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Can anyone confirm Simultaneous voice and data capability on the E3D? Is it on 4G only or both 3G & 4G?
there won
t ever be simultaneous voice and data on 3G - sprint is a CDMA network. Not GSM. It will work on 4G because 4G uses a diff radio.
Actually simultaneous voice and data over 3G on CDMA is possible, see verizon thunderbolt for an example. Having said that however, I doubt the same holds true for the E3D.
Sent from my PC36100 using XDA Premium App
dynamicadv said:
there won
t ever be simultaneous voice and data on 3G - sprint is a CDMA network. Not GSM. It will work on 4G because 4G uses a diff radio.
Click to expand...
Click to collapse
I believe it takes carrier side upgrades as well as hardware phone upgrades. It called SV-DO.
The chip is capable of dual-mode, but I don't think Sprint's network is currently setup for it.
I got my tbolt on launch day, but I don't have lte service in my area so I'm on the ehrpd network 99% of the time.
When I first got the phone I got really impressive ehrpd speeds 2.5 mbps and 1.3 - 1.5 mbps up.
Now after months of lte phones being out I get 1.3 Max and 800 up.
I know that ehrpd is the same as far as maximum speed, but I'm wondering of anyone else has noticed this slowdown in 3g areas, possibly caused by more users on ehrpd
Sent from my ADR6400L using XDA App
movielover76 said:
I got my tbolt on launch day, but I don't have lte service in my area so I'm on the ehrpd network 99% of the time.
When I first got the phone I got really impressive ehrpd speeds 2.5 mbps and 1.3 - 1.5 mbps up.
Now after months of lte phones being out I get 1.3 Max and 800 up.
I know that ehrpd is the same as far as maximum speed, but I'm wondering of anyone else has noticed this slowdown in 3g areas, possibly caused by more users on ehrpd
Sent from my ADR6400L using XDA App
Click to expand...
Click to collapse
EHRPD (evolved high rate packet data) is a protocol subset of cdm2000, which is the network. NOT EHRPD. HRPD is implemented in 1xRTT evolved networks such as EV-DO rev.0 and 1 in order to break from a switch based network to a packet based network. EHRPD is supposed to support hand-over from CDMA networks to LTE networks, however, Verizon hasn't widely implemented EHRPD so far as I can tell. I RARELY see a hand-off of an active data session back or forth from CDMA to LTE.
The only things that would really effect your speeds over a CDMA network would be the backing network of the base station (tower) or user base in the cell. I don't believe Verizon throttles that data. They certainly don't throttle data on LTE.
loonatik78 said:
EHRPD (evolved high rate packet data) is a protocol subset of cdm2000, which is the network. NOT EHRPD. HRPD is implemented in 1xRTT evolved networks such as EV-DO rev.0 and 1 in order to break from a switch based network to a packet based network. EHRPD is supposed to support hand-over from CDMA networks to LTE networks, however, Verizon hasn't widely implemented EHRPD so far as I can tell. I RARELY see a hand-off of an active data session back or forth from CDMA to LTE.
The only things that would really effect your speeds over a CDMA network would be the backing network of the base station (tower) or user base in the cell. I don't believe Verizon throttles that data. They certainly don't throttle data on LTE.
Click to expand...
Click to collapse
So are you saying EHRPD towers are similar to LTE towers? Or am I way the hell off?
ghstrdr1985 said:
So are you saying EHRPD towers are similar to LTE towers? Or am I way the hell off?
Click to expand...
Click to collapse
ehrpd resides in the towers with lte and helps with the handoff between going from 4g back to 3g. how many towers currently have it? I do not know, but I'd say not that many.
ghstrdr1985 said:
So are you saying EHRPD towers are similar to LTE towers? Or am I way the hell off?
Click to expand...
Click to collapse
I'm saying there's not such thing as an EHRPD tower. You've got CDMA towers and you've got LTE. These technologies are VERY different. Let me try to break this down. I probably should have explained it better above.
First, for the record, for cost considerations, LTE and CDMA for Verizon come off the same physical towers. There's not much point in erecting different towers for different antennas if they're still physical space on existing towers.
So... from the beginning...
Verizon runs to completely separate networks today. One is based on CDMA technology, one on LTE. Let me start first with CDMA.
CDMA, otherwise known as Code Division Multiple Access, is a method of physically transmitting a signal to and from a device. Verizon implements asynchronous CDMA to avoid issues with doppler shift in the signal frequency and speed of light delay from transmission to reception. CDMA is the radio access technology, NOT the protocol. The protocol is a patented technology known as cdma2000 and uses the CDMA radio access method as it's base layer.
cdma2000 is the protocol and encompasses a number of transmission protocols. Those would include IS-95, 1xRTT, 1xEV-DO, and the 1xEV-DO revisions 0, A, and B. To clarify, 1xEV-DO stands for single channel evolved-data optimized. EHRPD is a subset data transmission protocol of revision A of 1xEV-DO. I believe that Verizon didn't implement EHRPD very widely in it's deployment of EV-DO rev.A because at the point of first introduction their path of evolution was undecided. They very well could have moved on with EV-DO rev. B and attained speeds comparable to WiMax while being able to upgrade many of the existing CDMA handsets with new firmware to utilize the newer revision, just as had been done when rev. A came. One of the issues with cdma2000 is that the protocols aren't compatible. EV-DO used to stand for Evolution-Data Only, because data is all it does. When the devices is used for a voice call, it must switch protocol modes back to IS-95 to interface with the switch-based voice network on the backside of the tower. This is why CDMA devices cannot do data while in call.
LTE is a completely different technology altogether. It's an evolution of GSM, and accordingly, expands upon the basic technology of GSM. The base of GSM is TDMA, Time Division Multiple Access. Each device has a time slot that it's allowed to transmit or receive data on, usually a small fraction of a second. LTE also makes use of FDMA, Frequency Division Multiple Access, meaning that there are many frequencies that can be used to address different devices.
LTE makes uses of protocols, some similar to GSM protocols, to transmit and receive data. These are described in the LTE specification, and as time passes, additional LTE protocol specifications will be added, such as LTE Advance.
The goal of Verizon is to have a pure LTE network in the future. LTE is not simply a data transmission technology, but rather a full blown cellular standard just as GSM is, and as such can carry voice. When it does, voice will be basically VoIP, as LTE is a completely packet based technology and doesn't depend upon network switching (unlike IS-95 and 1xRTT, which is still the voice carrier technology supported by cdma2000). Carriers like this because it makes upgrading and scaling the network easier. The end result will be a more seamless user experience and the ability to integrate native voice features into data features of the device.
Modern LTE devices accomplish voice and data by using 2 different radios. In the Thunderbolt, that would be the CDMA radio built into the MSM8655 Soc processor and the MDM9600 LTE modem chip. Currently, this is the ONLY combination of chips that allows full simultaneous voice and data over the entire network. Unless the LTE chip of the devices handles both CDMA and LTE, AND can interlink with the SoC radio to manage SAR power limits, this will remain the case. Currently, only Qualcomm chipsets accomplish this, making the Thunderbolt the most functionally connected device ever sold on Verizon.
If anyone is interested in knowing more, let me know. I'll write up a bit more in-depth primer on these subjects and post it.
Thanks
Sorry, I did post this in the wrong forum, and as such I deserve some flaming lol.
I've been around here for a little while since jan 2011, it was just a brainfart.
I know I am connected to ehrpd because under about phone it says cdma - ehrpd
I'm just a little south, maybe 6 miles for the LTE market in Northern NJ, I was just wondering if anyone else in a 3G area experienced a similar slowdown.
I bought a 4G handset knowing it might be awhile before i get LTE, because I was concerned about being stuck in a tiered data plan when I upgraded to 4G, turned out not to be an issue, but I'm still happy I got it, it's a great phone
and I do use LTE occasionally like when to school.
Thanks for all the replies, and if theirs any other oddballs in a 3G area most of the time with a thunderbolt, let me know if you've experienced anything similair
loonatik78 said:
I'm saying there's not such thing as an EHRPD tower. You've got CDMA towers and you've got LTE. These technologies are VERY different. Let me try to break this down. I probably should have explained it better above.
First, for the record, for cost considerations, LTE and CDMA for Verizon come off the same physical towers. There's not much point in erecting different towers for different antennas if they're still physical space on existing towers.
So... from the beginning...
Verizon runs to completely separate networks today. One is based on CDMA technology, one on LTE. Let me start first with CDMA.
CDMA, otherwise known as Code Division Multiple Access, is a method of physically transmitting a signal to and from a device. Verizon implements asynchronous CDMA to avoid issues with doppler shift in the signal frequency and speed of light delay from transmission to reception. CDMA is the radio access technology, NOT the protocol. The protocol is a patented technology known as cdma2000 and uses the CDMA radio access method as it's base layer.
cdma2000 is the protocol and encompasses a number of transmission protocols. Those would include IS-95, 1xRTT, 1xEV-DO, and the 1xEV-DO revisions 0, A, and B. To clarify, 1xEV-DO stands for single channel evolved-data optimized. EHRPD is a subset data transmission protocol of revision A of 1xEV-DO. I believe that Verizon didn't implement EHRPD very widely in it's deployment of EV-DO rev.A because at the point of first introduction their path of evolution was undecided. They very well could have moved on with EV-DO rev. B and attained speeds comparable to WiMax while being able to upgrade many of the existing CDMA handsets with new firmware to utilize the newer revision, just as had been done when rev. A came. One of the issues with cdma2000 is that the protocols aren't compatible. EV-DO used to stand for Evolution-Data Only, because data is all it does. When the devices is used for a voice call, it must switch protocol modes back to IS-95 to interface with the switch-based voice network on the backside of the tower. This is why CDMA devices cannot do data while in call.
LTE is a completely different technology altogether. It's an evolution of GSM, and accordingly, expands upon the basic technology of GSM. The base of GSM is TDMA, Time Division Multiple Access. Each device has a time slot that it's allowed to transmit or receive data on, usually a small fraction of a second. LTE also makes use of FDMA, Frequency Division Multiple Access, meaning that there are many frequencies that can be used to address different devices.
LTE makes uses of protocols, some similar to GSM protocols, to transmit and receive data. These are described in the LTE specification, and as time passes, additional LTE protocol specifications will be added, such as LTE Advance.
The goal of Verizon is to have a pure LTE network in the future. LTE is not simply a data transmission technology, but rather a full blown cellular standard just as GSM is, and as such can carry voice. When it does, voice will be basically VoIP, as LTE is a completely packet based technology and doesn't depend upon network switching (unlike IS-95 and 1xRTT, which is still the voice carrier technology supported by cdma2000). Carriers like this because it makes upgrading and scaling the network easier. The end result will be a more seamless user experience and the ability to integrate native voice features into data features of the device.
Modern LTE devices accomplish voice and data by using 2 different radios. In the Thunderbolt, that would be the CDMA radio built into the MSM8655 Soc processor and the MDM9600 LTE modem chip. Currently, this is the ONLY combination of chips that allows full simultaneous voice and data over the entire network. Unless the LTE chip of the devices handles both CDMA and LTE, AND can interlink with the SoC radio to manage SAR power limits, this will remain the case. Currently, only Qualcomm chipsets accomplish this, making the Thunderbolt the most functionally connected device ever sold on Verizon.
If anyone is interested in knowing more, let me know. I'll write up a bit more in-depth primer on these subjects and post it.
Click to expand...
Click to collapse
Man that is a mouthful. However, the Thunderbolt can talk & surf the web in 3G mode, not just LTE. So LTE will be a competition for GSM in the coming years?
Sent from my ADR6400L using xda premium
ghstrdr1985 said:
Man that is a mouthful. However, the Thunderbolt can talk & surf the web in 3G mode, not just LTE. So LTE will be a competition for GSM in the coming years?
Sent from my ADR6400L using xda premium
Click to expand...
Click to collapse
it'll be the 4th generation of GSM (4g).
ghstrdr1985 said:
Man that is a mouthful. However, the Thunderbolt can talk & surf the web in 3G mode, not just LTE. So LTE will be a competition for GSM in the coming years?
Sent from my ADR6400L using xda premium
Click to expand...
Click to collapse
That's what I said. Its because the Tbolt has 2 cdma radios.
loonatik78 said:
That's what I said. Its because the Tbolt has 2 cdma radios.
Click to expand...
Click to collapse
This phone has sooo much potential but is inhibited by Verizon.
Sent from my ADR6400L using xda premium
I know Verizon Wireless uses a CDMA network for their services. But LTE is GSM right? I remember the UMB standard which gives 4G on CDMA was abandoned in favor of LTE. So does that mean the Droid RAZR/MAXX have both GSM and CDMA radios? Also is it possible to have voice/video calling on 4G LTE?
Yes, the XT912, XT910, and Maxx phones use the same chipset and have GSM and CDMA radios. They have just been disabled for the different regions.
LTE is entirely separate and different then CDMA/GSM. LTE uses the 700Mhz spectrum, while GSM/CDMA uses 850Mhz to 2100Mhz. Eventually, once LTE becomes more mainstream will we see chipsets that support GSM/CDMA/LTE/HSPA+
The Razr has the capabilities to be used with GSM and CDMA, carrier depending. But not LTE. It simply doesnt have the chipset.
And 4G is a loose term. It is used in reference to LTE, and HSPA+. Since our phone only supports data speeds up to 14.4Mb down (HSPA), it is not a 4G device.
g2tegg said:
LTE is entirely separate and different then CDMA/GSM. LTE uses the 700Mhz spectrum, while GSM/CDMA uses 850Mhz to 2100Mhz. Eventually, once LTE becomes more mainstream will we see chipsets that support GSM/CDMA/LTE/HSPA+
The Razr has the capabilities to be used with GSM and CDMA, carrier depending. But not LTE. It simply doesnt have the chipset.
And 4G is a loose term. It is used in reference to LTE, and HSPA+. Since our phone only supports data speeds up to 14.4Mb down (HSPA), it is not a 4G device.
Click to expand...
Click to collapse
The cdma Droid razr and maxx are LTE phones. I don't know about the GSM Motorola razr.
Sent from my DROID RAZR using XDA
wildklymr said:
The cdma Droid razr and maxx are LTE phones. I don't know about the GSM Motorola razr.
Sent from my DROID RAZR using XDA
Click to expand...
Click to collapse
it often makes economic sense for a large scale electronics manufacturer to make only a single bit of hardware and then enable/disable various bits in software. Intel has been doing this for almost 30 years. I've seen several references to all RAZRs having identical hardware including one from a Verizon employee who claimed could flash a RAZR from gsm to cdma and then back again.
---------- Post added at 08:02 PM ---------- Previous post was at 08:00 PM ----------
what i often wonder is if there is a 1700 (tmobile) radio buried somewhere deep in the RAZR.
iolinux333 said:
]what i often wonder is if there is a 1700 (tmobile) radio buried somewhere deep in the RAZR.
Click to expand...
Click to collapse
Nah, iFixit did a teardown and found a Qualcomm MDM6600 baseband. That doesn't have T-Mobile's frequencies. If it had the option for pentaband GSM, Motorola would definitely market the hell out of that - think about how many more customers they could get.
http://www.ifixit.com/Teardown/Motorola-Droid-RAZR-Teardown/7048/1
wildklymr said:
The cdma Droid razr and maxx are LTE phones. I don't know about the GSM Motorola razr.
Sent from my DROID RAZR using XDA
Click to expand...
Click to collapse
Your right. I had no idea that Verizon had a LTE version. I guess thats the difference between the XT910 and the XT912. Im curious to know if the XT912, unlocked, will work with other LTE carriers besides Verizon.
On top of that, I am unable to find any ifixit reviews of the XT912. Only the XT910. Is there actual hardware differences?
My question is since LTE is GSM and Verizon is NOT GSM, how do they manage to provide LTE service? Does the phone keep switching between CDMA and LTE or what?
cheekrox said:
My question is since LTE is GSM and Verizon is NOT GSM, how do they manage to provide LTE service? Does the phone keep switching between CDMA and LTE or what?
Click to expand...
Click to collapse
When you're in an area that has LTE coverage, you'll get LTE. When you're in an area that does not have LTE coverage, the phone automatically switches to CDMA.
The Verizon RAZR does have a GSM radio. But as others have said, it's disabled. Verizon has said they're going to enable the GSM radio on the Droid 4 for international use in the future, and since the Droid 4 and the RAZR are pretty much identical internally, many people think that Verizon may eventually enable the GSM radio on the RAZR as well at some point (though there has not been any official or unofficial word from Verizon/Motorola on that).
To answer your questions:
1. They are using GSM. They partnered with Vodafone in 2007 and have been building their LTE network since then.
2. Yes. CDMA for 3G and LTE for 4G.
cheekrox said:
My question is since LTE is GSM and Verizon is NOT GSM, how do they manage to provide LTE service? Does the phone keep switching between CDMA and LTE or what?
Click to expand...
Click to collapse
Riight! So the DROID RAZR keeps switching between LTE (which is GSM) and Verizon's CDMA network right? Which means that it HAS TO have a GSM radio in it for LTE to function? Also I heard voice is NOT possible over 4G, is this true?
cheekrox said:
Riight! So the DROID RAZR keeps switching between LTE (which is GSM) and Verizon's CDMA network right? Which means that it HAS TO have a GSM radio in it for LTE to function? Also I heard voice is NOT possible over 4G, is this true?
Click to expand...
Click to collapse
Like myself and others have already said, there is a GSM radio in the Verizon RAZR. It is just not possible to use it. The Verizon RAZR will not work on a GSM network (at least not until the capability is enabled by Verizon or a developer).
VoLTE (voice over LTE) is possible, but no one is really doing that yet.
LTE is a form of GSM, but it's best to think about the two as completely different since in the real world their manner of operation is different. So don't think of LTE and GSM as the same type of technology that's interchangeable. Think of each as separate from the other.
Also, don't confuse what is often referred to as 4G on GSM networks (HSPA+) and LTE. They're also completely different. HSPA+ is often called 4G, but it's actually just an extension of existing 3G technology. LTE, for all intensive purposes, should be viewed as a completely different technology.
bsweetness said:
Like myself and others have already said, there is a GSM radio in the Verizon RAZR. It is just not possible to use it. The Verizon RAZR will not work on a GSM network (at least not until the capability is enabled by Verizon or a developer).
VoLTE (voice over LTE) is possible, but no one is really doing that yet.
LTE is a form of GSM, but it's best to think about the two as completely different since in the real world their manner of operation is different. So don't think of LTE and GSM as the same type of technology that's interchangeable. Think of each as separate from the other.
Also, don't confuse what is often referred to as 4G on GSM networks (HSPA+) and LTE. They're also completely different. HSPA+ is often called 4G, but it's actually just an extension of existing 3G technology. LTE, for all intensive purposes, should be viewed as a completely different technology.
Click to expand...
Click to collapse
I agree with you 100 percent. Except the fact that LTE is not a form of GSM nor CDMA. Its completely different.
The funny part about HSPA + is that its HSPA with mimo technology. Theoretically making it 3g on steroids.
razr maxx
There are two separate models of the Razr Maxx.
the first one, the xt912 released months ago is for the US market and is a CDMA phone
here s the link with all the specs:
developer . motorola . com / products / droid-razr-maxx-xt912
the second one, the xt910, is a gsm phone. and works on 2g and 3g networks around the world.
Connectivity
GSM 850/900/1800/1900,
W-CDMA 850/900/1900/2100
as u can read as well on Motorola website.
i cant post entire links due to restrictions to my new account but if u go on typing the url without spaces u will see all the specs
developer. motorola . com / products / razr_maxx_xt910
I have already bought the xt910 and i use it in Australia on normal 2g, 3g and 3.5g capable networks. It works on Telstra Next G network as well. The battery is amazing. 2 days of intense use in 3.5g without recharging it. 5 days of moderate use (gps - bluetooth - sync off) without a charge.
If you head over to the bionic forum a developer has been able to unlock the GSM radio for the RAZR/Droid 4/Bionic. It's compatible with ATT HSPA and T-Mobile edge. As far as I know it's still a work in progress.
Sent from my DROID RAZR MAXX via XDA
And yes at this time no carrier (that I know of) carries voice over LTE. It's still in the experimental stages.
Sent from my DROID RAZR MAXX via XDA
convert a cdma xt912
Hey guys I want to know if anyone could convert a cdma xt912 into a GSM phone by using a ROM or something ??
alyreda said:
Hey guys I want to know if anyone could convert a cdma xt912 into a GSM phone by using a ROM or something ??
Click to expand...
Click to collapse
Nope, you can get it running on 2G though I believe.
Sent from my ADR6425LVW
So is there any way I could get 4G working on my XT910?
cheekrox said:
So is there any way I could get 4G working on my XT910?
Click to expand...
Click to collapse
Not that I know of.
Sent from my ADR6425LVW
Just wondering why Sprint doesn't continue to use Wimax on devices like the E4GLTE? With GSM carriers they're incorporating 3g along with HSPA+ and rolling out LTE (AT&T), wich is great because between all 3 options you should be able to get some awesome data speeds pretty much all the time. Wouldn't it be great if you lived in a Wimax area with LTE you could fall back on one or the other depending on wich had a stronger signal. Im just wondering why Sprint is not going this route. With all of the reviews of the E4GLTE the one resounding fact is that there is currently no LTE anywhere and 3G speeds are horrid. It seems like keeping Wimax and using it when you can would have been a good option, at least temporarily. Any ideas?
dhoshman said:
Just wondering why Sprint doesn't continue to use Wimax on devices like the E4GLTE? With GSM carriers they're incorporating 3g along with HSPA+ and rolling out LTE (AT&T), wich is great because between all 3 options you should be able to get some awesome data speeds pretty much all the time. Wouldn't it be great if you lived in a Wimax area with LTE you could fall back on one or the other depending on wich had a stronger signal. Im just wondering why Sprint is not going this route. With all of the reviews of the E4GLTE the one resounding fact is that there is currently no LTE anywhere and 3G speeds are horrid. It seems like keeping Wimax and using it when you can would have been a good option, at least temporarily. Any ideas?
Click to expand...
Click to collapse
Well...umm...
1. Wimax requires a different radio. LTE is built into the CPU, so you'd have to have a separate chip for wimax.
2. Wimax sucks. Its only claim to fame is that it was the first 4G available. Building penetration is crap.
3. Having both in the phone would cause power drains like you wouldn't believe.
4. Sprint is shutting down Wimax to focus on LTE. I imagine the expense of keeping both running is pretty high.
Just sit back and be patient. LTE will be there soon enough. Or stick with your current wimax phone and wait until you have LTE to upgrade. If your main reason for the upgrade is LTE then you should reconsider your options.
Remember HD DVDs? and BluRay? Which one is still around?
Also, Plasma, DLP, LCD, LED technologies in TVs. Its a 'technology war' thing.
WiMax and LTE were two technologies like this. LTE won as BluRay did and to keep up, Sprint has to rebuild their network. Also, the reasons stated above in smw6180's post.
I actually could care less about which one I have as I'm on wifi most of the time. This was truly "Just a question". But isn't HSPA+ a dead technology but its still being included into GSM devices even the ones with LTE. Im just wondering why it is and Wimax isnt. And where I'm at Wimax is awesome I get anywhere from 4-8mbs when im on it.
Sent from my SPH-D710 using Tapatalk 2
HSPA+ isn't dead at all. The rest of the world uses it. Try a T-Mobile or At&t phone on HSPA+ 42.
Sent from my Nexus S 4G using Tapatalk 2
I most certainly would love to. I hope the International GS3 has HSPA+ and I can get it unlocked and use it on T-mobile. I miss GSM but dont really care much for ATT and I read somewhere T-Mobile is revamping there prepaid data plans, so hopefully I will get to try it out.
david279 said:
HSPA+ isn't dead at all. The rest of the world uses it. Try a T-Mobile or At&t phone on HSPA+ 42.
Sent from my Nexus S 4G using Tapatalk 2
Click to expand...
Click to collapse
smw6180 said:
Well...umm...
1. Wimax requires a different radio. LTE is built into the CPU, so you'd have to have a separate chip for wimax.
2. Wimax sucks. Its only claim to fame is that it was the first 4G available. Building penetration is crap.
3. Having both in the phone would cause power drains like you wouldn't believe.
4. Sprint is shutting down Wimax to focus on LTE. I imagine the expense of keeping both running is pretty high.
Just sit back and be patient. LTE will be there soon enough. Or stick with your current wimax phone and wait until you have LTE to upgrade. If your main reason for the upgrade is LTE then you should reconsider your options.
Click to expand...
Click to collapse
Totally agree, and number "2" is definitely a must for me I have tested it here and wimax well you said it, and more now is adding both radio and battery on-board will give a A+ with power as well
dhoshman said:
Just wondering why Sprint doesn't continue to use Wimax on devices like the E4GLTE? With GSM carriers they're incorporating 3g along with HSPA+ and rolling out LTE (AT&T), wich is great because between all 3 options you should be able to get some awesome data speeds pretty much all the time. Wouldn't it be great if you lived in a Wimax area with LTE you could fall back on one or the other depending on wich had a stronger signal. Im just wondering why Sprint is not going this route. With all of the reviews of the E4GLTE the one resounding fact is that there is currently no LTE anywhere and 3G speeds are horrid. It seems like keeping Wimax and using it when you can would have been a good option, at least temporarily. Any ideas?
Click to expand...
Click to collapse
GSM carriers include 3g, HSPA+, and LTE because HSPA+ is an extension to 3G, using the same radio. Therefore there are still only two radios in the device: WCDMA (which is 3G with HSPA+) and LTE. Sprint's doing the same thing - their equivalent is having 1xAdvanced, EVDO rev B, and LTE.
phealy said:
GSM carriers include 3g, HSPA+, and LTE because HSPA+ is an extension to 3G, using the same radio. Therefore there are still only two radios in the device: WCDMA (which is 3G with HSPA+) and LTE. Sprint's doing the same thing - their equivalent is having 1xAdvanced, EVDO rev B, and LTE.
Click to expand...
Click to collapse
Great answer my friend. I completely understand now. I didn't know what 1x advanced and EVDO rev B were before. Now are any of those capable of the speeds HSPA+ is though?
Sent from my SPH-D710 using Tapatalk 2
dhoshman said:
Great answer my friend. I completely understand now. I didn't know what 1x advanced and EVDO rev B were before. Now are any of those capable of the speeds HSPA+ is though?
Sent from my SPH-D710 using Tapatalk 2
Click to expand...
Click to collapse
No, HSPA is in its own class of speed, CDMA doesn't have anything close to it. And it's not like sprint's network could handle much anyway, since there's plenty of dirtbags abusing the Unlimited service.
Exactly what subject says.
Can it?
a.mcdear said:
Exactly what subject says.
Can it?
Click to expand...
Click to collapse
I don't believe so. From what I understand, XLTE utilizes the 750MHz and 1700MHz bands. The Rezound only supports the 750MHz band.
a.mcdear said:
Exactly what subject says.
Can it?
Click to expand...
Click to collapse
XLTE is just a branding of Verizon's newer LTE network and deployment of VoLTE (Voice over LTE)
The Rezound only supports 700Mhz Band 13 LTE...
Verizon's implementation of VoLTE/XLTE is using 1700Mhz Band 4 LTE...
So, not possible in it's current implementation by Verizon.
Most LTE handsets are capable of VoLTE, technically speaking, but it appears carriers seem to be implementing it in a very non-generic way. In the US carriers (Verizon especially so) are still worried about keeping their LTE networks locked down to their own subsidized handsets only. Implementing a standardized VoLTE implementation could open up their network to third party handsets, and VZW don't like that.
Cool guys, thanks for the info!
I've noticed a huge slowdown of data speeds recently...maybe it's the unlimited throttling thing maybe XLTE implementation, I'm not sure, but I don't like it. (Los Angeles, CA). Just putting it out there, not sure if others have noticed as well.
Sent from my ADR6425LVW using xda app-developers app