Related
I just noticed yesterday that T-mobile has a 4G network in my area and I was wondering if there was a way to force roam 4G on tmobiles network? So that I could pick up 4G.
If its possible how?
Oh and sprint needs to hurry up and put 4g everywhere
You said it yourself. T-Mobile is HSPA+, Sprint 4G is WiMax. So, no.
Naa dude. HSPA+ is not compatible with cdma(sprint). Matter of fact t-mobile is using 4G now because its "trendy" and everybody else is using it. Their network is closer to 3G in infrastructure. But thats up for debate.
That sucks like hell. There's 4G here I just can't have it. AHHHHHHH!!!
Well if its like 3G I guess I'm not missing much.
david279 said:
Naa dude. HSPA+ is not compatible with cdma(sprint). Matter of fact t-mobile is using 4G now because its "trendy" and everybody else is using it. Their network is closer to 3G in infrastructure. But thats up for debate.
Click to expand...
Click to collapse
You are on the money. HSPA+ is no more than an upgrade to existing 3G technology. If I remember right, it only has a theoretical max of 54 Mbps down. It is not, nor will it ever be, 4G.
Granted, the current 802.16e standard of WiMax is not 4G either...just waiting for that 802.16m standard to be finalized =). Which once that is complete, infrastructure can be updated and we should be able to utilize it with a simple firmware update.
Stalte said:
That sucks like hell. There's 4G here I just can't have it. AHHHHHHH!!!
Well if its like 3G I guess I'm not missing much.
Click to expand...
Click to collapse
No its way faster than your normal 3G. Faster than WIMAX too. Its nothing to pull down 7 or 8 Mb.
I bet it's better on battery than wimax is on ours.
Sent from my PC36100 using XDA App
overthinkingme said:
I bet it's better on battery than wimax is on ours.
Sent from my PC36100 using XDA App
Click to expand...
Click to collapse
It uses the same radio for voice. The EVO has a separate 4G radio thats has to be activated and scan then connect. So 2 radios running at the same time would use more battery than 1 GSM radio running. Also CDMA has a tendency to use more battery when searching for signal in low signal areas.
Having installed T-mobiles 3g upgrade here in Chicago market back in 2008, I can say definitively that HSPA is just a radio cabinet addition to the existing cellular framework. Depending on the layout of the tower/site, "Flex radios" handle the data on 1, or sometimes more antennae, while the voice travels over GSM through remaining antennae. Very similar to ATT infrastructure, but tiny radios handling big bandwidth.
Having said all that, 4G is a silly buzzword that Sprint started, and T-mobile is now exploiting.
In a way, Sprint is just using extra radios on top of their existing 3G cellular, and just integrating the enhanced data speeds of Clearwire's network into their own.
T-mobile's speeds are indeed fast both HSPA and HSPA+, but to call them 4g may be overstating it, as it is just an upgrade to their existing technology, and not a new technology.
As another poster stated, nobody officially has 4g yet, not even Sprint, and until the 802.16 commission finalizes and LTE is launched we still won't.
To re-emphasize to the OP, not a chance, and don't believe the hype.
I can see sprint(or clear) and T-mobile going to bed for some real 4G'ness.
david279 said:
I can see sprint(or clear) and T-mobile going to bed for some real 4G'ness.
Click to expand...
Click to collapse
Yeah, I heard a rumor that Sprint may eventually adopt LTE.... It makes sense.
Wimax will make a great backhaul, and could stay in place, not to mention supporting cities and rural areas. But LTE will be the big daddy, and similar to WiMax, works on it's own and should be seamlessly integrated on top of cellular.
I'm not sure but I think it can work with CDMA or GSM, hooray for global WiFi!
Mitch Matrixx said:
Yeah, I heard a rumor that Sprint may eventually adopt LTE.... It makes sense.
Wimax will make a great backhaul, and could stay in place, not to mention supporting cities and rural areas. But LTE will be the big daddy, and similar to WiMax, works on it's own and should be seamlessly integrated on top of cellular.
I'm not sure but I think it can work with CDMA or GSM, hooray for global WiFi!
Click to expand...
Click to collapse
I wouldn't count on LTE on Sprint just yet. Hesse denounced it last week; however, Sprint, Clearwire, Google, Time-Warner, and a couple others purchased Spectrum not only in the 2.5 GHz, but the 2.3 GHz band also. So the bandwidth is there and, in the past, Hesse has been quoted saying they can easily switch to LTE if need be.
Edit: http://gigaom.com/2010/10/29/sprint-ceo-dan-hesse-on-clearwire-lte-wimax/
topdawgn8 said:
I wouldn't count on LTE on Sprint just yet. Hesse denounced it last week; however, Sprint, Clearwire, Google, Time-Warner, and a couple others purchased Spectrum not only in the 2.5 GHz, but the 2.3 GHz band also. So the bandwidth is there and, in the past, Hesse has been quoted saying they can easily switch to LTE if need be.
Edit: http://gigaom.com/2010/10/29/sprint-ceo-dan-hesse-on-clearwire-lte-wimax/
Click to expand...
Click to collapse
Thanks for the info.
I think the most important thing in the article is that LTE can happen if necessary.
Sorry for getting off topic.
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.
Click to expand...
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.
Sent from my SGH-T889 using Tapatalk 2
_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
Click to expand...
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.
Click to expand...
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
Click to expand...
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
Hey guys, I asked awhile back about switching to ST and I've done it. I finally got data working by using a TMO SIM, but I can only get EDGE, no more, no less. Even in relatively large cities in my area that have TMO towers, I only get EDGE. My question is, is there anything I can do to get better data?
I have Verizon LG G4 on Straight Talk Verizon Towers and everything works great! Not sure what your issue is. Only issue I see is when I make a phone call, it drops to 1x always
photos.by.fako said:
I have Verizon LG G4 on Straight Talk Verizon Towers and everything works great! Not sure what your issue is. Only issue I see is when I make a phone call, it drops to 1x always
Click to expand...
Click to collapse
That's because you're not using Advanced Calling (VoLTE). On Verizon's network, calls always drop to 1X unless you're using Advanced Calling. In the past, most Verizon phones didn't indicate this. They would continue to show whatever data connection the phone had (3G, 4G) even though the call was being done over 1X. Several recent Verizon devices have been more honest about which networks are actually in use, including the G4.
So, what you're experiencing isn't an issue. It's what should be happening.
photos.by.fako said:
I have Verizon LG G4 on Straight Talk Verizon Towers and everything works great! Not sure what your issue is. Only issue I see is when I make a phone call, it drops to 1x always
Click to expand...
Click to collapse
That's because you're using a Verizon ST SIM, the OP is using a T-Mobile ST SIM. Also, you need to enable Advanced Calling on your account and your phone to use voice and data at the same time over LTE.
To the OP, I have the same problem. When I put my T-Mobile SIM in my VS986 I only get 2G at home, while LTE only works in the older LTE sites that are using band 4 primarily. Most 2G > LTE sites are using band 2, which according to the Verizon spec page this phone supports, but it must not be active as it doesn't work. I've been looking at ways to enable band 2 without any success yet.
To the OP, you added the APN configs for Straight Talk T-Mobile, correct?
Sent from my VS986 using Tapatalk
official.xian said:
Hey guys, I asked awhile back about switching to ST and I've done it. I finally got data working by using a TMO SIM, but I can only get EDGE, no more, no less. Even in relatively large cities in my area that have TMO towers, I only get EDGE. My question is, is there anything I can do to get better data?
Click to expand...
Click to collapse
I just opened a thread asking about VS986 wcdma bands availability. I was reading LG specs and they say this phone has no 3g, just 2g and LTE. Reading in many other web pages they say this phone has all 4 wcdma bands available. Maybe they are software locked?
I think, I made a mistake buying this phone to be used in a GSM network. Have you checked with Verizon/Tmo rep?
photos.by.fako said:
I have Verizon LG G4 on Straight Talk Verizon Towers and everything works great! Not sure what your issue is. Only issue I see is when I make a phone call, it drops to 1x always
Click to expand...
Click to collapse
What are your LTE speeds like? I thought about making the switch but then I read that Verizon limits LTE speeds on ST to 5MBPS...Is that true? As it is my 3g+ speeds end up being faster than that most of the time.
rick09 said:
What are your LTE speeds like? I thought about making the switch but then I read that Verizon limits LTE speeds on ST to 5MBPS...Is that true? As it is my 3g+ speeds end up being faster than that most of the time.
Click to expand...
Click to collapse
I'm getting better than 5Mbps, but definitely shaped/limited bandwidth. If you actually use 10Mbps+ regularly, keep shopping.
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.