.

mattykinsx said:
It has nothing to do with LTE and all to do with the spectrum used by Verizon.
Wimax would be just as "awesome" if at the same frequency.
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no, your not following me. im not talking about lte itself. im talking ril and the actual radio.

using 3G data during a call S4

After checking in to why this would not work I was told that it just isn't supported. You can use 4G and wifi data duringa call but not 3G. It's a little bit ofa draw back for me. I was just wondering what any one else's thoughts where on this?
I do like the phone so far other than this.

tman73 said:
After checking in to why this would not work I was told that it just isn't supported. You can use 4G and wifi data duringa call but not 3G. It's a little bit ofa draw back for me. I was just wondering what any one else's thoughts where on this?
I do like the phone so far other than this.
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I'm taking a chance on sounding silly, but that's just the way it is on CDMA networks. You can only do one or the other on 3G: voice or data. Being able to use voice and data simultaneously is a perk of 4G, LTE or wifi. Of course, if you have no LTE available where you are, or no wifi, it's voice or data. I know it's frustrating. I live in Minneapolis, Uptown area. We never did get very good Wimax at our house, especially indoors.
When the LTE phones came out, I was in no hurry to upgrade, as there was no LTE anywhere in the Twin Cities. No one could hazard a guess as to when it would be rolled out. The Evo LTE has been out for almost a year, and LTE is finally becoming available. It's still pretty spotty, though. The good thing is, even with a weak signal at my house, I still can get nearly 5000kbps down inside my house. That's a lot better than 3G for sure! Sprint is saying we'll have LTE pretty much throughout the city in the next couple of months. I'll believe that when I see it.
I like my S 4 pretty well. It's still strange getting used to Touch Whiz after Sense. I moved to the S 4 after having the original Evo and then the Evo 3D. I'm looking forward to rooting and being able to run custom ROMS on my S 4.

smarcin said:
I'm taking a chance on sounding silly, but that's just the way it is on CDMA networks. You can only do one or the other on 3G: voice or data. Being able to use voice and data simultaneously is a perk of 4G, LTE or wifi. Of course, if you have no LTE available where you are, or no wifi, it's voice or data. I know it's frustrating. I live in Minneapolis, Uptown area. We never did get very good Wimax at our house, especially indoors.
...
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That's not exactly accurate. Some phones can do simultaneous CDMA voice and data. However, it requires extra complexity in the phone (what's called "multiple paths") and with Sprint going to LTE, they decided to put a separate transmit path in the device just for LTE (and Wi-Fi).

smarcin said:
I'm taking a chance on sounding silly, but that's just the way it is on CDMA networks. You can only do one or the other on 3G: voice or data. Being able to use voice and data simultaneously is a perk of 4G, LTE or wifi. Of course, if you have no LTE available where you are, or no wifi, it's voice or data. I know it's frustrating. I live in Minneapolis, Uptown area. We never did get very good Wimax at our house, especially indoors.
When the LTE phones came out, I was in no hurry to upgrade, as there was no LTE anywhere in the Twin Cities. No one could hazard a guess as to when it would be rolled out. The Evo LTE has been out for almost a year, and LTE is finally becoming available. It's still pretty spotty, though. The good thing is, even with a weak signal at my house, I still can get nearly 5000kbps down inside my house. That's a lot better than 3G for sure! Sprint is saying we'll have LTE pretty much throughout the city in the next couple of months. I'll believe that when I see it.
I like my S 4 pretty well. It's still strange getting used to Touch Whiz after Sense. I moved to the S 4 after having the original Evo and then the Evo 3D. I'm looking forward to rooting and being able to run custom ROMS on my S 4.
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There's no harm in sounding silly. :silly: We forgive you.
The Sprint S3 and Evo 4G LTE both do it, it's called SVDO, simultaneous voice and EVDO 3G data (and ofcourse simultaneous voice and LTE and or WiFi).
For some reason, Sprint decided to fore-go SVDO on LTE phones after those two (S3 and Evo 4G LTE) and instead focus on SVLTE. To be fair, in all the years i've been with Sprint (13) i never thought i would ever need or use that feature until i got the S3. The first time i unknowingly used it i didn't even realize that while on a call, i was playing WordFeud multiplayer. It's something i do all the time now, and definitely sad to see it gone on the newer phones.
As their LTE network gets more robust and mature, it won't be much of an issue, but as of now 3G is in more places than their LTE network is. So...

LordLugard said:
There's no harm in sounding silly. :silly: We forgive you.
The Sprint S3 and Evo 4G LTE both do it, it's called SVDO, simultaneous voice and EVDO 3G data (and ofcourse simultaneous voice and LTE and or WiFi).
For some reason, Sprint decided to fore-go SVDO on LTE phones after those two (S3 and Evo 4G LTE) and instead focus on SVLTE. To be fair, in all the years i've been with Sprint (13) i never thought i would ever need or use that feature until i got the S3. The first time i unknowingly used it i didn't even realize that while on a call, i was playing WordFeud multiplayer. It's something i do all the time now, and definitely sad to see it gone on the newer phones.
As their LTE network gets more robust and mature, it won't be much of an issue, but as of now 3G is in more places than their LTE network is. So...
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Thanks to both you guys for setting me straight. I was parroting what I'd always heard from the OG Evo (which I had) and then the 3D, which I just left. Of course, you couldn't do SVDO on either. On the 3D, though, you could do a call + data if on 4G (Wimax), which was and still is, pretty spotty here in Minneapolis-St Paul. Of course, Sprint has been rolling out LTE for a while now. It appears, then disappears a lot. Unfortunately 3G has been awful for months. I will be so thankful when LTE is finally and fully deployed!

No problem, welcome. We are all here to help and learn from each other along the way. :good:

smarcin said:
Thanks to both you guys for setting me straight. I was parroting what I'd always heard from the OG Evo (which I had) and then the 3D, which I just left. Of course, you couldn't do SVDO on either. On the 3D, though, you could do a call + data if on 4G (Wimax), which was and still is, pretty spotty here in Minneapolis-St Paul. Of course, Sprint has been rolling out LTE for a while now. It appears, then disappears a lot. Unfortunately 3G has been awful for months. I will be so thankful when LTE is finally and fully deployed!
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Those devices did not support SVDO. I know the S3 and EVO LTE support it, and possible the Nexus LTE (additionally, the newest Optimus maybe?). I really liked this feature when on the phone and being able to quickly check email or pull up traffic info without relying on WiFi.
The S4 does not support simultaneous voice+data, and I believe that anandtech/ars had good articles describing the data paths employed by the HTC One and S4.
What I found interesting is that when the 4G connection drops out and 3G connects, I can just send a text and get 4G back immediately instead of waiting to hop towers. I suspect that a phone call would serve the same purpose.
Also, toggling 4G off and on will get you back the same mobile IP address. This is not the case with 3G, which results in a new IP address being assigned. In order to get a new IP on LTE, you have to toggle airplane mode (which is likely why this is the first step in troubleshooting LTE connectivity).

Thought I'd help you all out to understand it since you all are sooooo new to having LTE on your phones and all (that was a joke, don't get bent out of shape over it....)
The LTE standard only supports packet switching with its all-IP network. Voice calls in GSM, UMTS and CDMA2000 are circuit switched, so with the adoption of LTE, carriers will have to re-engineer their voice call network. Three different approaches sprang up. Most major backers of LTE preferred and promoted VoLTE (Voice over LTE, an implementation of IP Multimedia Subsystem or IMS) from the beginning. The lack of software support in initial LTE devices as well as core network devices however led to a number of carriers promoting VoLGA (Voice over LTE Generic Access) as an interim solution.[13] The idea was to use the same principles as GAN (Generic Access Network, also known as UMA or Unlicensed Mobile Access), which defines the protocols through which a mobile handset can perform voice calls over a customer's private Internet connection, usually over wireless LAN. VoLGA however never gained much support, because VoLTE (IMS) promises much more flexible services, albeit at the cost of having to upgrade the entire voice call infrastructure. While the industry has seemingly standardized on VoLTE for the future, the demand for voice calls today has led LTE carriers to introduce CSFB (Circuit Switched Fallback) as a stopgap measure. When placing or receiving a voice call, LTE handsets will fall back to old 2G or 3G networks for the duration of the call.
Source
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Just to be a bit more clear, it was not a sprint decision it is based on Qualcomm's chip design. The s4 krait simply supported svdo out the box and the snapdragon 600 doesn't.

themuffinman said:
Just to be a bit more clear, it was not a sprint decision it is based on Qualcomm's chip design. The s4 krait simply supported svdo out the box and the snapdragon 600 doesn't.
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I am not sure that is correct. First of all, the 600 is the CPU, not the modem - which is a separate component altogether. Secondly, I believe SVDO support is more a factor of the front end RF design being set up to feed multiple transmit paths to the modem, which in the case of the Qualcomm modem, I believe has the necessary additional ports to handle it. However, it would have necessitated a more complex RF design which Sprint and Samsung probably opted to forgo, given that Sprint's is already getting on the LTE bandwagon.

myphone12345 said:
I am not sure that is correct. First of all, the 600 is the CPU, not the modem - which is a separate component altogether. Secondly, I believe SVDO support is more a factor of the front end RF design being set up to feed multiple paths to the modem, which in the case of the Qualcomm modem, I believe has the necessary additional ports to handle it. However, it would have necessitated a more complex RF design which Sprint and Samsung probably opted to forgo, given that Sprint's is already getting on the LTE bandwagon.
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You are absolutely correct but wouldn't that be dependent on whether the modem supported that design?

themuffinman said:
You are absolutely correct but wouldn't that be dependent on whether the modem supported that design?
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My best guess is that the advanced modem in the S4 could handle it, but to add it on top of SVLTE along with the newer MIMO antenna configurations and multi-band transceivers and switches found in the latest LTE capable handsets would require the addition of another RF chain in the device and thus significantly raise the complexity of the design to a degree that doesn't make it worthwhile for Samsung to implement it.

It's not going to happen.... It's a USA cdma limitation it has NOTHING to do with the phone
Sent from my GT-I9505 using xda premium

hyelton said:
It's not going to happen.... It's a USA cdma limitation it has NOTHING to do with the phone
Sent from my GT-I9505 using xda premium
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Yes, for the most part, cdma devices has never been able to do voice and 3g data simultaneously but there is something called svdo which allows supported devices to do just that. The HTC thunderbolt on verizon was one of the first phones to support svdo(simultaneous voice and data over 3g on a cdma network). Getting it to work has absolutely nothing to do with the network but how the phone is designed. Now I am a sprint customer so I don't know what other devices supported it on verizon since but I do know that both sprint and verizon's gs3 both support svdo as well as sprints evo lte and a few other devices.

hyelton said:
It's not going to happen.... It's a USA cdma limitation it has NOTHING to do with the phone
Sent from my GT-I9505 using xda premium
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Not true. There have been several devices that could do it.

myphone12345 said:
Not true. There have been several devices that could do it.
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Oh theres plenty!! of devices that support it!! Its the NETWORK that does not.

hyelton said:
Oh theres plenty!! of devices that support it!! Its the NETWORK that does not.
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You keep talking like the network is preventing it from being possible, yes there are technical obsticals but obviously there are ways around it. So the botton line is, can you have a phone thats on a cdma network that can do voice and 3g data at the same time? That answer is yes

Seriously, why are we arguing this much about this? Simultaneous voice AND 3G on Sprint, yes, period. S3 and Evo LTE do it, S4 doesn't. Let's move on to other things.