Database Users

No data connection while in call

I am having a strange problem.
As soon as I start a call all data connections (including Wifi) are dropped.
They automatically come back after the call is ended.
Has anyone else experienced this?
Is this something that can be fixed?
Thanks in advance for all the help.

I have had this happen to me only when connected to edge. While on 3g the connection stays.

aad4321 said:
data connections are always dropped during calls, but wifi shouldnt drop. I have never had the wifi shutoff while i was making a call....strange
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the point of 3G is that the connections will not drop.

Thanks for all the info.
I tested the Wifi again and that did work.
I don't live in a 3G market. So i guess i'll have to wait.

it only comes down to the equipment of the gsm network operator
i never loose data connection with any of my phones be it
gprs or 3g
but if the network operators central equipment dont support it
it dont matter what protocol

I actually lose 3g when in a phone call...Emails, Txt's and other stuff does not come though. On my blackberry, txt will still come through while in a call. Its wierd, I have full 3g reception and I cannot browse through 3g while in a call or recieve any txt.

Simultaneous Voice and Data Connection???

Hey guys, I am not sure if I am missing something in the settings or what, but for some reason, when i am talking on the phone I cannot connect to the internet. My HSDPA connection turns off. Once I hang up, it reconnects. I thought the X1 was capable of doing simultaneous voice and data connects. What causes this? And is there a way to enable both voice and data connects at the same time? Thanks!

boy I explain this a lot
simultaneous voice and data have been available since the first gprs phone
it was the reason gprs was invented rather then dialup data over gsm
but if the operators hardware in the centrals don't support it no phone or setting
can change that
i'be been doing in on my old himalaya gprs phone for ages
and now on my x1 never had any problems

Well, I can do it on my old 3G phone, but not on my X1a. AT&T has allowed this for years, I know that. I just want to know if there is a way I might have accidentally turned it off or something.

Mine won't do it either. My Xperia kicks on the Wifi and continues PUSH email delivery through when ever I have the phone in use. BUT, my blackberry and iPhone would both not allow voice and data at once. It may have to do with T-mobile's settings where I am though.

I have the same issue with T-MO network.

you mean like talking on the phone and continuing surfing the net?

leobox1 said:
you mean like talking on the phone and continuing surfing the net?
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Exactly. My internet gets "put on hold" for the duration of the phone call.

I face this when i have a GPRS/EDGE coverage, but when connected to 3G/3.5G/H it's ok, i can make both without problems

anaadoul said:
I face this when i have a GPRS/EDGE coverage, but when connected to 3G/3.5G/H it's ok, i can make both without problems
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I would like to expand this...
anaadoul is correct. In fact, regular GPRS cannot send data simultaneously as the voice call.
EDGE can SOMETIMES do so if the carrier's tower/cell supports this, but not all do, so while EDGE provides faster data connection, you may or may NOT get simultaneous data and voice. This is my experience at least. I think EDGE is always supposed to support simultaneous voice/data but my experience shows otherwise.
This is one of the primary reasons I am using a 3G network and 3G phone now. 3.5G/H while providing faster data, have no difference in regards to simultaneous voice data, but do use more power/battery so if I know I'm going to be out a long, long time, I turn H/3.5G off.
For me, it is VERY important I can use data and voice at the same time. I have my phone checking mail every 10 minutes, and it takes about 10-30 seconds to successfully check mail, so that means every 10 minutes, if an incoming call arrives, it'll go straight to voicemail and I miss it. That is not acceptable.
Plus, if I receive a business call, I can check mail, open up websites, etc. WHILE i am on the call. You have no idea how useful that is.

johnchan78 said:
I would like to expand this...
anaadoul is correct. In fact, regular GPRS cannot send data simultaneously as the voice call.
EDGE can SOMETIMES do so if the carrier's tower/cell supports this, but not all do, so while EDGE provides faster data connection, you may or may NOT get simultaneous data and voice. This is my experience at least. I think EDGE is always supposed to support simultaneous voice/data but my experience shows otherwise.
This is one of the primary reasons I am using a 3G network and 3G phone now. 3.5G/H while providing faster data, have no difference in regards to simultaneous voice data, but do use more power/battery so if I know I'm going to be out a long, long time, I turn H/3.5G off.
For me, it is VERY important I can use data and voice at the same time. I have my phone checking mail every 10 minutes, and it takes about 10-30 seconds to successfully check mail, so that means every 10 minutes, if an incoming call arrives, it'll go straight to voicemail and I miss it. That is not acceptable.
Plus, if I receive a business call, I can check mail, open up websites, etc. WHILE i am on the call. You have no idea how useful that is.
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Click to collapse
allow me to agree/disagree with you on some points.
imo, Edge doesn't support simultaneous call/data, except some devices that have some dual GSM radio as both operate on the same radio device level.
afaik the technology of 3G+ is different, the voice itself is not being transmitted as GSM signal, it's converted into a something similar to VOIP (that what makes Video Call Happens), a phone call uses one channel for audio transmit, the good thing is that the archetecture of 3G+ is designed to have multiple simultaneous connections to the tower cell, this will allow more transfer bandwidth, while this makes you able to browse and talk at the same time, it also puts more load on the cell (the cell can accept a certain fixed number of connections depending on the location and population of the area) resulting on people getting Network Busy Error!
so the result is a data connection is dropped if the cell is full in order to take a phone call.
what makes 3G+ really fast is that it can open milti channels with the cell, allowing more allocated bandwidth (we all know it reaches up to 7.2mbps).
3G+ consumes LESS power imo than GPRS/EDGE (Data connection only, voice calls consumes more on 3G+) as 3G+ will close all active connections when there is no application transferring (see the H icon disappearing when no application is downloading anything and 3G/3.5G icon is there, once an internet request is made it will go back to H).
so the result i think as follows
GPRS/EDGE : Low battery consumption for voice calls, High for Data & No simultaneous Call & Data.
3G/3.5G/HSDPA : Higher battery consumption for voice calls, Low for Data & Supports simultaneous Call & Data.
btw, i am connected to my Company's exchange server using Microsoft Direct Push. when the connection is G or E, i loose my battery more quicker than 3G/3.5G/H
even i have noticed that 3G+ consumes way less power that WiFi (now my email is synced over the air even in the office so my battery won't die quickly. don't worry i have a huge data plan )
please correct me if i'm wrong, all my information above is based on personal experiance
cheers

Well, I don't know if this will work for everyone but I fixed my issue. I just called my voicemail and put it on speakerphone in order to keep the voice connection open. Then I tried surfing with Opera a few times. The first few times it wouldn't connect, but then suddenly my phone beeped twice and I got the connection window saying my 3G was connecting. At first I thought I had just forced it but in retrospect, I think I just had a bad signal and had just connected to my 3G network. Thanks for all the info guys!

k20z3_si said:
suddenly my phone beeped twice and I got the connection window saying my 3G was connecting.
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Click to collapse
Call dropped maybe?!
try this,
Start -> Settings -> Phone -> Band
1.Set network type to WCDMA
2.Set GSM/UMTS band to UMTS
these forces your device into a 3G+ network
3.open commManager from start menu
4.turn dataconnection ON
5.Make a call
6.try browsing
7.Post Here
cheers

anaadoul said:
allow me to agree/disagree with you on some points.
imo, Edge doesn't support simultaneous call/data, except some devices that have some dual GSM radio as both operate on the same radio device level.
afaik the technology of 3G+ is different, the voice itself is not being transmitted as GSM signal, it's converted into a something similar to VOIP (that what makes Video Call Happens), a phone call uses one channel for audio transmit, the good thing is that the archetecture of 3G+ is designed to have multiple simultaneous connections to the tower cell, this will allow more transfer bandwidth, while this makes you able to browse and talk at the same time, it also puts more load on the cell (the cell can accept a certain fixed number of connections depending on the location and population of the area) resulting on people getting Network Busy Error!
so the result is a data connection is dropped if the cell is full in order to take a phone call.
what makes 3G+ really fast is that it can open milti channels with the cell, allowing more allocated bandwidth (we all know it reaches up to 7.2mbps).
3G+ consumes LESS power imo than GPRS/EDGE (Data connection only, voice calls consumes more on 3G+) as 3G+ will close all active connections when there is no application transferring (see the H icon disappearing when no application is downloading anything and 3G/3.5G icon is there, once an internet request is made it will go back to H).
so the result i think as follows
GPRS/EDGE : Low battery consumption for voice calls, High for Data & No simultaneous Call & Data.
3G/3.5G/HSDPA : Higher battery consumption for voice calls, Low for Data & Supports simultaneous Call & Data.
btw, i am connected to my Company's exchange server using Microsoft Direct Push. when the connection is G or E, i loose my battery more quicker than 3G/3.5G/H
even i have noticed that 3G+ consumes way less power that WiFi (now my email is synced over the air even in the office so my battery won't die quickly. don't worry i have a huge data plan )
please correct me if i'm wrong, all my information above is based on personal experiance
cheers
Click to expand...
Click to collapse
I agree... 3G and 3G+ seem to consume LESS battery than WIFI!
As for Edge, my experience is that I never could get simultaneous voice/data, but you're right, both the cell AND the phone need to support this function. I dont think our Xperia's hardware actually supports this at all. When I switched to using the Xperia I had purposely changed to a 3G network to take advantage of the 3G/3G+ capabilities it has.

i am quite sure that GPRS does not support simultaneous... everytime i call, a "cancel" icon appeared

I called AT&T to see if they support simultaneous Data and Voice and they said they do, but your phone has to as well. The X1 supports it also, so I just think I wasn't asble to do so because I was only in GPRS, not 3G.

leobox1 said:
i am quite sure that GPRS does not support simultaneous... everytime i call, a "cancel" icon appeared
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Click to collapse
It doesn't. We already stated that above. anaadoul and me already stated that above.

Voice AND data at the same time on the tmobile network?

I got an email while on a call without wifi. I'm in dallas. Anyone else getting data and voice now?

Has been possible since the beginning of time as long as you are on 3G

I concur. ↑
Sent from my Nexus One using XDA App

Really? I've never been able to do that until recently.
Usually when I'd start a call I'd lose the 3G icon and if I received email while in call it wouldn't show up until after I hung up.
Couldn't mess with data without wifi.
Used to do this on my cliq and G1 as well...
Odd.

Also been doing both (on TMob 3G) since February...

Any gsm phone can do that, but it is impossible for cdma

Your phone may have been set to WCDMA only up until now.

chalk that up as a win for GSM and a lose for CDMA

JCopernicus said:
Your phone may have been set to WCDMA only up until now.
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Click to collapse
WCDMA is 3G, it has nothing to do with CDMA

In a weak 3G signal area, the phone usually does a handover and transfers the call to the GSM network when the 3G signal falls under some threshold, and GSM doesn't support simultaneous voice and data (icon disappears while on a call)
maybe you have better 3G coverage now and your nexus doesn't need to go the GSM route

I've noticed problems with using data and voice together too. What seems to happen is that it works ok at first, but the instant you lose 3G it never comes back until the call is over, no matter how good your signal. Very frustrating when trying to use your data while on a long call.

Both AT&T and T-Mobile (as can any GSM carrier worldwide) can do voice and data at the same time as long as your phone has a "3G" connection visible while on the phone call. This has always been possible.
What you may see happen is that if you wrap your hands around the bottom of the phone during a call, the signal may drop to "E" or Edge. You can't use data and voice at the same time if your phone is on Edge.
To alleviate this, use a wired or Bluetooth headset, or hold the phone with your fingers rather than your whole palm.

Paul22000 said:
What you may see happen is that if you wrap your hands around the bottom of the phone during a call, the signal may drop to "E" or Edge. You can't use data and voice at the same time if your phone is on Edge.
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Have you ever seen my problem where once the signal drops to Edge it will never go back to 3G? It doesn't seem like normal behavior to me but it seems to always happen when I need my data during the call. I've been stuck on multi-hour calls where my phone refused to go back to 3G almost from the beginning, and then the second I hang up the phone goes right back to a 3G signal with full bars again. Very frustrating!

pfmiller said:
I've noticed problems with using data and voice together too. What seems to happen is that it works ok at first, but the instant you lose 3G it never comes back until the call is over, no matter how good your signal. Very frustrating when trying to use your data while on a long call.
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Click to collapse
the ATT 3G network is not setup to do handoffs from gsm back to 3g. it currently will ONLY handoff from 3G to gsm during a call, and if you are still on your call, it will not switch back until you hang up. in the future this can be enabled both ways. tmobile apparently is setup the same way for now. so you're experience is normal until they reconfigure their network.

Actually it depends on the phone hardware. It IS possible to use GPRS and voice as well if the hardware supports it, its not only something available on 3G/UMTS/WCDMA. There is a pretty even split between class A and class B phones these days, you should look up the specs of the phone you're using.
Nearly all 3G devices allow you to use data and voice together since it isnt timeslot based and so voice and data is logically split and not time divided. This means you dont need specially designed hardware to do it, just the processing power to do it.
Class A
Can be connected to GPRS service and GSM service (voice, SMS), using both at the same time.
Class B
Can be connected to GPRS service and GSM service (voice, SMS), but using only one or the other at a given time. During GSM service (voice call or SMS), GPRS service is suspended, and then resumed automatically after the GSM service (voice call or SMS) has concluded.
Class C
Are connected to either GPRS service or GSM service (voice, SMS). Must be switched manually between one or the other service.

@kam187, thanks for that. I've been with T-Mobile since they were Voicestream, about 10 years now. And I thought I was making voice and data connections with my Nokia phone years ago, before their 3G rollout.
Here is the last phone I used before going the G1 route.
http://www.gsmarena.com/nokia_e61-1322.php

Yep E61 is on nokia's list of Class A devices:
http://wiki.forum.nokia.com/index.p...s_supporting_GPRS_Class_A_(Dual_Transfer_Mode)

Why no voice and data?

I was on the Phone with Dell trying to order my new Sony Bravia TV and I was trying to use the internet so I could give the rep the proper item number. To my surprise I couldnt surf the web and do voice at the same time. I thought on GSM network this was possible. When I had Cingular a few years back this was possible. What gives? Why am I not about to do both at the same time?

That's strange. I've been on the phone and surfed the internet and/or used most of the other functions on the phone at the same time.

I've had no problems talking and surfing at the same time provided I had a 3G signal. Maybe you were in a marginal reception area and the signal wasn't solid but it does work.

I dont know why it didnt work, and it sorta pissed me off, does it have to be 3g in order to do voice and data

937dytboi said:
I dont know why it didnt work, and it sorta pissed me off, does it have to be 3g in order to do voice and data
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Nope. This is my first 3g phone on t-mobile. Never had a problem with edge voice + data

937dytboi said:
I was on the Phone with Dell trying to order my new Sony Bravia TV and I was trying to use the internet so I could give the rep the proper item number. To my surprise I couldnt surf the web and do voice at the same time. I thought on GSM network this was possible. When I had Cingular a few years back this was possible. What gives? Why am I not about to do both at the same time?
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Click to collapse
Was data working otherwise in that area? I've been in some areas where data doesn't work at all.

it should have been.

On edge I can't get consistant voice and data with any phone I've ever had, it is more consistant when getting a 3G signal.

You need a 3G signal to do Voice + Data as 2G (G)PRS nor 2.5G (E)DGE have enough bandwidth to support both.

1xrtt calls coming in while surfing

is there any way to make it so if im on 1xrtt and surfing a call can come in?

Calls override data.
Sometime this year, Sprint is supposed to upgrade to 1x Advanced. So once that's done and one uses a phone capable of 1x Advance, you'll be able to surf and be on a call at the same time. Sorry to say, the Epic is not a 1x Advance phone.

Right now the only way to do that is use wifi for data or 4g for data..
if they upgrade to SVDO in the future you can do both as mentioned above...

no i meant when i am on 1x and actively surfing no calls coming ie i miss calls. is there a way to prioritize calls overriding an activate data stream?

No. There is no way to change this. That's the nature of the current 1xRTT implementation. I think this is done at the tower, and not on the phone.

I miss calls a lot when I have bluetooth on and listen to pandora/slacker.. I think the phone gets confused, too many radios active.

How do you all.even know you are in the 1xrtt network and.not 3g?
Sent from my Evo Killer!!!

I've gotten many calls while surfing the web, even text messages come in. They did recently just upgrade my service at my house, though. (If it is a tower possibility.)

musclehead84 said:
How do you all.even know you are in the 1xrtt network and.not 3g?
Sent from my Evo Killer!!!
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Either a theme with the icons fixed or the mobile signal widget.