Database Users

Can anybody else's use data and voice simotaneously

I just tried it and it works. Did not work on my 4s.
Sent from my galaxy s3

Would help if you mentioned carrier. I am assuming you're referring to Verizon LTE as ATT and T-Mobile support this since they are GSM.
Sent from my Galaxy S3

I just tried it and it works. Did not work on my 4s. I'm sorry. For sprint.
Sent from my galaxy s3

Sent from my galaxy s3

I know on Verizon this is only possible when on LTE. On 3G it's still impossible due to the nature of CDMA.

Yeah know that. But it's still working on 3g in Memphis Tn.
Sent from my galaxy s3

Works on my htc rezound on lte and i'm fairly certain it's the only phone save the thunderbolt that can also do it on cdma.
EDIT: Yup, works like a champ!

On SIII on vzw 3g also works when on calls
Sent from my SCH-I535 using Tapatalk 2

Read somewhere that this was possible due to the dual radios in the phone...
And I just tried it... and it worked, so yes, it can do voice and data simultaneously!

data and calls work on sprint simultaneously 3g and LTE (in theory LTE anyway)

ExodusC said:
I know on Verizon this is only possible when on LTE. On 3G it's still impossible due to the nature of CDMA.
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Both rezound and thunderbolt can do data and voice over 3G cdma as they both have dual 3G radios.
I didn't think the GSIII could though. Am I reading right that people with sprint and this phone can?
That'd be nice if the Verizon version can. One thing I love about my rezound.
Sent from my ADR6425LVW using xda app-developers app

ExodusC said:
I know on Verizon this is only possible when on LTE. On 3G it's still impossible due to the nature of CDMA.
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it's not actually a limitation of cdma, it's a limitation of Verizon, and i actually believe it's an artificial limitation, likely to "protect their network and users", as they like to claim for everything....
i have done it a few times on my Sprint gs3, on 3g, since I'm stuck without lte in my city right now.

sarreq said:
it's not actually a limitation of cdma, it's a limitation of Verizon, and i actually believe it's an artificial limitation, likely to "protect their network and users", as they like to claim for everything....
i have done it a few times on my Sprint gs3, on 3g, since I'm stuck without lte in my city right now.
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If you read my post above yours...you'll find you are not right.
Sent from my ADR6425LVW using xda app-developers app

This works on my sprint sg3 and it works on the evo lte... Which one of my main reasons for upgrading to a new phone. This s due to the separation of the radios that prevented this before.

blackhand901 said:
Yeah know that. But it's still working on 3g in Memphis Tn.
Sent from my galaxy s3
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Again no carrier? if on ATT then it always worked.
Sorry I saw you said sprint in an earlier post.

blackhand901 said:
I just tried it and it works. Did not work on my 4s.
Sent from my galaxy s3
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As in, be on a phone call and browse the net at the same time? Yep....but I've been able to do that since my Atrix 2....dont remember if my x10 could.
via Galaxy S III

I was just doing some WiFi tethering and I received a phone call... Noticed I was still getting emails. My first thought was that my laptop automatically reconnected to my work's wireless connection. NOPE! I verified again with an outbound call... Data works on the phone and over tether DURING the phone call. Supposedly this was going to be a feature of EVDO Rev. A, but Sprint had not initiated it yet. This is freaking fantastic. I guess our phones started using 3G for voice
Sprint SGSIII blue

Sprint enabled this under their network as part of Sprint Vision. It is basically an advanced 1X data network that allows data while on phone calls. Only the newer phones with certain frequencies support it. Doesn't force us to use 4G or Wi-Fi if we want data and phone calls together. IPhones do not support this unless you're on a GSM network which Sprint isn't. Sprint is CDMA like Verizon.
Sent from my SPH-D710 using xda premium

I noticed this during a call yesterday and I was pleasantly surprised. When I was reading about this earlier, I thought it would be a feature supported only by towers that had eHRPD support but this is pretty awesome in itself.

ExodusC said:
I know on Verizon this is only possible when on LTE. On 3G it's still impossible due to the nature of CDMA.
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It is possible with the Thunderbolt, and Rezound on Verizon. It also works with GSIII. I was a little torn about getting this phone since I figured I would lose this functionality but was pleasantly surprised when I did a test for s & g's.

using 3G data during a call S4

After checking in to why this would not work I was told that it just isn't supported. You can use 4G and wifi data duringa call but not 3G. It's a little bit ofa draw back for me. I was just wondering what any one else's thoughts where on this?
I do like the phone so far other than this.

tman73 said:
After checking in to why this would not work I was told that it just isn't supported. You can use 4G and wifi data duringa call but not 3G. It's a little bit ofa draw back for me. I was just wondering what any one else's thoughts where on this?
I do like the phone so far other than this.
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I'm taking a chance on sounding silly, but that's just the way it is on CDMA networks. You can only do one or the other on 3G: voice or data. Being able to use voice and data simultaneously is a perk of 4G, LTE or wifi. Of course, if you have no LTE available where you are, or no wifi, it's voice or data. I know it's frustrating. I live in Minneapolis, Uptown area. We never did get very good Wimax at our house, especially indoors.
When the LTE phones came out, I was in no hurry to upgrade, as there was no LTE anywhere in the Twin Cities. No one could hazard a guess as to when it would be rolled out. The Evo LTE has been out for almost a year, and LTE is finally becoming available. It's still pretty spotty, though. The good thing is, even with a weak signal at my house, I still can get nearly 5000kbps down inside my house. That's a lot better than 3G for sure! Sprint is saying we'll have LTE pretty much throughout the city in the next couple of months. I'll believe that when I see it.
I like my S 4 pretty well. It's still strange getting used to Touch Whiz after Sense. I moved to the S 4 after having the original Evo and then the Evo 3D. I'm looking forward to rooting and being able to run custom ROMS on my S 4.

smarcin said:
I'm taking a chance on sounding silly, but that's just the way it is on CDMA networks. You can only do one or the other on 3G: voice or data. Being able to use voice and data simultaneously is a perk of 4G, LTE or wifi. Of course, if you have no LTE available where you are, or no wifi, it's voice or data. I know it's frustrating. I live in Minneapolis, Uptown area. We never did get very good Wimax at our house, especially indoors.
...
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That's not exactly accurate. Some phones can do simultaneous CDMA voice and data. However, it requires extra complexity in the phone (what's called "multiple paths") and with Sprint going to LTE, they decided to put a separate transmit path in the device just for LTE (and Wi-Fi).

smarcin said:
I'm taking a chance on sounding silly, but that's just the way it is on CDMA networks. You can only do one or the other on 3G: voice or data. Being able to use voice and data simultaneously is a perk of 4G, LTE or wifi. Of course, if you have no LTE available where you are, or no wifi, it's voice or data. I know it's frustrating. I live in Minneapolis, Uptown area. We never did get very good Wimax at our house, especially indoors.
When the LTE phones came out, I was in no hurry to upgrade, as there was no LTE anywhere in the Twin Cities. No one could hazard a guess as to when it would be rolled out. The Evo LTE has been out for almost a year, and LTE is finally becoming available. It's still pretty spotty, though. The good thing is, even with a weak signal at my house, I still can get nearly 5000kbps down inside my house. That's a lot better than 3G for sure! Sprint is saying we'll have LTE pretty much throughout the city in the next couple of months. I'll believe that when I see it.
I like my S 4 pretty well. It's still strange getting used to Touch Whiz after Sense. I moved to the S 4 after having the original Evo and then the Evo 3D. I'm looking forward to rooting and being able to run custom ROMS on my S 4.
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There's no harm in sounding silly. :silly: We forgive you.
The Sprint S3 and Evo 4G LTE both do it, it's called SVDO, simultaneous voice and EVDO 3G data (and ofcourse simultaneous voice and LTE and or WiFi).
For some reason, Sprint decided to fore-go SVDO on LTE phones after those two (S3 and Evo 4G LTE) and instead focus on SVLTE. To be fair, in all the years i've been with Sprint (13) i never thought i would ever need or use that feature until i got the S3. The first time i unknowingly used it i didn't even realize that while on a call, i was playing WordFeud multiplayer. It's something i do all the time now, and definitely sad to see it gone on the newer phones.
As their LTE network gets more robust and mature, it won't be much of an issue, but as of now 3G is in more places than their LTE network is. So...

LordLugard said:
There's no harm in sounding silly. :silly: We forgive you.
The Sprint S3 and Evo 4G LTE both do it, it's called SVDO, simultaneous voice and EVDO 3G data (and ofcourse simultaneous voice and LTE and or WiFi).
For some reason, Sprint decided to fore-go SVDO on LTE phones after those two (S3 and Evo 4G LTE) and instead focus on SVLTE. To be fair, in all the years i've been with Sprint (13) i never thought i would ever need or use that feature until i got the S3. The first time i unknowingly used it i didn't even realize that while on a call, i was playing WordFeud multiplayer. It's something i do all the time now, and definitely sad to see it gone on the newer phones.
As their LTE network gets more robust and mature, it won't be much of an issue, but as of now 3G is in more places than their LTE network is. So...
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Thanks to both you guys for setting me straight. I was parroting what I'd always heard from the OG Evo (which I had) and then the 3D, which I just left. Of course, you couldn't do SVDO on either. On the 3D, though, you could do a call + data if on 4G (Wimax), which was and still is, pretty spotty here in Minneapolis-St Paul. Of course, Sprint has been rolling out LTE for a while now. It appears, then disappears a lot. Unfortunately 3G has been awful for months. I will be so thankful when LTE is finally and fully deployed!

No problem, welcome. We are all here to help and learn from each other along the way. :good:

smarcin said:
Thanks to both you guys for setting me straight. I was parroting what I'd always heard from the OG Evo (which I had) and then the 3D, which I just left. Of course, you couldn't do SVDO on either. On the 3D, though, you could do a call + data if on 4G (Wimax), which was and still is, pretty spotty here in Minneapolis-St Paul. Of course, Sprint has been rolling out LTE for a while now. It appears, then disappears a lot. Unfortunately 3G has been awful for months. I will be so thankful when LTE is finally and fully deployed!
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Those devices did not support SVDO. I know the S3 and EVO LTE support it, and possible the Nexus LTE (additionally, the newest Optimus maybe?). I really liked this feature when on the phone and being able to quickly check email or pull up traffic info without relying on WiFi.
The S4 does not support simultaneous voice+data, and I believe that anandtech/ars had good articles describing the data paths employed by the HTC One and S4.
What I found interesting is that when the 4G connection drops out and 3G connects, I can just send a text and get 4G back immediately instead of waiting to hop towers. I suspect that a phone call would serve the same purpose.
Also, toggling 4G off and on will get you back the same mobile IP address. This is not the case with 3G, which results in a new IP address being assigned. In order to get a new IP on LTE, you have to toggle airplane mode (which is likely why this is the first step in troubleshooting LTE connectivity).

Thought I'd help you all out to understand it since you all are sooooo new to having LTE on your phones and all (that was a joke, don't get bent out of shape over it....)
The LTE standard only supports packet switching with its all-IP network. Voice calls in GSM, UMTS and CDMA2000 are circuit switched, so with the adoption of LTE, carriers will have to re-engineer their voice call network. Three different approaches sprang up. Most major backers of LTE preferred and promoted VoLTE (Voice over LTE, an implementation of IP Multimedia Subsystem or IMS) from the beginning. The lack of software support in initial LTE devices as well as core network devices however led to a number of carriers promoting VoLGA (Voice over LTE Generic Access) as an interim solution.[13] The idea was to use the same principles as GAN (Generic Access Network, also known as UMA or Unlicensed Mobile Access), which defines the protocols through which a mobile handset can perform voice calls over a customer's private Internet connection, usually over wireless LAN. VoLGA however never gained much support, because VoLTE (IMS) promises much more flexible services, albeit at the cost of having to upgrade the entire voice call infrastructure. While the industry has seemingly standardized on VoLTE for the future, the demand for voice calls today has led LTE carriers to introduce CSFB (Circuit Switched Fallback) as a stopgap measure. When placing or receiving a voice call, LTE handsets will fall back to old 2G or 3G networks for the duration of the call.
Source
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Just to be a bit more clear, it was not a sprint decision it is based on Qualcomm's chip design. The s4 krait simply supported svdo out the box and the snapdragon 600 doesn't.

themuffinman said:
Just to be a bit more clear, it was not a sprint decision it is based on Qualcomm's chip design. The s4 krait simply supported svdo out the box and the snapdragon 600 doesn't.
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I am not sure that is correct. First of all, the 600 is the CPU, not the modem - which is a separate component altogether. Secondly, I believe SVDO support is more a factor of the front end RF design being set up to feed multiple transmit paths to the modem, which in the case of the Qualcomm modem, I believe has the necessary additional ports to handle it. However, it would have necessitated a more complex RF design which Sprint and Samsung probably opted to forgo, given that Sprint's is already getting on the LTE bandwagon.

myphone12345 said:
I am not sure that is correct. First of all, the 600 is the CPU, not the modem - which is a separate component altogether. Secondly, I believe SVDO support is more a factor of the front end RF design being set up to feed multiple paths to the modem, which in the case of the Qualcomm modem, I believe has the necessary additional ports to handle it. However, it would have necessitated a more complex RF design which Sprint and Samsung probably opted to forgo, given that Sprint's is already getting on the LTE bandwagon.
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You are absolutely correct but wouldn't that be dependent on whether the modem supported that design?

themuffinman said:
You are absolutely correct but wouldn't that be dependent on whether the modem supported that design?
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My best guess is that the advanced modem in the S4 could handle it, but to add it on top of SVLTE along with the newer MIMO antenna configurations and multi-band transceivers and switches found in the latest LTE capable handsets would require the addition of another RF chain in the device and thus significantly raise the complexity of the design to a degree that doesn't make it worthwhile for Samsung to implement it.

It's not going to happen.... It's a USA cdma limitation it has NOTHING to do with the phone
Sent from my GT-I9505 using xda premium

hyelton said:
It's not going to happen.... It's a USA cdma limitation it has NOTHING to do with the phone
Sent from my GT-I9505 using xda premium
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Yes, for the most part, cdma devices has never been able to do voice and 3g data simultaneously but there is something called svdo which allows supported devices to do just that. The HTC thunderbolt on verizon was one of the first phones to support svdo(simultaneous voice and data over 3g on a cdma network). Getting it to work has absolutely nothing to do with the network but how the phone is designed. Now I am a sprint customer so I don't know what other devices supported it on verizon since but I do know that both sprint and verizon's gs3 both support svdo as well as sprints evo lte and a few other devices.

hyelton said:
It's not going to happen.... It's a USA cdma limitation it has NOTHING to do with the phone
Sent from my GT-I9505 using xda premium
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Not true. There have been several devices that could do it.

myphone12345 said:
Not true. There have been several devices that could do it.
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Oh theres plenty!! of devices that support it!! Its the NETWORK that does not.

hyelton said:
Oh theres plenty!! of devices that support it!! Its the NETWORK that does not.
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You keep talking like the network is preventing it from being possible, yes there are technical obsticals but obviously there are ways around it. So the botton line is, can you have a phone thats on a cdma network that can do voice and 3g data at the same time? That answer is yes

Seriously, why are we arguing this much about this? Simultaneous voice AND 3G on Sprint, yes, period. S3 and Evo LTE do it, S4 doesn't. Let's move on to other things.

So no SVDO on Sprint S4 :/

Hi, about a week ago I finally upgraded to the S4 from the S3. And so far, I absolutely love the phone! Only let down, no SVDO (which is dual CDMA radios allowing for simultaneous phone calls and data for those of you who don't know). Because that was one of the features I loved about the S3 and I utilized often. Especially during boring phone calls and/or being put on hold for while. It would allow for me to surf the web, or go on FB while being on a call.
But rumor has it that they decided to forgo SVDO because Sprint was well on their way in deploying LTE, and simultaneous LTE/Voice is possible.
I don't currently live in an LTE area. Can anyone in an LTE area confirm if this is true??
Thx.

Yes it works with LTE as the LTE and call use two different radios. Thus letting us use voice and data at the same time. Works while on WiFi too. Only 3g it doesnt.
Sent from my SPH-L720 using Tapatalk 4

daniel4653 said:
Yes it works with LTE as the LTE and call use two different radios. Thus letting us use voice and data at the same time. Works while on WiFi too. Only 3g it doesnt.
Sent from my SPH-L720 using Tapatalk 4
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AWESOME! Thanks for confirming!!
Sent from my SPH-L720 using xda app-developers app

Yes it only works on WiFi and lte for Sprint. All though other carriers that actually have good networks and even t-mobile can do it. Just one more thing Sprint's network lacks.
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Nope. You need LTE or Wifi. The S3 will probably be the last phone to carry SVDO

OTA update causing data to step down to H

Anyone else notice after the update, during calls your data will force down to H from LTE? Same issue with Nexus 5 and 6p.

divinewisdom said:
Anyone else notice after the update, during calls your data will force down to H from LTE? Same issue with Nexus 5 and 6p.
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Not an issue. Is a feature so that you can get better reception for your phone call.
Sent from my Nexus 6P

anglerstock said:
Not an issue. Is a feature so that you can get better reception for your phone call.
Sent from my Nexus 6P
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Not true. LTE is the better reception for calls. Look up the difference in technology.
As for why and if the latest update drops when making calls... I haven't seen it myself so I can't comment.

obsanity said:
Not true. LTE is the better reception for calls. Look up the difference in technology.
As for why and if the latest update drops when making calls... I haven't seen it myself so I can't comment.
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Can you disconnect from WiFi, see if you get LTE, then make a call see what happens. This is after the latest update today.

obsanity said:
Not true. LTE is the better reception for calls. Look up the difference in technology.
As for why and if the latest update drops when making calls... I haven't seen it myself so I can't comment.
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2g gives better reception than 3g, 3g better than 4g and so on. LTE gives faster data speed but if you want better reception 2g it is.
Sent from my Nexus 6P

Which carrier. Unless you have VOLTE that has always happened.

I noticed the same thing on ATT. During a phone call the phone drops to H. This is not normal, my nexus 5 remains on LTE since I didn't upgrade that phone.
Curious if there's a fix for this.

divinewisdom said:
Can you disconnect from WiFi, see if you get LTE, then make a call see what happens. This is after the latest update today.
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While in a call I'm still on LTE. Yes I'm on the latest update.
---------- Post added at 08:56 PM ---------- Previous post was at 08:48 PM ----------
anglerstock said:
2g gives better reception than 3g, 3g better than 4g and so on. LTE gives faster data speed but if you want better reception 2g it is.
Sent from my Nexus 6P
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I think you got it backwards. It may be true that in some areas 2G may give you a better signal strength than 3G but that has nothing to do with technology and the amount of data which can go through and that includes calls (yes calls are also data and has been for many years since it all went digital).
LTE is just another, newer standard of GSM for calls, text, data and so on.
Also, VoLTE is not the same as VoIP.

Not had any issues from the uk. I generally get 4g. The radios on this phone far suprass the ones on my old xperia Z2.
Anyway didn't i see a post saying that the update disabled a certain band for T-Mobile? Maybe it's to do with that

hal752 said:
Not had any issues from the uk. I generally get 4g.
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Did you read the thread?
The only network in the UK that supports VoLTE (calls while you are on a 4G network) is Three and they don't sell or support the Nexus 6P, so you certainly haven't been getting 4G while you are on a call.

Plain LTE does not support voice, it is only for data. When your phone receives a call it will automatically use H/3g or even 2g for your voice call. Unless your operator supports Voice over LTE (VoLTE)!
Sent from my Nexus 6P using Tapatalk

Same thing. Though voice doesn't use LTE always. LTE is just for data.

mkouk said:
Plain LTE does not support voice, it is only for data. When your phone receives a call it will automatically use H/3g or even 2g for your voice call. Unless your operator supports Voice over LTE (VoLTE)!
Sent from my Nexus 6P using Tapatalk
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I'm not sure you guys understand how LTE works and what it is supposed to do. LTE is just another standard which is better than the old GSM type 3G. It's just that carriers chose to use it only for data because the entire infrastructure was already designed to work on 3G for voice. The transition to full LTE system is taking a bit long but watch when next year Verizon shuts down all 3G CDMA equipment and goes LTE only on the entire network.
T-Mobile will most likely follow along with all the others.

obsanity said:
I'm not sure you guys understand how LTE works and what it is supposed to do. LTE is just another standard which is better than the old GSM type 3G. It's just that carriers chose to use it only for data because the entire infrastructure was already designed to work on 3G for voice. The transition to full LTE system is taking a bit long but watch when next year Verizon shuts down all 3G CDMA equipment and goes LTE only on the entire network.
T-Mobile will most likely follow along with all the others.
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Please don't spread misinformation. LTE standard only supports packet switching so carriers have been using circuit switched fallback (i.e. 3g) for regular calls and we are now seeing operators moving to VoLTE.
Also LTE is based on GSM!
Sent from my Nexus 6P using Tapatalk

mkouk said:
Please don't spread misinformation. LTE standard only supports packet switching so carriers have been using circuit switched fallback (i.e. 3g) for regular calls and we are now seeing operators moving to VoLTE.
Also LTE is based on GSM!
Sent from my Nexus 6P using Tapatalk
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I'm not sure where the misinformation is.
The argument here is that the older systems are somehow better at voice than LTE is and one gets a better signal with 2G for being able to make a call. This is simply not true. LTE supports voice with the implementation of VoLTE and is much superior at handling it. More capacity, clearer calls and better quality calls with much weaker signal strength.
Again, carriers chose to implement it as data only because of many older handsets still out there using 2G/3G. But this will not be for long because LTE is much more efficient which spells $$$ for carriers. Verizon has already started turning off their legacy CDMA system on some towers.
Also, when did I say LTE was not based on GSM?
https://en.m.wikipedia.org/wiki/VoLTE

Simultaneous voice and data

Has there been a determination as to whether the v20 has Simultaneous voice and data capability? I still waiting patiently (not) for delivery of my v20.

This is completely carrier dependent in handset firmware configuration

Skripka said:
This is completely carrier dependent in handset firmware configuration
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I agree, my carrier is Sprint.With my old device a note 3 it has dual antennas making simultaneous voice and data possible on 4g lte. Now with Sprint Spark it not possible with a single antenna device. Do you know by chance if the v20 is a dual antenna device?

Not sure about the single sim version, might work on the dual sim one, at least I can have 4G+3G or 3G+3G simultaneous

Works will AT&T. I know for a fact, just used both Simultaneous an hour ago

Tmo and att have volte for sure

Any GSM carrier will be able to do voice and data at the same time. It's the CDMA carriers that will be up in the air if they will be able to or not.

I can confirm the Verizon V20 does voice & data at the same time due to the voice over LTE. I haven't had that functionality since the HTC Thunderbolt when 4G first came out years ago
I've been running the V20 for 8 days now and LOVE it. Now if only we can find a way to exploit the locked bootloader.

Do you mean VoLTE?
Sent from my LG-H990 using Tapatalk

The Verizon model has video calling so it has data and voice at same time.
Sent from my VS995 using Tapatalk

mrtruckincowboy said:
The Verizon model has video calling so it has data and voice at same time.
Sent from my VS995 using Tapatalk
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My VZ LG v20 does NOT have voice and data at same time.

Go into advanced calling and turn that on it'll give it to you then
Sent from my VS995 using Tapatalk

jimzweb1 said:
I agree, my carrier is Sprint.With my old device a note 3 it has dual antennas making simultaneous voice and data possible on 4g lte. Now with Sprint Spark it not possible with a single antenna device. Do you know by chance if the v20 is a dual antenna device?
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That's the sole reason why I left Sprint
Sent from my VS995 using Tapatalk

All Verizon lg v20 have voice and data at the same time. You can be on a phone call with LTE speeds.
I had sprint years back and hated them because my music streaming would stop and load. Then, another spotty sprint area, my music would stop again and load. Hated that.
Sent from my VS995 using Tapatalk

has anyone with a sprint v20 been able to verify if this does work? my sprint note 4 does not have this, but my previous Sprint S4 did have it. I am hoping the Sprint v20 has it.
Thanks,
JD

Until they introduce VoLTE on Sprint no Sprint phone that has all of the LTE bands in it will be able to do simultaneous voice and data and VoLTE is not a priority for Sprint right now. So you either gotta move back to something like the Note 3 and get less LTE coverage or leave Sprint to get what you want.
Sent from my LG-LS997 using Tapatalk

FJ40dan said:
My VZ LG v20 does NOT have voice and data at same time.
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Mine does, but only when connected in 4G. And I believe advanced calling needs to be activated for it to work.

To echo above, the simultaneous works fine on the V20, even stock out of the box with no changes, but you have to be in a 4G LTE area to do it. If you drop to 3G, you lose that ability. Pretty sure it was the Thunderbolt that last had the option to do both in a 3G area , as was mentioned earlier. Only thing that I haven't tested, is switching. And by that, I mean, if you're in a 3G area on a call, and enter a 4G LTE coverage, if it'll pick that up while within the call, or if you have to hang up before it will switch over. My S6 wouldn't do it, and I really don't expect the V20 to either. Probably something with how the data is "turned off" in a manner when the call is made, so it probably isn't even actively hunting for a data signal until the call is over. I live in an area where I bounce between nothing, 3G, and 4G on my way to work, so I always had to make sure to toggle airplane mode off and on if I was just coming out of a spot where I was still picking up 3G but knew there was 4G there, so the phone would grab the better signal coming in, and then make my phone call to keep the data. So far, the V20 seems to be a touch quicker than my S6 was in the 3G/4G switchover though.