Related
Hello everybody!
I know this looks like it belongs in the networking forum, but I'd like an answer specific to the Jamin.
The problem is this:
If I am downloading a page with IE it blocks incoming calls. If the GPRS connection is active but no data is transferring calls go through.
I found an old thread on this and it seems to be a phone specific problem (some models do this and others don't).
So am I missing something?
Is this a ROM / hardware thing, or is there a setting some ware, or maybe this is dependent on the cellular provider?
Does anyone else here experience this? Please let me know and if my question is stupid don't hesitate to point it out.
P.S. I am using latest official i-mate ROM 2.13.9.23 WWE and 1_02.20.21 radio.
Sounds quite strange, if I remember well and from experience in low-coverage areas the GPRS signal is dropped first if calls are made on the handset and there is not enough bandwith for both. But I am sure we find a GSM network expert here that can enlighten us. Interesting question.
Hi,
I have aone xda Atom.
Have the same problem.
For example media player streaming internet radio , phone calls don´t came through. Or 1 in 10 came through.
If I´m connect without streaming or downloading then the call came through
Regards
Josef
As far as i remember you can't recieve any calls exactly when downloading. When GPRS is simply on it's ok. Don't really remember why...
As far as i remember you can't recieve any calls exactly when downloading. When GPRS is simply on it's ok. Don't really remember why...
The phone and GPRS are mutually exclusive.
We have a GPRS application that needs the connection to be alive as much as possible to receive incoming data. Phone calls get in the way of this, which is why I know the problem exists.
I do not have a validated reason for the problem (I believe they use the same transmission streams over the network, which means the network needs to know whether it is transmitting data or voice. Data needs to be reliable, with no dropped packets, while voice needs to be quick, with dropped packets being ignored, or something similar anyway).
Graham.
Hi,
Will like to add. Have one Universal too.
With the Universal if I ´m downloading or listen internet radio, when a call cames the downloading is suspend. Allways.
Regards
JoseF
Seems like it depends on service provider not on the device... I remembere the time when GPRS have just been started on NW Megafone - GPRS traffic lived like poor homie with the voice transmissions so when many peoples speaks - gprs is dead. Nowdays we got edge and gprs works fine. But still we got subj
Well, at least now I know it's not a matter of settings or ROM version.
Still not sure if it's the phone or the provider, but since I don't fell like switching either of them (specially the phone ) I guess I'll have to live with it.
Just to clarify: I don't expect simultaneous voice and data, but it would have been nice if incoming calls killed GPRS to get through even if I am in the middle of a download.
P.S.
Thanks every one for your prompt responses!
Not much help, but this is among the reasons I use a multicard - maybe you want to consider it. A multicard is two SIM cards with the same number, but one card is activated for GPRS/UMTS and SMS, and the other one for voice traffic and SMS. Especially with a flat data rate, GPRS is always on, and one does not have to use the Prophet as a phone all day. It means you have to carry two phones, but for a heavy user working with these tools all day it makes perfect sense. Just my five cents...
Just to clarify: I don't expect simultaneous voice and data, but it would have been nice if incoming calls killed GPRS to get through even if I am in the middle of a download.
Click to expand...
Click to collapse
Hm... Let me think... I remember there was such a nice setting on my Panasonic GD87, called "Wait for incoming call" or smt like this. Nice feature. Gives the ability of cellular phone disconnect from gprs and recive incoming call. Seems like I'll be missing it
Are there any news on this?
I have the same problem, that incoming calls are blocked when using GPRS.
Hi yoda_143.
I recently got to do some testing at work with phones from different manufacturers (MIO, HP, ASUS) and my SIM.
The conclusion: It is not the Jamin!
On all phones incoming call was blocked while data was transferred.
I haven't had the chance to test it with different providers, but I suspect this will not make a difference.
It would be nice though if there was a way to give voice calls priority even if it meant starting the download over from the beginning after the call ends.
Guys this might help
http://www.gsmworld.com/technology/gprs/class.shtml
Class A, Class B & Class C?
The class indicates the mobile phone capabilities.
Class A
Class A mobile phones can be connected to both GPRS and GSM services simultaneously.
Class B
Class B mobile phones can be attached to both GPRS and GSM services, using one service at a time. Class B enables making or receiving a voice call, or sending/receiving an SMS during a GPRS connection. During voice calls or SMS, GPRS services are suspended and then resumed automatically after the call or SMS session has ended.
Class C
Class C mobile phones are attached to either GPRS or GSM voice service. You need to switch manually between services.
BUT; even my Wizard claims that it's Class B, does the same thing and blocks incoming calls while downloading. So what does it mean?? Maybe a network provider issue :?:
From my use of XDA2i it appeared that phone can transfer GPRS data or phone call not both at the same time.
If you want both then you will need 3G/UMST
The Universal will happily allow phone calls whilst surfing over a 3G connection. Even on Universal you lose the ability for data&phone if you are using GPRS.
I see but it says everywhere that Class B phones has to stop data transfer and accept incoming calls. My old Sonyericsson T630 was doing the job! BTW my network provider claims in their website FAQ like this..
Q- During download with GPRS, if an incoming call occurs, do my GPRS connection stops?
A- During download with GPRS, if an incoming call occurs, you can easily accept the call. During call, your data transfer suspends and after call ends, goes on where it was suspended.
EDIT: I talked with network operator today and they changed their web site saying after a few tests that "u can't suspend and resume GPRS data flow, while data flow incoming calls are blocked!!"
While Wizard is Class B and the operator uses NOMII , all architectural must be wrong.
Really WEIRD, isn't it?
This article is also interesting (don't look "symbian" thing, it is a general article about GPRS/NOM)
http://www.symbian.com/symbianos/standards/symbianongprs.html
Network operation mode and phone classes
The Network Operation Mode, or NOM, is responsible for the capabilities of a GPRS network, while the class indicates the mobile phone capabilities. On NOM 1 networks, mobile phones with the right capabilities can have simultaneous circuit- and packet-switched connections. On NOM 2 networks, mobile phones can remain attached to the GPRS networks when in a voice call but they can't transmit data at the same time. On NOM 3 networks, mobile phones can either establish a packet-switched data connection or a circuit-switched voice one but they need to disconnect from one to establish another.
Class A phones can make full use of NOM 1 networks: they can use circuit-switched voice and GPRS data services at the same time. Class B phones can register circuit-switched voice and packet-switched data services at the same time but may only use one at a time. Should the user receive a call while on the internet, they can take the call and GPRS service will be suspended, resuming once the voice call is ended. Resuming GPRS service is much faster than re-establishing a data call. Class C phones can only register for packet-switched data or for circuit-switched voice services; if the user chooses GPRS, then they will be totally unavailable for GSM calls and reciprocally.
End-users will initially have access to Class B mobile phones, which are able to make and receive calls while simultaneously being registered with GPRS services - GPRS services will automatically be suspended and resumed at the end of the call. Class B phones only support one active service at a time - GSM (voice, fax or data) or GPRS (data) - though both services can be registered with the network and the phone can switch automatically back and forth. However, should the user roam to a network area that is NOM III, their Class B phone will effectively be working as a Class C phone.
New applications designed to run in an online environment will be developed to take advantage of GPRS and 3G networks. The user may well experience a 'blurring' of applications whereby they won't need to switch task nearly at all.
my universal (t-mobile) on 3g in australia is quite fine i tested the situation you guys are talking about and itl mmove he program to background and take the call (both do run simultaniously (internet might slow down alittle by about 3 Kb/s so hope this helps someone... byebye (GREAAT WEBSITE!)
Ok guys, i need some of you to do a bit of testing for me, here is my problem:
When my 3.5G (HSDPA) Data connection is active I cannot make or recieve phone calls.Any incoming call goes straight to voicemail and any number I dial the phone will display "call ended" before it even starts to to ring. The minute I close the data connection the phone works again.
I have done a lot of searching on net and in this forum, some other member are having the same problem. But i think it's only with vodafone, T-mobile don't seems to have this problem. What T-mobile do is to disconnect the data transfer ot reduce it to only 3G while calls comes in. BUt vodafone don't do that, it receive phones ok when in 3g mode but no ok in 3.5g at all. It doesn't switch itself.
So please if you have a vodafone and Athena, try go to Internet, and make sure it's 3.5G, while data is transferring, make a phone call to yourself and see whether it gone through. Please can t-mobile user test it and confirm it does work on your device as well. Thanks
If it's vodafone's problem.....i will have a very long call with them tomorrow then
p.s. Please make sure you test it "WHILE" the data transfer is active, so e.g. open up a site in Opera, while is loading, make the phone call, i am guessing for T-mobile, it should switch from 3.5G to 3G to enable to call comes in, but for Vodafone, it won't do that and will just reject the call!!!
Thanks in advance!!!
This is the same with all 3.5G devices... Its a problem with the Vodafone HSDPA network.
I was reading about people who purchased a Nokia n95 and got a insert in their box advising that if they experiance problems with in/outbound calls to switch to 3G or GSM!
The only difference between tmob and vodafone is the hardware in the network. tmob is running Nokia HSDPA hardware/software and vodafone use erricson.
My advise it to use the bandswitch application which allows you to turn on HSDPA when needed keeping your device in gsm mode the rest of the time. It will also increase your battery life.
doedoe said:
This is the same with all 3.5G devices... Its a problem with the Vodafone HSDPA network.
I was reading about people who purchased a Nokia n95 and got a insert in their box advising that if they experiance problems with in/outbound calls to switch to 3G or GSM!
The only difference between tmob and vodafone is the hardware in the network. tmob is running Nokia HSDPA hardware/software and vodafone use erricson.
My advise it to use the bandswitch application which allows you to turn on HSDPA when needed keeping your device in gsm mode the rest of the time. It will also increase your battery life.
Click to expand...
Click to collapse
which application will you suggest? btw this is very very bad for me since i use emoze which is a push mail application, my connection to internet is always on, and it always runs at the highest speed (which is HSDPA). Therefore if i have this application open (must do if i want my mail to get push in), then i can't receive phone calls.......
Looks like T-mobile's one is much better in this case, wonder what they whill say when i phone up tomorrow. I think this is quite a serious problem, while you are tramsmitting data ( e.g. liveTV, liveRadio, push mail, downloading, browsing.......)the phone won't work!!!!
I will have a long discussion about this with Vodafone tomorrow and see whether they can cancel my contract......
So T-mobile one will switch itself from 3.5 G to 3G while call comes in?
HSDPA
Hello
I'm using at the moment 3G can someone tell me if I buy the HTC Advantage well it support HSDPA.
If it does how do I activate it do I need a new sim card or do I call Vodafone which is my service provider to activate the feature.
Thanks
Gigino
gigino said:
Hello
I'm using at the moment 3G can someone tell me if I buy the HTC Advantage well it support HSDPA.
If it does how do I activate it do I need a new sim card or do I call Vodafone which is my service provider to activate the feature.
Thanks
Gigino
Click to expand...
Click to collapse
your question is a bit out of the topic, anyway, of course Advantage support HSDPA, most of the sim card already 3G capable, if some reason you have the old type of sim card, then request a new one. You can tell when you connect your device which type of service you are getting. For vodafone you do not need to activate it, it's already been activate.
Try this: http://forum.xda-developers.com/showthread.php?t=286844&highlight=today+plugin+band
or
this: http://forum.xda-developers.com/showthread.php?t=299070&highlight=today+plugin+band
Personally, I would use the first link
doedoe said:
Try this: http://forum.xda-developers.com/showthread.php?t=286844&highlight=today+plugin+band
or
this: http://forum.xda-developers.com/showthread.php?t=299070&highlight=today+plugin+band
Personally, I would use the first link
Click to expand...
Click to collapse
right, thanks for that, i have notice about this application too but don't think is much help here. Basically what i want to do is let my device automatically change from 3.5G to 3G when calls comes in, this program doesn't allow you to do that. It can manually swtich between 3G and GPRS, but not from 3.5G to 3G and not automatically as well.
So here is the situation when you will face problem, if you are using vodafone, and your device is 3.5 capable. When you are browsing on the net, or listen to live radio, or watch live TV, or do PUSH mail, of course you want it to the highest speed and it require you to have continues data transmission, so while you are doing that, you won't be able to receive any phone call at all, it will all goes into your voice message. HENCE you will miss a lot of calls !
From how i see it, this issue is big. And big enough for me to have a long chat with Vodafone and possibility change to T-mobile.
So before i do that, i need to make sure three things, for vodafone user, do you have the same problem? and for t-mobile user, do you NOT have this problem. Is there any ways to fix this?
My contract cancellation fee is about £350 so i need to make sure T-mobile one works before i go ahead, thanks for the help guys.
wu5262 said:
right, thanks for that, i have notice about this application too but don't think is much help here. Basically what i want to do is let my device automatically change from 3.5G to 3G when calls comes in, this program doesn't allow you to do that. It can manually swtich between 3G and GPRS, but not from 3.5G to 3G and not automatically as well.
So here is the situation when you will face problem, if you are using vodafone, and your device is 3.5 capable. When you are browsing on the net, or listen to live radio, or watch live TV, or do PUSH mail, of course you want it to the highest speed and it require you to have continues data transmission, so while you are doing that, you won't be able to receive any phone call at all, it will all goes into your voice message. HENCE you will miss a lot of calls !
From how i see it, this issue is big. And big enough for me to have a long chat with Vodafone and possibility change to T-mobile.
So before i do that, i need to make sure three things, for vodafone user, do you have the same problem? and for t-mobile user, do you NOT have this problem. Is there any ways to fix this?
My contract cancellation fee is about £350 so i need to make sure T-mobile one works before i go ahead, thanks for the help guys.
Click to expand...
Click to collapse
Hey Wu.
I'm with T-Mob and whilst I can receive and make calls whilst surfing or downloading (so presumably Push e-mail aswell), it is not always as reliable as I would like it to be.
It does work and generally allows simultaneous voice and data transmission, but for some reason it sometimes (only on occasion) will 'pause' the internet/data transmission (specifically download) and break the data connection to allow voice calls but automatically resume the data connection straight after the call.
It's a bit confusing sometimes....but that could be due to not knowing whether I'm on HSDPA or 3G at the time?!?
In any event, it does support the two simultaneously and switching is definitely automatic.
I'd go the T-Mobile route if I were you, If the switch is not too costly for you.
mackaby007 said:
Hey Wu.
I'm with T-Mob and whilst I can receive and make calls whilst surfing or downloading (so presumably Push e-mail aswell), it is not always as reliable as I would like it to be.
It does work and generally allows simultaneous voice and data transmission, but for some reason it sometimes (only on occasion) will 'pause' the internet/data transmission (specifically download) and break the data connection to allow voice calls but automatically resume the data connection straight after the call.
It's a bit confusing sometimes....but that could be due to not knowing whether I'm on HSDPA or 3G at the time?!?
In any event, it does support the two simultaneously and switching is definitely automatic.
I'd go the T-Mobile route if I were you, If the switch is not too costly for you.
Click to expand...
Click to collapse
well, switch is very costly......£350. Once thing you need to make sure is whether you are on HSDPA or 3G, because in 3G, you can have voice and data at the same time with no problem, but in HSDPA, you can't, but even that, the best solution (i think it's the T-mobile solution) is when calls comes in, drop the data speed to 3G to allow calls to comes in, once calls finish, bring up the speed to HSDPA, this case you don't miss any calls. Apparently, this isn't the Vodafone way, for Vodafone, if you are on HSDPA, the system simply don't do anything therefore you miss all your calls.....
Today i have been testing push mail, looks like Microsoft knows this issue too so whey they only boost up to HSDPA when checking mail with server, once it's finish, it's drop to 3G again. So direct push is ok.
But there are some other third party software (most of them!!) which doesn't do this, therefore you will just simply miss the call.
e.g. If you are browsing internet, while the internet is loading, you will just miss all your calls.
I kind of need someone with vodafone to confirm this behavior, but i am 80% sure i am correct, therefore i will call them up tomorrow and see what they say.
Wich part of Vodafone has got HSDPA??? I thought it's standart UMTS (384kbps)???
vasil said:
Wich part of Vodafone has got HSDPA??? I thought it's standart UMTS (384kbps)???
Click to expand...
Click to collapse
quite a lot of places got HSDPA already, most of the London at least, i did a speed test yesterday and i am getting 1.3Mbps (1300kbps). very fast indeed but useless if we keep missing calls......
wu5262 said:
Ok guys, i need some of you to do a bit of testing for me, here is my problem:
When my 3.5G (HSDPA) Data connection is active I cannot make or recieve phone calls.Any incoming call goes straight to voicemail and any number I dial the phone will display "call ended" before it even starts to to ring. The minute I close the data connection the phone works again.
I have done a lot of searching on net and in this forum, some other member are having the same problem. But i think it's only with vodafone, T-mobile don't seems to have this problem. What T-mobile do is to disconnect the data transfer ot reduce it to only 3G while calls comes in. BUt vodafone don't do that, it receive phones ok when in 3g mode but no ok in 3.5g at all. It doesn't switch itself.
So please if you have a vodafone and Athena, try go to Internet, and make sure it's 3.5G, while data is transferring, make a phone call to yourself and see whether it gone through. Please can t-mobile user test it and confirm it does work on your device as well. Thanks
If it's vodafone's problem.....i will have a very long call with them tomorrow then
p.s. Please make sure you test it "WHILE" the data transfer is active, so e.g. open up a site in Opera, while is loading, make the phone call, i am guessing for T-mobile, it should switch from 3.5G to 3G to enable to call comes in, but for Vodafone, it won't do that and will just reject the call!!!
Thanks in advance!!!
Click to expand...
Click to collapse
I have tested on 3 Hong Kong using 3.5G, I was downloading a 6M file using ftp client and the transfer rate > 100kByte/s (so it must be using HSDPA) and the indicator shows "H" instead of "3G", I made a call from my other phone and it rings! So i guess it's the Vodafone problem instead of U1000.
Tommy
tommy1971 said:
I have tested on 3 Hong Kong using 3.5G, I was downloading a 6M file using ftp client and the transfer rate > 100kByte/s (so it must be using HSDPA) and the indicator shows "H" instead of "3G", I made a call from my other phone and it rings! So i guess it's the Vodafone problem instead of U1000.
Tommy
Click to expand...
Click to collapse
yes i am guessing the same too.......thanks for your help, now we just need one more Vodafone UK user to confirm this.
slightly ot but I wonder is vodafones issue simliar using the three (uk or ie) networks?
ANyone using Advantage or similar model with the three HSDPA network?
it would certainly give me food for thought before my purchase..
weareborg said:
slightly ot but I wonder is vodafones issue simliar using the three (uk or ie) networks?
ANyone using Advantage or similar model with the three HSDPA network?
it would certainly give me food for thought before my purchase..
Click to expand...
Click to collapse
i doubt Vodafone is the only one, basically is to do with their network hardware and protocol, if other company uses the same, you will be in the same situation with me. I have heard member here report that some operation in Asia and Europe acting the same, so once again, it's not just Vodafone (i think).
Same problem with Three in Sweden...
and I´m pretty sure that they are using Ericsson equipment here. Anyone else in Sweden with the same problem?
TYTN Black 2.5
Radio 1.41.00.10
Buzzing
I have a Hermes through Vodafone and recently flashed with AKU 3.31 so can tell when I am connected via HSDPA. I am using FlexMail 2007 and I have been having the same problem that you describe. Some of my incoming calls go straight to voicemail, paricularly since with the IMAP IDLE function on FlexMail is frequently connecting. When I try to make calls I end up having to close FlexMail before making a call. By coincidence, I just contacted T-Mobile yesterday, and I found two other reasons for switching: 1) Web 'n Walk -- up to 1GB per month under their fair usage policy, the closest I have found to unlimited data in the UK and at a very reasonable price, and 2) Business One Plan which allows you to use your inclusive minutes for calls to North America and Europe for no extra charge. The only downside that I can see with switching to T-Mobile is that sms bundles are separate, while with Vodafone they are included in the data packages, and I will lose access to Vodafone Text Centre, which allows me to send sms messages from my computer within Outlook over the internet (and interestingly counts these as sms messages sent from the UK no matter what country I am in, so all messages I send using this are included in my bundle).
I can now confirm now at least all Vodafone UK customer will have this problem when they connect to HSDPA, i have cancell my contract with them, i pay my remaining contract fee which is £320 ! I wrote a 3 page long letter to them explaining this to them, the reason of my cancellation is because their network issue, not mine. I have phone them a lot of times as well, the answer i got is "don't use 3G then, just use GPRS!".
Anyway, i am now on T-mobile network, and the above problem is no longer here, i connect to HSDPA, if calls comes in, the network will drop itself to 3G for me to answer the phone, then up again to HSDPA once the call is finish, sweet!
wu5262 said:
I can now confirm now at least all Vodafone UK customer will have this problem when they connect to HSDPA, i have cancell my contract with them, i pay my remaining contract fee which is £320 ! I wrote a 3 page long letter to them explaining this to them, the reason of my cancellation is because their network issue, not mine. I have phone them a lot of times as well, the answer i got is "don't use 3G then, just use GPRS!".
Anyway, i am now on T-mobile network, and the above problem is no longer here, i connect to HSDPA, if calls comes in, the network will drop itself to 3G for me to answer the phone, then up again to HSDPA once the call is finish, sweet!
Click to expand...
Click to collapse
Glad you got it sorted Wu & welcome to the T-Mob club.
How do i use HSDPA?
I get GPRS/3G as options in the connections box...
I only ever see 3G in the icon at the top.
Im on t-Mobile UK
I've got a T-mobile UK touch plus.
Currently, if I am using the data connection then all incoming voice calls are being sent to voicemail. This occurs with a GSM connection, which is part of the spec and is fine, but also with the 3G connection, which should allow the incoming voice call through. I have spoken to t-mobile and they acknowledge this problem and say they are working to fix it.
Is it likely there will be a fix for this? Is there a radio ROM already available that fixes the issue?
Sorry if this has already been covered - I searched with a pretty wide variety of terms and didn't find anything conclusive.
I have the same phone, same network... and it still rings while i have the "3g connected" symbol (3g with two arrows pointing left and right) showing.
Havent tried while connected to GPRS cuz im not sure how to force it into G mode while im near a phone.
Sorry, I should have been clearer - the phone will ring with an unused 3G connection, but not when data is actually being sent/received. This is the behaviour you would expect from GSM, but the 3G spec should allow voice calls through regardless of data - my Vodafone v1605 has no problem with this. T-mobile say it is the device not the network, I just wonder how likely I am to get a fix for this? It could be a problem with activesync using the data connection quite frequently.
A good way to test it is with google maps, or something that will maintain a constant connection, then call your phone. 3G should put the call through, but it will be rejected to voicemail instead.
FYI to put into GSM mode;
Settings>Phone>Band>Set top option to GSM, leave bottom on Auto
same problem here. but i only expreienced that randomly
i know that gprs can not handle data and voice. but 3g should, right?
Yes, 3G should be able to run voice and data streams simultaneously without any problems. I'm surprised there is not more interest in this because it seems to be a pretty major problem with the device if you cannot receive calls while browsing or otherwise using the data connection.
Me too
I experienced this too. I have an direct HTC Touch dual rather than the t-mobile branded version but I'm using a t-mobile sim. I use Exchange Activesync and am missing calls all the time.
fwiw, i experience the same with a Nokia e61 on 3-AT network with exchange active.
It seems that T-mobile have fixed their network today to allow calls while using data. Bonus.
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?
Click to expand...
Click to collapse
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
Click to expand...
Click to collapse
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.
Click to expand...
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.
Click to expand...
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
Click to expand...
Click to collapse
It doesn't. We already stated that above. anaadoul and me already stated that above.
Hello,
the HTC support tells me, that you can´t surf (with and without tethering) and make a phone call at the same time.
Is there a hack or patch to do this at the same time?
P.s. Somewhere i saw, that iPhone can do this with a hack.
You can do it if you're on 3G or WiFi.
If you're on GSM you can't do it.
That sounds great!
But when im on gsm in internet, does i still get incoming calls?
That is very importent for my business...
No, only on 3G. GSM supports only call or data, not both at the same time. If data is connected but not actively transferring stuff, incoming calls will go through, but if you're downloading at that moment the call will just sound busy/go to voicemail. That's a network limitation.
kilrah said:
No, only on 3G. GSM supports only call or data, not both at the same time. If data is connected but not actively transferring stuff, incoming calls will go through, but if you're downloading at that moment the call will just sound busy/go to voicemail. That's a network limitation.
Click to expand...
Click to collapse
Actually it is not a network limitation.
There are Class A devices out there that can handle simoultaineous voice and data sessions.
GSM is not a network connection like GPRS and other. GSM is like old 56k modem which dials up a number and holds the line. Therefore, you cannot connect to GSM and make a call. This is a network limitation, not related to phone (unless you have 2 sims).
GPRS, EDGE are extensions of GSM... and today's general use of "GSM" includes those... GSM = not 3G