I read there are some issues with the Galaxy S6 and some newer phones on Verizon being unable to do native simultaneous voice + data. I think because of a limit of the # of radios and/or antennas. What can we expect with the 5X on VZW? Thank you!
All new phones can do simultaneous voice and data only with VoLTE or while connected to WiFi. When connected to LTE (and no VoLTE) or 3G data they will drop to CDMA 1X if a call comes in. This is because they only have one antenna pathway and one radio. If they had a separate radio for LTE (like done older phones) it would drain battery almost twice as fast since mobile connection is one of your larger battery users.
Sent from my Nexus 6 using Tapatalk
_Dennis_ said:
All new phones can do simultaneous voice and data only with VoLTE or while connected to WiFi. When connected to LTE (and no VoLTE) or 3G data they will drop to CDMA 1X if a call comes in. This is because they only have one antenna pathway and one radio. If they had a separate radio for LTE (like done older phones) it would drain battery almost twice as fast since mobile connection is one of your larger battery users.
Sent from my Nexus 6 using Tapatalk
Click to expand...
Click to collapse
Ugh, what I feared. How do people do Nav and have phone calls at the same time? Is this going to work with VZW VoLTE on day one? May have made sense to design with two radios and two antennas and only activate the second one when necessary?
hytekjosh said:
Ugh, what I feared. How do people do Nav and have phone calls at the same time? Is this going to work with VZW VoLTE on day one? May have made sense to design with two radios and two antennas and only activate the second one when necessary?
Click to expand...
Click to collapse
Any time LTE is on the second would have to be on, or it wouldn't be able to seamlessly take the call, so that wouldn't have worked.
If your call isn't very long navigation would still work fine, it caches a bit in case of signal drop. The other option would be to download the route ahead of time, Google can do it now I think.
I have a feeling it should have VoLTE though, which would give you voice and data.
http://www.droid-life.com/2015/03/1...e-and-data-now-works-on-nexus-6-with-verizon/
Sent from my Nexus 6 using Tapatalk
_Dennis_ said:
Any time LTE is on the second would have to be on, or it wouldn't be able to seamlessly take the call, so that wouldn't have worked.
If your call isn't very long navigation would still work fine, it caches a bit in case of signal drop. The other option would be to download the route ahead of time, Google can do it now I think.
I have a feeling it should have VoLTE though, which would give you voice and data.
http://www.droid-life.com/2015/03/1...e-and-data-now-works-on-nexus-6-with-verizon/
Sent from my Nexus 6 using Tapatalk
Click to expand...
Click to collapse
Will the same limitations be on each carrier (ie. if I switch to AT&T I still need to use VoLTE for simultaneous voice + data)? Thank you!!
hytekjosh said:
Will the same limitations be on each carrier (ie. if I switch to AT&T I still need to use VoLTE for simultaneous voice + data)? Thank you!!
Click to expand...
Click to collapse
Nope, the way GSM and CDMA works are different. Say you don't have VoLTE and are on an LTE connection. The tower also has a spot for you on HSPDA and GSM if on Tmo or AT&T, or on CDMA if on Sprint or Verizon. If you get a call you fallback to HSPDA or GSM. A similar thing happens on CDMA. The difference is CDMA can't do voice and data on the same connection, GSM and HSPDA can do both.
Sent from my Nexus 6 using Tapatalk
_Dennis_ said:
Nope, the way GSM and CDMA works are different. Say you don't have VoLTE and are on an LTE connection. The tower also has a spot for you on HSPDA and GSM if on Tmo or AT&T, or on CDMA if on Sprint or Verizon. If you get a call you fallback to HSPDA or GSM. A similar thing happens on CDMA. The difference is CDMA can't do voice and data on the same connection, GSM and HSPDA can do both.
Sent from my Nexus 6 using Tapatalk
Click to expand...
Click to collapse
Really wish phones included a Ev radio so this would not be an issue. I wonder if the voice quality/codec on AT&T has improved over the years? Last I used them their voice quality was far inferior to VZW. May be time to consider a carrier switch.
I've not had problems with voice quality, the few times I call on AT&T. They weren't as good as Sprint (their new network has simply amazing voice quality, and data was OK lol).
Mostly I use Google voice via hangouts to make calls, so the network data is more important then voice quality.
Sent from my Nexus 6 using Tapatalk
_Dennis_ said:
All new phones can do simultaneous voice and data only with VoLTE or while connected to WiFi. When connected to LTE (and no VoLTE) or 3G data they will drop to CDMA 1X if a call comes in. This is because they only have one antenna pathway and one radio. If they had a separate radio for LTE (like done older phones) it would drain battery almost twice as fast since mobile connection is one of your larger battery users.
Sent from my Nexus 6 using Tapatalk
Click to expand...
Click to collapse
How new? My S4 gets simultaneous voice/data on lte, but not on 3g. Are you sure you're right about this?
Well, the S4 is not a new phone. And yes I'm certain without advanced calling (or VoLTE) you will not have voice and data on LTE at the same time.
Sent from my Nexus 6 using Tapatalk
Something I'm just realizing...I have a lot of friends and offices that have cell phone amplifier / extender systems that only repeat 3G not LTE. With no 3G radio this phone will be only able to do 1x for voice/data?! I think its also crazy that pure data devices such as the MiFi/personal hotspots still include ability to do EvDo Rev A yet phones don't!
jackdubl said:
How new? My S4 gets simultaneous voice/data on lte, but not on 3g. Are you sure you're right about this?
Click to expand...
Click to collapse
The S4 had extra antennas unlike the newer phones because of VoLTE. The S4 had both radios on at the same time which eats more battery on a call with VoLTE you have improved battery life during a call and do both at the same time. The move was intentional to save costs as well as battery life in the long run.
Sent from my SM-N920T using Tapatalk
I just got my Nexus 5X up and running on verizon. With my Galaxy Nexus I was about to take a phone call while tethering, but can't do that on this phone. Is there a fix for this? It's kind of a bummer because I tether often and take phone calls.
Edit: (12/18/2015) I figured it out. Chatted with VZW tech support to enable HD voice feature, and made sure "enhanced LTE mode" was on in settings. Voice+Data work simultaneously now!
Update: (1/19/2016) I have still intermittently had issues with simultaneously voice+data. I started to wonder if it could depend on who you are calling or what tower you are connected to. I powered down my phone and pulled the sim card for a few seconds, then rebooted and it worked again.
Related
Verizon has a Voice over LTE system coming out in the next year(according to them). That would allow the LTE radio to not just be used for sweet delicious data, but be used for voice(minutes?) too. Is this something that the current Galaxy Nexus will be capable of in the future via firmware update? This would solve some of the battery draining problems related to using a LTE phone. It would suck burro pene having a relatively new LTE phone and not be able to use Verizon's forthcoming VoLTE platform in a few months, if there is a huge benefit from it.
Pacifik said:
Verizon has a Voice over LTE system coming out in the next year(according to them). That would allow the LTE radio to not just be used for sweet delicious data, but be used for voice(minutes?) too. Is this something that the current Galaxy Nexus will be capable of in the future via firmware update? This would solve some of the battery draining problems related to using a LTE phone. It would suck burro pene having a relatively new LTE phone and not be able to use Verizon's forthcoming VoLTE platform in a few months, if there is a huge benefit from it.
Click to expand...
Click to collapse
I don't see how using LTE for voice AND data will make battery life any better.
Chirality said:
I don't see how using LTE for voice AND data will make battery life any better.
Click to expand...
Click to collapse
turn off the CDMA radio completely?
crazy talk said:
turn off the CDMA radio completely?
Click to expand...
Click to collapse
The LTE radio is the one that burns the battery, not the CDMA radio. So once you start doing voice and data both over LTE its gonna rape the battery lol.
Currently you get a call it's handed off to the CDMA antenna. When on LTE both the CDMA for voice and LTE for data are on. Whereas with VoLTE while on LTE there is no hand off, therefore no secondary voice antenna needs to be on as the LTE handles it.
Pacifik said:
Currently you get a call it's handed off to the CDMA antenna. When on LTE both the CDMA for voice and LTE for data are on. Whereas with VoLTE while on LTE there is no hand off, therefore no secondary voice antenna needs to be on as the LTE handles it.
Click to expand...
Click to collapse
That's not true at all. When the CDMA radio is on for voice communication it turns *off* the LTE radio. We know this because voice and data at the same time are not possible on most LTE phones.
If you used the LTE radio for voice communication, as well as data, it would *completely* destroy your battery life.
hotleadsingerguy said:
That's not true at all. When the CDMA radio is on for voice communication it turns *off* the LTE radio. We know this because voice and data at the same time are not possible on most LTE phones.
If you used the LTE radio for voice communication, as well as data, it would *completely* destroy your battery life.
Click to expand...
Click to collapse
On Verizon LTE phones you can 100% definitely use 4g data while on 3g voice, most can't do 3g simultaneous voice and data. While LTE ants use more power, powering up a second antenna while already using the LTE will hurt even more. There will also be usually be an increase in call quality on an LTE call. All of this is under the assumption you actually plan on using the 4G network.
Important question that needs an answer
I too am considering getting the new Galaxy Nexus on VZ. The battery issue I find secondary to my main concern, but it should be obvious that using only one radio (LTE) will have power saving benefits vs two radios. If just using voice, it may be a net loss of battery life. I guess we'll see how LTE stacks up to CDMA power consumption.
But here is the important question: will the SGN be upgradeable to support VoLTE (Voice over LTE) and the accompanying high-definition audio codec AMR-WB. You see, your horrible-sounding cell calls will transform to sounding better than a land line (assuming, of course, a compatible phone on the other end). It is even conceivable one could call VoIP landlines that support this codec and get good audio quality.
So you see, it is really all about the audio quality. Battery life is secondary, and may go up or down depending on your useage of voice only or voice and data.
[email protected] said:
I too am considering getting the new Galaxy Nexus on VZ. The battery issue I find secondary to my main concern, but it should be obvious that using only one radio (LTE) will have power saving benefits vs two radios. If just using voice, it may be a net loss of battery life. I guess we'll see how LTE stacks up to CDMA power consumption.
But here is the important question: will the SGN be upgradeable to support VoLTE (Voice over LTE) and the accompanying high-definition audio codec AMR-WB. You see, your horrible-sounding cell calls will transform to sounding better than a land line (assuming, of course, a compatible phone on the other end). It is even conceivable one could call VoIP landlines that support this codec and get good audio quality.
So you see, it is really all about the audio quality. Battery life is secondary, and may go up or down depending on your useage of voice only or voice and data.
Click to expand...
Click to collapse
If the wideband voice codec is implemented in hardware, then sure it can be a software upgrade. Otherwise its up to the CPU to do all the processing which isn't ideal. Still could be done though, just not in an optimal fashion.
the downsides outweigh the very small benefits. yeah, just using a lte antenna and turning off cdma will net you a small gain, but having lte on 24/7 will burn through the battery quickly and using it for voice just to gain a little clarity will still burn through the battery, just now you're using more power compared to cdma voice. nice try though.
pukemon said:
the downsides outweigh the very small benefits. yeah,
Click to expand...
Click to collapse
Then get a CDMA phone and keep having your phone conversations in low-def. Each to their own.
Personally, I absolutely despise cellphone audio quality (what? What did you say?) and will gladly burn a few extra milliamps, if indeed there is much of a penalty, for the few minutes I am actually talking on the phone.
---------- Post added at 04:41 PM ---------- Previous post was at 04:37 PM ----------
aadvanced1 said:
If the wideband voice codec is implemented in hardware, then sure it can be a software upgrade. Otherwise its up to the CPU to do all the processing which isn't ideal. Still could be done though, just not in an optimal fashion.
Click to expand...
Click to collapse
My understanding is that the voice codec must be in the modem firmware. Supposedly, from what I have read on the internet, the SGN uses the same SGS Thomson modem as the Samsung Galaxy II, which is capable of VoLTE. Again, reading on the internet, VZ has specifically asked Samsung (this was noted in the FCC filing) to ship it without VoLTE, presumably for better compatibility with their network today.
So, the million dollar question is: Is this just a firmware upgrade to enable when VoLTE goes live on VZ? Pretty sure modem firmware is different from Android OS. Not sure if it is upgradeable after the fact. Is this what is commonly refered to as "baseband firmware"?
Does anybody know more about the guts of these phones?
pass. i'll stick to gsm for a while longer. much longer. much better on the battery, call quality is satisfactory and i can travel with it. when lte power consumption is comparable to that of current hspa/cdma radios i might consider switching. until then i'm going to try and make my nexus last a couple years.
[email protected] said:
Then get a CDMA phone and keep having your phone conversations in low-def. Each to their own.
Personally, I absolutely despise cellphone audio quality (what? What did you say?) and will gladly burn a few extra milliamps, if indeed there is much of a penalty, for the few minutes I am actually talking on the phone.
Click to expand...
Click to collapse
Totally agreed. Going from a cell conversation to a Skype to Skype call makes you realize how undescribably bad cell voice quality is.
here's the million dollar question: With voLTE, can I simultaneously use voice and data over 4g?
Pacifik said:
Verizon has a Voice over LTE system coming out in the next year(according to them). That would allow the LTE radio to not just be used for sweet delicious data, but be used for voice(minutes?) too. Is this something that the current Galaxy Nexus will be capable of in the future via firmware update? This would solve some of the battery draining problems related to using a LTE phone. It would suck burro pene having a relatively new LTE phone and not be able to use Verizon's forthcoming VoLTE platform in a few months, if there is a huge benefit from it.
Click to expand...
Click to collapse
It's a really good question. If I had to bet, I'd say yes. I'd bet they've got Samsung putting the codec into the modem firmware already. I'd bet their 4G device testing already includes VoLTE IMS along with one or two production test markets for VZW field testing. I think the odds are good. That said, they don't exactly advertise on the box:
"Supports VoLTE so in about 9 months your battery life won't completely suck and maybe you'll get HD audio if you're seriously lucky."
Samzebian said:
here's the million dollar question: With voLTE, can I simultaneously use voice and data over 4g?
Click to expand...
Click to collapse
Yes. You should be able to do this even without VoLTE using 3G voice and 4G data. Different radios.
Samzebian said:
here's the million dollar question: With voLTE, can I simultaneously use voice and data over 4g?
Click to expand...
Click to collapse
Voice over LTE treats the call as data, it's the same thing as a voip call essentially.
I don't know when this happened, but on Verizon you can be on the phone and use data at the same time. At&t has nothing on Verizon now.
Sent from my Galaxy Nexus using XDA App
It's 4G voice goes over 3G and data over 4G
EKnofsky said:
It's 4G voice goes over 3G and data over 4G
Click to expand...
Click to collapse
How long have we had these capabilities? This opens a few more doors for me.
Sent from my Galaxy Nexus using XDA App
You can do this on the Thunderbolt in 3G only areas too. I think because HTC used 2 radios or somesuch. The Nexus can not do Data/voice in 3G only areas.
piperat said:
I don't know when this happened, but on Verizon you can be on the phone and use data at the same time. At&t has nothing on Verizon now.
Click to expand...
Click to collapse
4G gives data, 3G does voice. You can do this and its been a feature since the start.
kenyu73 said:
You can do this on the Thunderbolt in 3G only areas too. I think because HTC used 2 radios or somesuch. The Nexus can not do Data/voice in 3G only areas.
Click to expand...
Click to collapse
True. The Thunderbolt has a special radio that does simultaneous voice/data on 3G.
piperat said:
I don't know when this happened, but on Verizon you can be on the phone and use data at the same time. At&t has nothing on Verizon now.
Click to expand...
Click to collapse
Verizon 4G devices still have to use 3G for voice at least until VoLTE is switched on next year. Having two radios always on is part of the reason why the Verizon version has such horrible battery life.
ianwood said:
Verizon 4G devices still have to use 3G for voice at least until VoLTE is switched on next year. Having two radios always on is part of the reason why the Verizon version has such horrible battery life.
Click to expand...
Click to collapse
I hope when 3G is turned off that simultaneous voice/data isnt lost!!
I think there is alot more to it then having two radios on. Isn't 1x a radio? I've never followed radio technology so I really dont know all the details, but I'm pretty sure the 4G radio itself can do voice/data as well as support 3G and 1x as well. I dont think every 4G handset contains both 3G and 4G chips. I may be wrong, but it seems a bit of wasted space!
kenyu73 said:
I hope when 3G is turned off that simultaneous voice/data isnt lost!!
I think there is alot more to it then having two radios on. Isn't 1x a radio? I've never followed radio technology so I really dont know all the details, but I'm pretty sure the 4G radio itself can do voice/data as well as support 3G and 1x as well. I dont think every 4G handset contains both 3G and 4G chips. I may be wrong, but it seems a bit of wasted space!
Click to expand...
Click to collapse
3g for vzw isnt getting shut off for sometime (i think like 2014). its verizons major voice backbone.
1x uses the same chip as 3g and every LTE handset has 2 radios.
kenyu73 said:
I hope when 3G is turned off that simultaneous voice/data isnt lost!!
Click to expand...
Click to collapse
You won't lose it. Voice is treated like just another data type in LTE which means VoLTE inherently supports concurrent voice/data.
Zepius said:
3g for vzw isnt getting shut off for sometime (i think like 2014). its verizons major voice backbone.
1x uses the same chip as 3g and every LTE handset has 2 radios.
Click to expand...
Click to collapse
It's about having radios on at the same time. LTE/UMTS/GSM does not run 2 radios simultaneously and supports seamless in-session handovers including the signaling of mobile terminated calls (LTE release 9). It is almost effectively the same as concurrent voice and data in UMTS/GSM. In LTE/CDMA you run both radios concurrently unless you turn LTE off.
sent from my tired mind
No CDMA device transmits data and cellular at the same time.
063_XOBX said:
No CDMA device transmits data and cellular at the same time.
Click to expand...
Click to collapse
I believe it is LTE devices that will not lose data. CDMA only devices WILL lose data when on a phone call. Am I incorrect?
Do I need to have my intentional misinformation detector sent in for service?
WiredPirate said:
I believe it is LTE devices that will not lose data. CDMA only devices WILL lose data when on a phone call. Am I incorrect?
Do I need to have my intentional misinformation detector sent in for service?
Click to expand...
Click to collapse
The technology in LTE networks doesn't handle voice transmissions it only does data. So when you place a phone call on LTE it’s actually rolling back to the carrier’s older network to use CDMA tech to make the call.
I'm on Verizon and I can do both at the same time. I just tested it.
Well I believe you answered my question about this particular device but just to be clear both my Evo 4G and my evo 4G LTE would maintain data connection while I was talking on the phone not in an LTE area
sent from my tired mind
firecaulk said:
Well I believe you answered my question about this particular device but just to be clear both my Evo 4G and my evo 4G LTE would maintain data connection while I was talking on the phone not in an LTE area
sent from my tired mind
Click to expand...
Click to collapse
No they didn't. You were either on Wifi or they in fact did lose their data. None of the CDMA data+voice protocols are enacted by any US carrier.
firecaulk said:
Well I believe you answered my question about this particular device but just to be clear both my Evo 4G and my evo 4G LTE would maintain data connection while I was talking on the phone not in an LTE area
sent from my tired mind
Click to expand...
Click to collapse
So you are on Sprint? It all depends on the carrier too, I believe. If I remember right, AT&T used to be the only one that could do that that I knew of. I switched to Verizon and realized they didn't have that capability. Then LTE came out and gave that feature to them. I dont know about any other carriers though.
Again let me explain there has been many times I have been using my phone as a hotspot device to watch movies on my ps3 and I would receive a phone call in the middle of the movie I would accept the phone call and keep watching the movie without a problem. There is no LTE in my area of Western Kentucky I am on Sprint with an exceptionally fast 3G connection , I was surprised to find that this device does not have the same capabilities
sent from my tired mind
firecaulk said:
Again let me explain there has been many times I have been using my phone as a hotspot device to watch movies on my ps3 and I would receive a phone call in the middle of the movie I would accept the phone call and keep watching the movie without a problem. There is no LTE in my area of Western Kentucky I am on Sprint with an exceptionally fast 3G connection , I was surprised to find that this device does not have the same capabilities
sent from my tired mind
Click to expand...
Click to collapse
If you used the Evo 4G it may have been connected to data via 4G, which is not the same as LTE. You can do the same with LTE being connected and voice calls. However it can't be done with 3g and voice as they use the same radio and like the above post says no US carriers have that technology. The only reason 4G and LTE works is becase they are data only on seperate radios. Of course it could have been magic.
G-Nexus Sent
firecaulk said:
Again let me explain there has been many times I have been using my phone as a hotspot device to watch movies on my ps3 and I would receive a phone call in the middle of the movie I would accept the phone call and keep watching the movie without a problem. There is no LTE in my area of Western Kentucky I am on Sprint with an exceptionally fast 3G connection , I was surprised to find that this device does not have the same capabilities
sent from my tired mind
Click to expand...
Click to collapse
Well I dont know then. All I know is that my Verizon Galaxy Nexus does both internet and calls at the same time with no issues.
I am posting this during an active call, with no 4g connection
Sent from my EVO using xda app-developers app
I'm just wondering why any download I'm attempting to make will stop whenever I receive a phone call with my Galaxy Nexus?
Sent from my EVO using xda app-developers app
firecaulk said:
I'm just wondering why any download I'm attempting to make will stop whenever I receive a phone call with my Galaxy Nexus?
Click to expand...
Click to collapse
Its not a difficult concept. Your data connection is being cut off because you're on a phone call. You might manage to post (something that can be done on even the slowest weakest connection) but something as intensive as downloading is always going to be interrupted.
063_XOBX is mostly correct.
the CDMA GN has a CDMA radio and a LTE radio. if you are not on LTE and you get a phone call, your data will shut off.
most HTC phones (esp the EVO) have a radio chip which allows data and voice at the same time as there are 2 CDMA radios in the phone.
Zepius said:
063_XOBX is mostly correct.
the CDMA GN has a CDMA radio and a LTE radio. if you are not on LTE and you get a phone call, your data will shut off.
most HTC phones (esp the EVO) have a radio chip which allows data and voice at the same time as there are 2 CDMA radios in the phone.
Click to expand...
Click to collapse
Thank you for your reply, I really love XDA community I knew I could count on somebody for the answer
sent from my tired mind
063_XOBX said:
No they didn't. You were either on Wifi or they in fact did lose their data. None of the CDMA data+voice protocols are enacted by any US carrier.
Click to expand...
Click to collapse
SVDO, while not officially supported, is alive and well. The Thunderbolt, Rezound, Incredible 4G, Viper, and Galaxy S3 on VZW are a handful of phones that are capable of simultaneous voice and 3G data.
Sent from my Nexus 7 using Tapatalk HD
063_XOBX said:
The technology in LTE networks doesn't handle voice transmissions it only does data. So when you place a phone call on LTE it’s actually rolling back to the carrier’s older network to use CDMA tech to make the call.
Click to expand...
Click to collapse
No, VoLTE is not yet available, hopefully soon. That is not what I was saying. LTE handles data during a call, and CDMA handles the voice. If you are not on LTE or WiFi, there will be no data while on the call.
063_XOBX said:
You were either on Wifi or they in fact did lose their data. None of the CDMA data+voice protocols are enacted by any US carrier.
Click to expand...
Click to collapse
You are correct if only taking about CDMA. Cant say for any other carrier, but 100% with VZW you can do simultaneous data/voice if you are in LTE coverage.
Zepius said:
063_XOBX is mostly correct.
the CDMA GN has a CDMA radio and a LTE radio. if you are not on LTE and you get a phone call, your data will shut off.
most HTC phones (esp the EVO) have a radio chip which allows data and voice at the same time as there are 2 CDMA radios in the phone.
Click to expand...
Click to collapse
THIS.
najaboy said:
SVDO,
Click to expand...
Click to collapse
thats the term i was looking for. thanks
Zepius said:
063_XOBX is mostly correct.
the CDMA GN has a CDMA radio and a LTE radio. if you are not on LTE and you get a phone call, your data will shut off.
most HTC phones (esp the EVO) have a radio chip which allows data and voice at the same time as there are 2 CDMA radios in the phone.
Click to expand...
Click to collapse
WiredPirate said:
No, VoLTE is not yet available, hopefully soon. That is not what I was saying. LTE handles data during a call, and CDMA handles the voice. If you are not on LTE or WiFi, there will be no data while on the call.
You are correct if only taking about CDMA. Cant say for any other carrier, but 100% with VZW you can do simultaneous data/voice if you are in LTE coverage.
THIS.
Click to expand...
Click to collapse
To correct something I saw on this thread (and to complement previous commentaries):
- LTE is considered to be a 4G technology
In March 2008, the International Telecommunications Union-Radio communications sector (ITU-R) specified a set of requirements for 4G standards, named the International Mobile Telecommunications Advanced (IMT-Advanced) specification, setting peak speed requirements for 4G service at 100 megabits per second (Mbit/s) for high mobility communication (such as from trains and cars) and 1 gigabit per second (Gbit/s) for low mobility communication (such as pedestrians and stationary users).[1]
Since the first-release versions of Mobile WiMAX and LTE support much less than 1 Gbit/s peak bit rate, they are not fully IMT-Advanced compliant, but are often branded 4G by service providers. On December 6, 2010, ITU-R recognized that these two technologies, as well as other beyond-3G technologies that do not fulfill the IMT-Advanced requirements, could nevertheless be considered "4G", provided they represent forerunners to IMT-Advanced compliant versions and "a substantial level of improvement in performance and capabilities with respect to the initial third generation systems now deployed".
Click to expand...
Click to collapse
- UMTS handles voice with a data call active at the same time.
Sent from my Nexus
So whenever I'm in a call on my T-Mobile Note II, it drops LTE and drops to HSPA, is there any reason for this? I was under the assumption that the Note II can do SVLTE
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2
Normal
Sent from my SGH-T889 using Tapatalk 2
janjannsen99 said:
Normal
Sent from my SGH-T889 using Tapatalk 2
Click to expand...
Click to collapse
The T-Mobile note II doesn't have its own dedicated LTE antenna like basic sy every other phone besides the iPhone 5? Why did Samsung choose to make the Note II like this and why cant I find anything on the internet about it? Seems this should be as easy to find out as the I phone's flaw with LTE. But again, why did Samsung choose to make it this way? Especially when ALL of their other LTE phones support SVLTE?
Oh, and what's your source? I'd like to read up on this not-so-publicised flaw.
You do realize every other LTE device right now drops to either HSPA or CDMA while utilizing voice functions? I have had many, many LTE devices and can verify this.
Sent from my SGH-T889 using xda premium
id10terrordfw said:
You do realize every other LTE device right now drops to either HSPA or CDMA while utilizing voice functions? I have had many, many LTE devices and can verify this.
Sent from my SGH-T889 using xda premium
Click to expand...
Click to collapse
My Verizon Galaxy Nexus, DROID RAZR M, HTC Rezound and, HTC Thunderbolt, all did SVLTE. The iPhone 5 is the only device where the internet made it well known that it is incapable of doing SVLTE because the vast majority of devices devices are capable of it. I mean, if most weren't, then no one would've made a big deal about the iPhone 5 not doing it. Cause that would be hypocritical.
Dr. Hax said:
My Verizon Galaxy Nexus, DROID RAZR M, HTC Rezound and, HTC Thunderbolt, all did SVLTE. The iPhone 5 is the only device where the internet made it well known that it is incapable of doing SVLTE because the vast majority of devices devices are capable of it. I mean, if most weren't, then no one would've made a big deal about the iPhone 5 not doing it. Cause that would be hypocritical.
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Click to collapse
Seeing how Verizon does not have voice over LTE, and as far as I know, no one does since the only way to implement it is extremely costly right now, i highly doubt you had voice over LTE. Your Verizon phones used voice over cdma, and data over LTE, allowing both at the same time. This is why LTE sucks your battery dry on Verizon. It is running two radios at once. Since LTE is an evolution of gsm there is no need for two radios and so you see better battery life at a loss of LTE data while in call.
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_Dennis_ said:
Seeing how Verizon does not have voice over LTE, and as far as I know, no one does since the only way to implement it is extremely costly right now, i highly doubt you had voice over LTE. Your Verizon phones used voice over cdma, and data over LTE, allowing both at the same time. This is why LTE sucks your battery dry on Verizon. It is running two radios at once. Since LTE is an evolution of gsm there is no need for two radios and so you see better battery life at a loss of LTE data while in call.
Sent from my SGH-T889 using Tapatalk 2
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Click to collapse
I said SVLTE, not VOLTE. SVLTE is Simultaneous Voice + LTE while VoLTE is Voice-over LTE.
And on GSM phones that have LTE, they run 2 radios as well. One for LTE or HSPA and one for GSM. As you said, no one is using VoLTE yet. And our GSM/LTE phones need to maintain a connection to GSM even when connected to LTE so that we can still make calls and send/recieve texts.
Theres your proof bud. Just because it isnt what you want to hear doesnt mean its not the reality of the situation.
Sent from my SGH-T889 using Tapatalk 2
Dr. Hax said:
I said SVLTE, not VOLTE. SVLTE is Simultaneous Voice + LTE while VoLTE is Voice-over LTE.
And on GSM phones that have LTE, they run 2 radios as well. One for LTE or HSPA and one for GSM. As you said, no one is using VoLTE yet. And our GSM/LTE phones need to maintain a connection to GSM even when connected to LTE so that we can still make calls and send/recieve texts.
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Click to collapse
Okay to be honest I'm not 100% sure about the number of radios, fairly certain (~75%) only one radio is needed (the 7105 based note 2s have 2 radios, the dormant SoC radio and the GSM/HSPA/LTE radio). I do know you don't drop to GSM for calls, you drop to UMTS otherwise known as WCDMA and can hand off to GSM if needed.
There are plenty of areas with no GSM coverage but have UMTS/HSPA coverage. All these radios are evolutions of GSM and can have VoWHATEVER just no one has done VoLTE or VoHSPA, except T-Mobile has rolled out VoHSPA since the beginning of this year).
This is why your battery will take a hit on HSPA or LTE but not nearly as much as on a CDMA phone.
You are right in that most applications (barring tmobile now) use circuit switched GSM/UMTS for voice, not packet switched UMTS/HSPA/LTE.
Sent from my SGH-T889 using Tapatalk 2
_Dennis_ said:
Okay to be honest I'm not 100% sure about the number of radios, fairly certain (~75%) only one radio is needed (the 7105 based note 2s have 2 radios, the dormant SoC radio and the GSM/HSPA/LTE radio). I do know you don't drop to GSM for calls, you drop to UMTS otherwise known as WCDMA and can hand off to GSM if needed.
There are plenty of areas with no GSM coverage but have UMTS/HSPA coverage. All these radios are evolutions of GSM and can have VoWHATEVER just no one has done VoLTE or VoHSPA, except T-Mobile has rolled out VoHSPA since the beginning of this year).
This is why your battery will take a hit on HSPA or LTE but not nearly as much as on a CDMA phone.
You are right in that most applications (barring tmobile now) use circuit switched GSM/UMTS for voice, not packet switched UMTS/HSPA/LTE.
Sent from my SGH-T889 using Tapatalk 2
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Click to collapse
Oh I can tell my battery takes a hit on LTE! Much more than when I was on Verizon! I just attributed it to the weak signal though.
But you're saying most LTE/GSM phones fall back to HSPA if they were on LTE? I didn't know that. Please excuse my ignorance
When I got my Nexus 5 back in 2013 I noticed that if I was on LTE and made/received a call the data would switch to H and then switch back to LTE after the call was ended. My Nexus 5X does the same thing. What's the deal? Before I had the Nexus 5 I had a Galaxy SII Skyrocket(the LTE version of the Galaxy SII from AT&T) and that phone would stay on LTE during calls and that was from an early LTE phone (the first AT&T offered). I would expect the same from a current phone in 2015.
jimv1983 said:
When I got my Nexus 5 back in 2013 I noticed that if I was on LTE and made/received a call the data would switch to H and then switch back to LTE after the call was ended. My Nexus 5X does the same thing. What's the deal? Before I had the Nexus 5 I had a Galaxy SII Skyrocket(the LTE version of the Galaxy SII from AT&T) and that phone would stay on LTE during calls and that was from an early LTE phone (the first AT&T offered). I would expect the same from a current phone in 2015.
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Click to collapse
I am using Nexus 5X with T-Mobile and phone stays on LTE during call. There is a settings in: settings>more>cellular networks - Enhanced 4G LTE Mode ON/OFF switch. Do you have that?
Charkatak said:
I am using Nexus 5X with T-Mobile and phone stays on LTE during call. There is a settings in: settings>more>cellular networks - Enhanced 4G LTE Mode ON/OFF switch. Do you have that?
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Click to collapse
Nope. I don't have that option. I'm on AT&T. That's really strange that you Nexus 5X has that and mine doesn't. Kind of strange that yours has software differences. Did you buy your phone directly from Google?
jimv1983 said:
Nope. I don't have that option. I'm on AT&T. That's really strange that you Nexus 5X has that and mine doesn't. Kind of strange that yours has software differences. Did you buy your phone directly from Google?
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Click to collapse
Phone is directly from google and this is the current build #MDB08L. If you have anyone with T-Mobile sim, try it.
Dial *#*#4636#*#*, then tap "phone info", scroll to the bottom and check for "VOLTE PROVISIONED FLAG" - if it is on, then you will see OFF in from of VOLTE...
Charkatak said:
Phone is directly from google and this is the current build #MDB08L. If you have anyone with T-Mobile sim, try it.
Dial *#*#4636#*#*, then tap "phone info", scroll to the bottom and check for "VOLTE PROVISIONED FLAG" - if it is on, then you will see OFF in from of VOLTE...
Click to expand...
Click to collapse
It currently says "TURN OFF VOLTE PROVISIONED FLAG" so I'm guessing it's currently on. However I'm not sure what this has to do with anything. VoLTE means "voice over LTE". I'm not even trying to do voice over LTE. I'm just trying to use LTE for regular data while on a call over regular GSM.
jimv1983 said:
It currently says "TURN OFF VOLTE PROVISIONED FLAG" so I'm guessing it's currently on. However I'm not sure what this has to do with anything. VoLTE means "voice over LTE". I'm not even trying to do voice over LTE. I'm just trying to use LTE for regular data while on a call over regular GSM.
Click to expand...
Click to collapse
That is exactly the case if you want to stay on LTE while on a call, then it is called VoLTE(Voice over LTE). Your setting for that seems to be on...
Things to try, unless Nexus 5X on AT&T is unable to do VoLTE, ask AT&T.
Test with T-Mobile sim
Check APN settings
Check to see if your sim card is old
Charkatak said:
That is exactly the case if you want to stay on LTE while on a call, then it is called VoLTE(Voice over LTE). Your setting for that seems to be on...
Things to try, unless Nexus 5X on AT&T is unable to do VoLTE, ask AT&T.
Test with T-Mobile sim
Check APN settings
Check to see if your sim card is old
Click to expand...
Click to collapse
Everything I've seen says that VoLTE means that the LTE data connection is used to actually make phone calls instead of the traditional cell voice network(GSM/CDMA). I don't care about that. I'm fine with regular phone calls using the regular GSM voice connection. I just want to be able to use the LTE connection for things like browsing while I'm on a regular phone call.
Good to know that it isn't an issue with the phone. I guess it might be an AT&T network issue but that would be strange since it worked with my old Galaxy S II Skyrocket that I bought in 2011. Maybe a compatibility issue between AT&T and this phone? I'll see if I can test with someones T-Mobile SIM. My SIM card is only a month old since I had to get a Nano SIM when switching from my Nexus 5(which took a Micro SIM).
The only way you will be able to use LTE to browse the internet while on a call is if you are placing the call using VoLTE. Before VoLTE (and currently if you don't have it) your phone will always drop to a non LTE connection.
I'm sorry but that's just the way it has been and the way it is. Every device that doesn't use VoLTE will change to a different non LTE signal to place the call.
AFAIK, VoLTE on our device does not seem to be supported on the "gsm" carriers.. Yet.
Maybe try out the Network app? It allows you to specify a network preference and do a bit of fine-tuning.
jimv1983 said:
When I got my Nexus 5 back in 2013 I noticed that if I was on LTE and made/received a call the data would switch to H and then switch back to LTE after the call was ended. My Nexus 5X does the same thing. What's the deal? Before I had the Nexus 5 I had a Galaxy SII Skyrocket(the LTE version of the Galaxy SII from AT&T) and that phone would stay on LTE during calls and that was from an early LTE phone (the first AT&T offered). I would expect the same from a current phone in 2015.
Click to expand...
Click to collapse
I am on Tmobile and sometimes it does the same thing. I have to switch network preference to 2G then make a call hang up switch back to 4G then turn on the VOLTE option.
Sent from my Nexus 5X using Tapatalk
k.s.deviate said:
The only way you will be able to use LTE to browse the internet while on a call is if you are placing the call using VoLTE. Before VoLTE (and currently if you don't have it) your phone will always drop to a non LTE connection.
I'm sorry but that's just the way it has been and the way it is. Every device that doesn't use VoLTE will change to a different non LTE signal to place the call.
AFAIK, VoLTE on our device does not seem to be supported on the "gsm" carriers.. Yet.
Click to expand...
Click to collapse
That might be the case with the Nexus 5 and Nexus 5X but it was absolutely not the case with my old Galaxy SII Skyrocket. Kind of strange that the Nexus 5 and Nexus 5X have this issue. Seems kind of strange to me that the LTE radio would have to be turned off just because you are making a non-VoLTE call.
jimv1983 said:
That might be the case with the Nexus 5 and Nexus 5X but it was absolutely not the case with my old Galaxy SII Skyrocket. Kind of strange that the Nexus 5 and Nexus 5X have this issue. Seems kind of strange to me that the LTE radio would have to be turned off just because you are making a non-VoLTE call.
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Click to collapse
This is the case with all devices that are not using the VoLTE service.
There is no other way, unless of course you are using a VoIP service or hangouts to place your calls.
GreenDroidX said:
I am on Tmobile and sometimes it does the same thing. I have to switch network preference to 2G then make a call hang up switch back to 4G then turn on the VOLTE option.
Sent from my Nexus 5X using Tapatalk
Click to expand...
Click to collapse
Have not had issues with VoLTE on Nexus 5X using T-Mobile.
k.s.deviate said:
This is the case with all devices that are not using the VoLTE service.
There is no other way, unless of course you are using a VoIP service or hangouts to place your calls.
Click to expand...
Click to collapse
I didn't realize VoLTE was a feature of phones in 2011. I'm wondering if maybe AT&T stopped supporting it on its network? Oh well, thanks for the info. I didn't realize a phone had to be able to make calls over LTE to be able to use LTE data while on a call. It's also surprising considering how Verizon does simultaneous voice and data. Once Verizon started supporting LTE phones(several years ago) you could do simultaneous voice and data but it wasn't(at least at that time) using LTE for voice calls. Just for data while a CDMA call was active. I guess it works differently for GSM?
Charkatak said:
Have not had issues with VoLTE on Nexus 5X using T-Mobile.
Click to expand...
Click to collapse
Just to clarify, I'm not trying to make a voice call using LTE(which is what "Voice over LTE" means). Just trying to use LTE data while on a non-LTE voice call.
jimv1983 said:
I didn't realize VoLTE was a feature of phones in 2011. I'm wondering if maybe AT&T stopped supporting it on its network? Oh well, thanks for the info. I didn't realize a phone had to be able to make calls over LTE to be able to use LTE data while on a call. It's also surprising considering how Verizon does simultaneous voice and data. Once Verizon started supporting LTE phones(several years ago) you could do simultaneous voice and data but it wasn't(at least at that time) using LTE for voice calls. Just for data while a CDMA call was active. I guess it works differently for GSM?
Just to clarify, I'm not trying to make a voice call using LTE(which is what "Voice over LTE" means). Just trying to use LTE data while on a non-LTE voice call.
Click to expand...
Click to collapse
In any case in order to stay on LTE and use data, your phone has to support VoLTE, because normal LTE is data only and when you make a call it would drop to 3 or 4G. CDMA and GSM are 2 different type of networks. I was always using GSM providers(T-Mobile in my case) and this is how it works. I don't know how your old phone could let you be on LTE during a call - unless AT&T was using some proprietary service.
Charkatak said:
...because normal LTE is data only...
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Click to collapse
That totally makes sense. I'm fine with that.
Charkatak said:
....and when you make a call it would drop to 3 or 4G.
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Click to collapse
Thats weird.
Charkatak said:
...I don't know how your old phone could let you be on LTE during a call - unless AT&T was using some proprietary service.
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Click to collapse
Yeah, if that's how LTE data works then AT&T must have had something special.
jimv1983 said:
Yeah, if that's how LTE data works then AT&T must have had something special.
Click to expand...
Click to collapse
Early on, phones had a separate 3G radio from their LTE radio. This is a big part of why the first LTE phones had substantial battery drain issues compared to 3G only phones at the same time. One of the nice things about the setup was that you could use 3G for voice and LTE for data simultaneously. With the move to integrated modems, which significantly improved battery life and speed, that feature was lost. Until AT&T implements a standard for VOLTE like T-Mobile has you're going to have to deal with the lower speeds while on a call.
raptir said:
Early on, phones had a separate 3G radio from their LTE radio. This is a big part of why the first LTE phones had substantial battery drain issues compared to 3G only phones at the same time. One of the nice things about the setup was that you could use 3G for voice and LTE for data simultaneously. With the move to integrated modems, which significantly improved battery life and speed, that feature was lost. Until AT&T implements a standard for VOLTE like T-Mobile has you're going to have to deal with the lower speeds while on a call.
Click to expand...
Click to collapse
OK that explains it. The Galaxy S2 Skyrocket was the first AT&T LTE phone so it probably had separate radios. I'm also kind of concerned with what VoLTE will do to battery life. I remember that one of the ways phone matters were reducing battery drain was to keep the radio asleep unless it was asleep. With VoLTE the LTE radio would have to be active all the time. Has the energy efficiency of newer LTE radios made that a non-issue? How is battery life on T-Mobile vs AT&T using the same phone under similar conditions?