Does anyone know if the S5 is tri-band with spark just like the 720T S4 ?
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Yep. It's spark enabled. Which I hate because no simultaneous voice and data over LTE
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I heard it's supposed to be coming sometime around June correct? Trying to remember where I saw I mentioned
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Does anyone know if the S5 is tri-band with spark just like the 720T S4 ?
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yea...sprint hasn't upgraded their network to enable simultaneous voice and LTE with spark....but i heard they are working on....i hope its not region based and they can get all the towers working on it at once
i miss being able to mess around on the internet while on hold
It has nothing to do with upgrading spark to enable voice and lte, sorry but that is completely wrong. Its device specific and not the network, the reason why its not possible is because there is only one radio path with the current crop of tri-band devices which makes it impossible to have lte and voice at the same time so nothing can be done on the network side to make it work. The reason why it was possible on previous non tri-band devices was because they had more than one radio path. I am sure its possible but maybe it just proved too costly and too inefficient to implement Also keep in mind that none of the other wireless carriers can do voice and lte at the same time. The gs5 on att/tmobile, once a call is initiated will drop lte all together but at least they still have the luxury of hspa to fall back on for data in the mean time.
Are you sure? Everything I gave read indicates it's a network issue rather than hardware
The s4 didn't have the svdo radio so we lost simultaneous voice and data on 3g and the original s4 could do it without the extra radio
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Non-triband Sprint LTE phones "supported simultaneous voice and LTE (SVLTE). It could do so with two separate transmission paths from the antennas to the chipset. Voice/texting could run via 1xRTT on one transmission path. LTE could run a separate path, allowing data and voice to be used simultaneously."
"In contrast, Sprint Triband LTE devices do not support two separate transmission paths. They have one path, shared by voice/SMS and data. We were alerted to this months in advance. However, we did not realize that the network would have to run on Circuit Switched Fallback in order for this to work and what the ramifications of this would be."
Source: http://s4gru.com/index.php?/blog/1/...-due-to-circuit-switched-fallback-technology/
It's a very informative and extensive read-up and explains, sadly, what is going on.
"In contrast, Sprint Triband LTE devices do not support two separate transmission paths. They have one path, shared by voice/SMS and data. We were alerted to this months in advance. However, we did not realize that the network would have to run on Circuit Switched Fallback in order for this to work and what the ramifications of this would be."
Are you sure? Everything I gave read indicates it's a network issue rather than hardware
The s4 didn't have the svdo radio so we lost simultaneous voice and data on 3g and the original s4 could do it without the extra radio
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Yes, I am very sure, its in the radio design. Even with previous devices that could do svdo and svlte, it was because of radio design of the hardware and not because of the network.
GS5 performs really well on tri-band. I'm getting up to around 40Mbps indoors at home, though I'm just a few blocks from a cellsite. The first 3 results are on Google Gigabit Fiber in KC, the second three are Sprint Spark.
https://dl.dropboxusercontent.com/u/3812896/Pics/Android/GFIber Sprint GS5.png
BTW, more on Google Fiber here...
http://www.dslreports.com/forum/r29157624-Google-Fiber-Kansas-City
great article and it proves my point that simultaneous voice and data will be available via triband LTE in the future and its a network issue, not phone hardware
"Yes, this is an issue of all Triband devices, as they are dependent on CSFB to be present on the Sprint network in order to be able to use LTE.
The problem is not Triband LTE devices, but rather that the Sprint network is not currently upgraded enough in all places that currently have LTE"
Basically, Switchback Mode needs to be enabled for us to have simultaneous voice and data over LTE
" when a Sprint LTE Triband device is in Sprint LTE coverage it parks only in LTE. And doing so means it cannot transmit calls without Circuit Switched Fallback (CSFB) on the network side. CSFB and eCSFB (Enhanced Circuit Switched Fallback) are network controls that will allow a single mode/single path network to operate in two modes, both CDMA and LTE"
Prior to triband phones, there were 2 radios...one for CDMA, and one for LTE...but now it's all over LTE radio for both calls and data...but not yet enabled, so it can only do 1 at a time currently
---------- Post added at 07:57 AM ---------- Previous post was at 07:09 AM ----------
it says right there in in bold in your quote that you need "Circuit Switched Fallback" to have 2 transmission paths on one radio...but it is not yet enabled
I am sorry but I don't think you understand what AJ was trying to say in that article. The reason why its not possible is because there is only one transmission path so its only possible for you to be connected either cdma or lte. The purpose of csfb is to let the tri-band device to know when to actually switch, thats why tri-band devices that are in areas that are not fully upgraded with csfb will have connection issues because it doesn't know when to switch. Simultaneous voice and data will not happen with the current hardware design of tri-band devices regardless of whats done in the network side.
I am sorry but I don't think you understand what AJ was trying to say in that article. The reason why its not possible is because there is only one transmission path so its only possible for you to be connected either cdma or lte. The purpose of csfb is to let the tri-band device to know when to actually switch, thats why tri-band devices that are in areas that are not fully upgraded with csfb will have connection issues because it doesn't know when to switch. Simultaneous voice and data will not happen with the current hardware design of tri-band devices regardless of whats done in the network side.
it says it right below
" when a Sprint LTE Triband device is in Sprint LTE coverage it parks only in LTE. And doing so means it cannot transmit calls without Circuit Switched Fallback (CSFB) on the network side. CSFB and eCSFB (Enhanced Circuit Switched Fallback) are network controls that will allow a single mode/single path network to operate in two modes, both CDMA and LTE"
EDIT: And when it talks about csfb is needed, its not needed to be able to do cdma and lte modes at the same time its needed to tell the device when to switch to either cdma or lte.
it says it right below
" when a Sprint LTE Triband device is in Sprint LTE coverage it parks only in LTE. And doing so means it cannot transmit calls without Circuit Switched Fallback (CSFB) on the network side. CSFB and eCSFB (Enhanced Circuit Switched Fallback) are network controls that will allow a single mode/single path network to operate in two modes, both CDMA and LTE"
yep....read the above....
---------- Post added at 02:36 PM ---------- Previous post was at 02:35 PM ----------
yea, but it says BOTH...not "either"
"allow a single mode/single path network to operate in two modes, both CDMA and LTE"
I heard it's supposed to be coming sometime around June correct? Trying to remember where I saw I mentioned
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Yes, I am very sure, its in the radio design. Even with previous devices that could do svdo and svlte, it was because of radio design of the hardware and not because of the network.
I am sorry but I don't think you understand what AJ was trying to say in that article. The reason why its not possible is because there is only one transmission path so its only possible for you to be connected either cdma or lte. The purpose of csfb is to let the tri-band device to know when to actually switch, thats why tri-band devices that are in areas that are not fully upgraded with csfb will have connection issues because it doesn't know when to switch. Simultaneous voice and data will not happen with the current hardware design of tri-band devices regardless of whats done in the network side.
it says it right below
" when a Sprint LTE Triband device is in Sprint LTE coverage it parks only in LTE. And doing so means it cannot transmit calls without Circuit Switched Fallback (CSFB) on the network side. CSFB and eCSFB (Enhanced Circuit Switched Fallback) are network controls that will allow a single mode/single path network to operate in two modes, both CDMA and LTE"
EDIT: And when it talks about csfb is needed, its not needed to be able to do cdma and lte modes at the same time its needed to tell the device when to switch to either cdma or lte.
Are you sure? Everything I gave read indicates it's a network issue rather than hardware
The s4 didn't have the svdo radio so we lost simultaneous voice and data on 3g and the original s4 could do it without the extra radio
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