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After digging through pages of posts about data speed issues and 2G vs. 3G vs. 4G/LTE, can someone with good expertise and knowledge summarize exactly what the phone supports and how it does it? I am seeing conflicting comments, so it is a little confusing. Also, please clarify a comment I recall seeing from at AT&T person that that the Vivid has one radio that switches between LTE and HSPA+ rather than having as separate 3G radio as earlier LTE phones did.
Or point to a good tutorial.
Thanks
I'll see if I can help!
So in order from slowest to fastest, the GSM data technologies are:
2G:
-GSM
-EDGE
3G:
-UMTS
-HSPA
-HSPA+
4G:
-LTE
Most Android phones display these as G, E, 3G, H, & H+ (don't know what stock Android displays for LTE). The Vivid, however, displays G & E, then displays 4G for 3G, H & H+, then 4GLTE for LTE. So no matter what 3G network your on, it'll show 4G (because AT&T thinks H+ counts as 4G), then when you're on an actual 4G network, it'll show 4GLTE.
As for the single radio, yes, that's true. LTE is a GSM based technology, so a single radio can handle all of the above connections. This is different from Verizon, which uses CDMA for its 2G & 3G networks, then switched to LTE for its 4G network, necessitating two different radios: one for CDMA, one for LTE. AT&T, however, has been GSM from 2G on, so one radio can handle everything. This will most likely continue to be the way it works: Verizon (and eventually Sprint) phones will require two radios for two technologies, AT&T/T-Mo phones will only require one.
This leads to one consequence, however, concerning simultaneous data & voice. No LTE network currently implements voice communications, they're purely data. Even when they do implement it, it'll be VoIP based, so it'll just be more data (This will be called VoLTE for Voice over LTE). Therefore, since this isn't implemented yet, phones must revert to the 3G network to make voice calls. On Verizon, since they're two different radios, you can continue to use LTE data while using CDMA for voice. On AT&T, they're the same radio, so dropping down to 3G drops the LTE connection. You can still use simultaneous voice & data (as you can on just about any GSM based network), but you just don't get LTE speeds.
Make sense? Let me know if that helps!
Thanks, BJG222
That's what I wanted to know. I appreciate the info.
brucegil said:
That's what I wanted to know. I appreciate the info.
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No problem! Glad I could help!
bjg222 said:
I'll see if I can help!
So in order from slowest to fastest, the GSM data technologies are:
2G:
-GSM
-EDGE
3G:
-UMTS
-HSPA
-HSPA+
4G:
-LTE
Most Android phones display these as G, E, 3G, H, & H+ (don't know what stock Android displays for LTE). The Vivid, however, displays G & E, then displays 4G for 3G, H & H+, then 4GLTE for LTE. So no matter what 3G network your on, it'll show 4G (because AT&T thinks H+ counts as 4G), then when you're on an actual 4G network, it'll show 4GLTE.
As for the single radio, yes, that's true. LTE is a GSM based technology, so a single radio can handle all of the above connections. This is different from Verizon, which uses CDMA for its 2G & 3G networks, then switched to LTE for its 4G network, necessitating two different radios: one for CDMA, one for LTE. AT&T, however, has been GSM from 2G on, so one radio can handle everything. This will most likely continue to be the way it works: Verizon (and eventually Sprint) phones will require two radios for two technologies, AT&T/T-Mo phones will only require one.
This leads to one consequence, however, concerning simultaneous data & voice. No LTE network currently implements voice communications, they're purely data. Even when they do implement it, it'll be VoIP based, so it'll just be more data (This will be called VoLTE for Voice over LTE). Therefore, since this isn't implemented yet, phones must revert to the 3G network to make voice calls. On Verizon, since they're two different radios, you can continue to use LTE data while using CDMA for voice. On AT&T, they're the same radio, so dropping down to 3G drops the LTE connection. You can still use simultaneous voice & data (as you can on just about any GSM based network), but you just don't get LTE speeds.
Make sense? Let me know if that helps!
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Wow thanks, a very helpful summary of so much **** otherwise kinda complicated to figure out.. quick question, under the Network menu, my phone always says HSDPA, not any of the other options you listed above. This means..?
Here is an interesting read...Explains alot, considering I bought my White Vivid in Houston and got amazing speeds on LTE, and can barely stay locked on an LTE signal at home here in the SW burbs of Chicago.
http://www.pcmag.com/article2/0,2817,2393286,00.asp#fbid=ruQf5IEExI0
Actually, HSPA+ is also categorized as 4G.
dizzyraider said:
Actually, HSPA+ is also categorized as 4G.
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Well, AT&T & T-Mobile claim this, but it's not really true. UMTS = 3G; HSPA was an upgrade to that, call it 3.5G; HSPA+ is an upgrade to HSPA that incorporates higher bandwidth behind the scenes, more of a 3.9G. LTE's actually a new protocol. Technically, by the initial ITU standards, that's not even 4G (LTE-Advanced, the next upgrade to that, is the only one that does), but they've since expanded the definition to include LTE, too.
so we don't get a different symbol for 3G...so how do we know when we are using 3G verses HSPA and HSPA+ ? (other than speed)...
sucks...
Apparently the droid turbo can't, which is amazing as far as I'm concerned, and unfortunately a deal breaker for me.
Someone please tell me this phone won't have the same problem?
Sent from my SCH-I545 using Tapatalk 2
On what carrier?
G3
Verizon
Sent from my SCH-I545 using Tapatalk 2
This will be fixed soon on all the new Verizon phones. Same with the Sony Z3v.
It depends on the network. ATT can data and call.
Verizon phones can. I have a note 4 and can make calls while browsing the web
---------- Post added at 01:58 PM ---------- Previous post was at 01:57 PM ----------
I'm not sure about all Verizon phones I guess. I just mean it's possible on their network right now
At first most likely not. Droid life did a video making a call while on Verizon and it dropped data as soon as it started calling and came back once finished.
Sent from my XT1060 using Tapatalk
Wow hopefully that is fixed with the upcoming update being pushed before release.
boynamedstacy said:
Wow hopefully that is fixed with the upcoming update being pushed before release.
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Its not something that is broke ....the oem are making these phones with only one path from modem .... either data or phone can use but not both. ..it's been that way since g2 on sprint ...you can use wifi and phone though
You can when vzw goes VoLTE since it will be using the same network type. This uses same antenna as I phone and other moto devices that do not support simultaneous voice and data
Does Sprint's Spark network support it?
I think Verizon has given the date for the update as mid December. At least for the Turbo, that's the case. Still somewhat mystifying why you would release three major "flagship" phones— Sony zv3, Droid Turbo and the Nexus 6— before your ducks are in a row with simultaneous calls and data.
Cheater912 said:
Does Sprint's Spark network support it?
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No sprint spark phone can do it .... g2 g3 note 4 s5 none of them
VoLTE
I'm confused. I thought the fact that voice was over CDMA is the reason why we can have simultaneous data and voice. Back before Verizon got LTE there was no simultaneous voice and data. Then once LTE came along, suddenly simultaneous voice and data worked (and has worked for me since). The way this was explained to me was that voice uses CMDA and data uses LTE (which is GSM) so they can coexist.
So I guess I'm confused about two things...
1.) Since simultaneous voice and data has been working for years now, what makes these new phones (Turbo & Nexus 6, specifically) any different. Why is this suddenly a concern again? It feels like 2012 all over again.
2.) Whatever the reason is that it supposedly does not work, why will VoLTE fix things? It seems to me that once we have VoLTE we'd have voice and data both trying to use the same pipe and have issues again, just like before LTE existed and we had only CMDA.
Perhaps someone can explain
demarcmj said:
I'm confused. I thought the fact that voice was over CDMA is the reason why we can have simultaneous data and voice. Back before Verizon got LTE there was no simultaneous voice and data. Then once LTE came along, suddenly simultaneous voice and data worked (and has worked for me since). The way this was explained to me was that voice uses CMDA and data uses LTE (which is GSM) so they can coexist.
So I guess I'm confused about two things...
1.) Since simultaneous voice and data has been working for years now, what makes these new phones (Turbo & Nexus 6, specifically) any different. Why is this suddenly a concern again? It feels like 2012 all over again.
2.) Whatever the reason is that it supposedly does not work, why will VoLTE fix things? It seems to me that once we have VoLTE we'd have voice and data both trying to use the same pipe and have issues again, just like before LTE existed and we had only CMDA.
Perhaps someone can explain
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1. some newer VZW phones dont have two radios (ie, one for CDMA voice and the other for CDMA or LTE data).
2. VoLTE with one radio has enough bandwith to simultaneously handle both voice and data. However, VoLTE has a much, much bigger problem as I see it:
http://www.verizonwireless.com/support/advanced-calling-faqs/
Will my call be handed off automatically when I move from the 3G network to the 4G LTE network and vice versa with Advanced Calling 1.0?
No, calls won t switch between 3G and 4G LTE networks. If your call starts on the 3G network and you move to a 4G LTE coverage area, your call will continue as a 3G/CDMA call. However, if your call starts on the 4G LTE network and you move to a non-4G coverage area, your call will drop.
I live in Houston....presumably a place with lots of LTE coverage. In reality, I am constantly switching between LTE and 3G. with VoLTE, I'll be dropping calls like crazy.
roadratx said:
1. some newer VZW phones dont have two radios (ie, one for CDMA voice and the other for CDMA or LTE data).
2. VoLTE with one radio has enough bandwith to simultaneously handle both voice and data. However, VoLTE has a much, much bigger problem as I see it:
http://www.verizonwireless.com/support/advanced-calling-faqs/
Will my call be handed off automatically when I move from the 3G network to the 4G LTE network and vice versa with Advanced Calling 1.0?
No, calls won t switch between 3G and 4G LTE networks. If your call starts on the 3G network and you move to a 4G LTE coverage area, your call will continue as a 3G/CDMA call. However, if your call starts on the 4G LTE network and you move to a non-4G coverage area, your call will drop.
I live in Houston....presumably a place with lots of LTE coverage. In reality, I am constantly switching between LTE and 3G. with VoLTE, I'll be dropping calls like crazy.
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I'm in Katy, travel all over Houston working. While T-Mobile has a very large LTE area down here, I do see the signals changing very often depending on part of town I'm in
Sent from my Nexus 5 using XDA Free mobile app
I've seen the news that simultaneous voice and data doesn't work on the N6 on Verizon out of the box. Curious what people think the chances are that it will work at some point without the need to root and unlock?
They have gone to using just one antenna as is the same for the Droid Turbo. VOLTE should be coming to the N6 in the near future.
Sent from my VS985 4G using Tapatalk
HankStorm said:
I've seen the news that simultaneous voice and data doesn't work on the N6 on Verizon out of the box. Curious what people think the chances are that it will work at some point without the need to root and unlock?
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Rooting/unlocking will have no impact on this. It, like all new Verizon devices, requires "Advance Calling 1.0" which Verizon hasn't pushed to any new devices at this point. Assuming Verizon supports the device then it will get the update at some point.
Assuming the phone is made available from Verizon directly I can see simultaneous voice and data being available. I should have been more clear about my question applying to phones bought from Google or Motorola directly.
akellar said:
Rooting/unlocking will have no impact on this. It, like all new Verizon devices, requires "Advance Calling 1.0" which Verizon hasn't pushed to any new devices at this point. Assuming Verizon supports the device then it will get the update at some point.
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Iphone 6 and 6 Plus has it. I just switched to Verizon from Tmo and got 3 devices, 2x iPhone 6+ and Droid Turbo. Now, Turbo I had to get as that line is for business, but it will be sold for a Nexus 6. Tmobile definitely had better voice quality and I was always iffy about going to a CDMA carrier as I used to work and knew a lot about CDMA for Sprint. However, fact that they pretty much have their entire network covered with LTE made me decide to try.
Point is, with Advanced Calling 1.0 you can definitely tell the voice quality difference and using LTE while being on the phone is nice, same way it was on T-Mobile... The fact that Droid Turbo doesn't have this and is one of the premier Verizon Devices saddens me...
air2k57 said:
Point is, with Advanced Calling 1.0 you can definitely tell the voice quality difference and using LTE while being on the phone is nice, same way it was on T-Mobile... The fact that Droid Turbo doesn't have this and is one of the premier Verizon Devices saddens me...
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do you happen to know if turning off the advanced calling 1.0 on the phone will disable the simultaneous voice/data?
i was reading some wiggy things (in verizon's faq, no less) about needing to turn off the adv calling if you're going to be bouncing between LTE & 3G or its going to to drop calls. but my partner makes a ton of calls during her (SF to sacramento) commute when she needs to have data to look at.
if its just the VoLTE you can turn off, that would be great; but if it's the whole package... well, that's going to be a problem.
I am very curious about how this will work in practice as well, to the point where I may not upgrade until volte has been live for a few weeks. I have grown used to just knowing voice and data works...I am worried volte isn't going to work very well.
I'm wondering what is going to work with an unlocked Nexus 6 on Verizon. 3G? XLTE? visual voice mail? my Verizon? Asurion insurance?
Sent from my Nexus 7 using XDA Free mobile app
bigyak22 said:
I'm wondering what is going to work with an unlocked Nexus 6 on Verizon. 3G? XLTE? visual voice mail? my Verizon? Asurion insurance?
Sent from my Nexus 7 using XDA Free mobile app
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Nexu6 has an XLTE chip?
williamentropy said:
do you happen to know if turning off the advanced calling 1.0 on the phone will disable the simultaneous voice/data?
i was reading some wiggy things (in verizon's faq, no less) about needing to turn off the adv calling if you're going to be bouncing between LTE & 3G or its going to to drop calls. but my partner makes a ton of calls during her (SF to sacramento) commute when she needs to have data to look at.
if its just the VoLTE you can turn off, that would be great; but if it's the whole package... well, that's going to be a problem.
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Hi, sorry for late reply. But yes, it will. I got an email from Verizon as well as text telling me how to enable it. And I do see a difference in voice quality when Data+Voice is enabled. It is done via Settings - Cellular and then switch it away from Data only. I drove out while on the phone last night and I managed to lose LTE signal, my call didn't disconnect. However, I did notice odd things with it still. One time my phone went to 1x while in my pocket in a good LTE coverage area. When I took it out and saw 1x I immediately got a Voice Mail notification... I never got a call though.
the only thing making me want to return my Nexus 6 is that I can't simultaneously use data and voice on Verizon.
air2k57 said:
Hi, sorry for late reply. But yes, it will. I got an email from Verizon as well as text telling me how to enable it. And I do see a difference in voice quality when Data+Voice is enabled. It is done via Settings - Cellular and then switch it away from Data only. I drove out while on the phone last night and I managed to lose LTE signal, my call didn't disconnect. However, I did notice odd things with it still. One time my phone went to 1x while in my pocket in a good LTE coverage area. When I took it out and saw 1x I immediately got a Voice Mail notification... I never got a call though.
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I'm on Verizon also but don't see that option. Can you please provide more details
roadratx said:
I'm on Verizon also but don't see that option. Can you please provide more details
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He has an iPhone 6 or 6+ which already supports Advanced Calling 1.0. The Nexus 6 doesn't. Yet at least.
Just for some clarity, Advanced Calling 1.0 and XLTE are Verizon marketing buzzwords for VoLTE and AWS respectively.
You can't do simultaneous voice and data on this device, or some other recent devices because there is only one antenna for both CDMA and LTE, while many previous devices had one for each.
Once you get Advanced Calling 1.0 on your account and device, the CDMA chip is not used and both voice and data go over LTE. Since VoLTE is just another type of transmitted data over LTE, it can do both.
Advanced Calling 1.0 on Verizon WILL drop if you leave LTE coverage as Verizon does not have any way to hand down from LTE to CDMA gracefully. This is different from TMobile and AT&T who can hand down to their HSPA networks. If you had a call going and it didn't drop when you lost LTE, it wasn't a VoLTE call in the first place. It's possible either the call started on 3G, the option wasn't enabled on your phone, or the option wasn't enabled on your account. I'm sorry if I sound patronizing, but Verizon's VoLTE is completely incapable of keeping a call going if you drop from LTE.
Finally, XLTE is just Verizon's term for the extra 10x10 or 20x20MHz of high frequency AWS spectrum they acquired. It's not a new type of LTE, but might as well be because the real world speeds are so much better than the normal low frequency 700MHz band of their original LTE, mostly due to fewer users, more bandwidth, and cleaner RF at the high frequency.
There's no XLTE "chip" as much as looking in the LTE band support and checking for band 4. 700MHz Verizon LTE is band 13, and they will soon start deploying more LTE on band 2. It's a matter of antenna tuning and modem support mostly.
JesusFreak316 said:
He has an iPhone 6 or 6+ which already supports Advanced Calling 1.0. The Nexus 6 doesn't. Yet at least.
Just for some clarity, Advanced Calling 1.0 and XLTE are Verizon marketing buzzwords for VoLTE and AWS respectively.
You can't do simultaneous voice and data on this device, or some other recent devices because there is only one antenna for both CDMA and LTE, while many previous devices had one for each.
Once you get Advanced Calling 1.0 on your account and device, the CDMA chip is not used and both voice and data go over LTE. Since VoLTE is just another type of transmitted data over LTE, it can do both.
Advanced Calling 1.0 on Verizon WILL drop if you leave LTE coverage as Verizon does not have any way to hand down from LTE to CDMA gracefully. This is different from TMobile and AT&T who can hand down to their HSPA networks. If you had a call going and it didn't drop when you lost LTE, it wasn't a VoLTE call in the first place. It's possible either the call started on 3G, the option wasn't enabled on your phone, or the option wasn't enabled on your account. I'm sorry if I sound patronizing, but Verizon's VoLTE is completely incapable of keeping a call going if you drop from LTE.
Finally, XLTE is just Verizon's term for the extra 10x10 or 20x20MHz of high frequency AWS spectrum they acquired. It's not a new type of LTE, but might as well be because the real world speeds are so much better than the normal low frequency 700MHz band of their original LTE, mostly due to fewer users, more bandwidth, and cleaner RF at the high frequency.
There's no XLTE "chip" as much as looking in the LTE band support and checking for band 4. 700MHz Verizon LTE is band 13, and they will soon start deploying more LTE on band 2. It's a matter of antenna tuning and modem support mostly.
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Exactly what he said. And trust me, it isn't as good as what T-Mobile uses.
Let me ask you this, do you think T-Mobile is overall a better network in Metro areas? I loved my service on T-Mobile... From fast data speeds to very clear voice, amazing! Switching to verizon was a nightmare. Even on VOLTE it isn't very clear, calls do drop and I am getting low speeds or regular 3g in places T-Mobile had LTE in Atlanta. I do know that rural coverage and indoor is better on Verizon, but my experience has been bad.
Any updates? Royally pisseddd I can't do voice n data like I can on my lg g3. Fill like I stepped back in time and att tmo mocking vzw all over again for no voice n data
Sent from my Nexus 6 using Xparent Cyan Tapatalk 2
moosc said:
Any updates? Royally pisseddd I can't do voice n data like I can on my lg g3. Fill like I stepped back in time and att tmo mocking vzw all over again for no voice n data
Sent from my Nexus 6 using Xparent Cyan Tapatalk 2
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We have had voice and data almost 2 weeks now. Update to version 5. 1. D, enable it on your phone and on Verizon. enjoy
Sent from my Google N6 on VZ
How to get Simultaneous Voice and Data to work on Nexus 6
After updating your Nexus 6 to Android 5.1, you will find a setting hidden inside a Phone Settings menu that allows you to enable VoLTE and then an “Enhanced 4G LTE Mode.” With both of these options toggled on, you can then make calls and “surf the web.” Glory!
In order to enable the setting on your phone, head into the dialer and type in *#*#4636#*#*. When you hit that last *, your phone will jump into the hidden settings menu. Choose “Phone info” and then scroll down until you see an option for “TURN ON VOLTE PROVISIONED FLAG.” Tap that and then reboot your phone (I had to reboot twice for some reason to get it to work). Once booted, head into your phone’s regular settings menu, tap on “More” under “Wireless & networks,” then “Cellular networks.” You should now see an option for “Enhanced 4G LTE Mode” and it should be toggled on.
Note: There is a chance that you may need HD Voice added to your Verizon account. To do that, you will need to sign-in to your Verizon account and add the feature, which is free.
Go ahead and place a call with WiFi off and see if you can access a web page or an app that uses data. All good? In order to keep this functionality, you will need to leave Enhanced 4G LTE Mode turned on.
Hi.... noticed this thread hasn't been active for awhile. Just wanted to confirm that I did this today with my Nexus 6, and everything worked fine. Had to have HD Voice put on my line for free, and had to reboot. But definitely have simultaneous voice/data now.
I just did this on my Nexus 6. Works great so far. Was able to make a call and browse several web pages at the same time. Awesome info thank you!
yotehtr1 said:
I just did this on my Nexus 6. Works great so far. Was able to make a call and browse several web pages at the same time. Awesome info thank you!
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have you upgraded to MARSHMALLOW?
On my m7 I was able to talk on the phone and continue to use my internet connection. I don't seem to have that functionality on this device. Every time a receive a phone call it drops LTE. I thought running on two simultaneous networks (CDMA + LTE) I could do both. Anyone experiencing the opposite? Did I mess something up? Or is that just how this particular device is? Any input would be deeply appreciated. Thanks.
skuddy said:
On my m7 I was able to talk on the phone and continue to use my internet connection. I don't seem to have that functionality on this device. Every time a receive a phone call it drops LTE. I thought running on two simultaneous networks (CDMA + LTE) I could do both. Anyone experiencing the opposite? Did I mess something up? Or is that just how this particular device is? Any input would be deeply appreciated. Thanks.
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well, lte is data only, calls cant go through lte. you need VoLTE to have voice over the lte network. and sprint doesnt offer volte, not yet at least. well, that or you need two radios in your device. the n6 only has one radio.
^This exactly. However, you can use WiFi, if available, and have the same functionality.
I completely understand what voice over LTE is and the fact that my phone uses CDMA for voice. My question was if my HTC one could use my LTE data and voice at the same time on the same network (even the same tower) why the heck can my n6 not do it? I'm actually disappointed with the lack of this functionality. I thought it was standard when sprint switched to LTE because it is essentially using two networks simultaneously.
skuddy said:
I completely understand what voice over LTE is and the fact that my phone uses CDMA for voice. My question was if my HTC one could use my LTE data and voice at the same time on the same network (even the same tower) why the heck can my n6 not do it? I'm actually disappointed with the lack of this functionality. I thought it was standard when sprint switched to LTE because it is essentially using two networks simultaneously.
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It sounds like you didn't read the memo when it came to spark enabled devices,let me explain. Since sprint is using spark (or for tech people, 800mhz, 1900mhz and 2.5ghz) the newer phones that are spark enable (our nexus 6 being one of them) in order to take advantage of the HD voice upgrade and higher speed data, everything basically goes through one channel instead of two (basically all the older lte enabled phones). So before you had a dedicated channel for lte and a dedicated channel for voice. Now when a voice call is initiated, it's all going through the one channel for HD voice (trust me, when you hear it, you'll know it) instead of being broken up into two. Referring to what you said, it's not a lack of functionality, just the way the phones work now until, like the other posters said, volte is enabled on sprint, which hopefully will be happening this year.
Sent from my Nexus 6 using XDA Free mobile app
Excellent. I didn't know that happened on spark. I knew it was triband and the data speed shows it. I was getting true 24mbps download speeds on msdn subscriber downloads. Thank you for the thorough explanation. Aren't we all giant nerds on XDA?
I did a search, found a few threads in the non-Turbo forums. I've done some research, and some of the data is confusing. As I just got the Droid Turbo a few days ago, thought I'd pose a couple of questions here -
What I do know is voice goes over data network (VoLTE). I assume when in a 3G area, it reverts to CDMA? From the reading I've done, if in a 3G area and move into a 4G area, the call is not dropped. However, going from a 4G area to a 3G area, the call is dropped?
If I have it enabled, does the receiver on the other end have to have Advanced Calling? If not, is there still an advantage to using it?
From other reading, if both ends are on 4G and have Advanced Calling enabled, the sound quality is supposed to perfect. True?
Thx
You are correct about the call dropping going from 4g to 3g. The network cannot switch between volte and 1x, it works going from 3g to 4g because the phone stays on 1x. The person you are calling does not need to have advanced calling but if they do not have it the only benefit is the ability for talk and data at the same time.
97bandit said:
You are correct about the call dropping going from 4g to 3g. The network cannot switch between volte and 1x, it works going from 3g to 4g because the phone stays on 1x. The person you are calling does not need to have advanced calling but if they do not have it the only benefit is the ability for talk and data at the same time.
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Thx for the reply. After a bit more digging, found this -
http://www.verizonwireless.com/support/advanced-calling-faqs/