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I just switch to 3G instead of 2G. I want to experience the high speed internet suffing via my handset.
But I found the problem is that the phone call can't came in if I using the 3G data. Not even transfer to security services. Just a "Busy tone".
Check with the service provider and they are now checking with their technical dept to see if they can found the problem.
They said that the call should be able to come in because the phone call channel is different to the data channel. :roll: :?:
Anyone experience the same problem?
I experienced the same problem with my CHT9000. You may change the setting to GSM then call can come in when you using GPRS but you can't enjoy the high 3G speed on data transmittion. Anyone has better solution?
complicated issue; can be the same with GPRS/EDGE ; I made a lot of research read below;
http://forum.xda-developers.com/viewtopic.php?t=54738&highlight=
It is interesting. I don't have this kind of problem while I am using GPRS. But it happen to my new network provider (3G).
Lucky you then :lol:
At least you have GPRS/EDGE working and as a result it is absolutely a network provider issue.
I talked every detail with a guy in my Net. Op. and seems can be solved by "tricky switching something on" but they could not make me believe that this is not thier mistake. Because Class B phones MUST suspend the data flow and accept incoming calls for the technical point, only class A phones (no retail ATM) can make data flow and GSM talk at the same same.
GPRS is 2G, EDGE is 2,5G and same tecnique as 3G, only speeds are lower, so I beleive if u use 2G suspend while incoming calls your Net.Op. can solve the problem if they want :wink:
I have this strange problem with my vario II.
I am using Tmobile GPRS on both 2g and 3g network, If I am using the 2g phone works if If am using 3g phone doesn't work if I call it, the phone rings but doesn't alert me. The most annoying problem I am having is the phone switches between 2G and 3G if I am in a call the phone goes silent can't hear anything the display shows the call as connected and around 5-10 seconds later the phone drops call drops. This happens even if the data connection if not active.
What is the deal with that? anyone else have this problem.
Phone band settings are below
network type
Auto
GSM
GSM(900+1800)+UTMS(2100)
I've just discovered the same problem with my orange branded tytn, I'll be phoning them later to ask what they can do about it.
xxnoelziexx said:
I am using Tmobile GPRS on both 2g and 3g network, If I am using the 2g phone works if If am using 3g phone doesn't work if I call it, the phone rings but doesn't alert me.
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Works perfectly on T-Mobile UMTS for me. I did flash the Dopod 838Pro ROM though.
will flash the dopod rom in the morning. I am currently using the imate rom, and the tmobile rom the device shipped with had to many slow downs so it had to go. if this fixes the drop out issue I will be happy if not the phone will be in its box till a rom update. got the phone cheap so don't really mind. nice phone/pda apart from this issue in my line of work can't afford to miss or drop calls.
so is this a hardware or a software issue then?
No harware problem, it is absolutely software issue. Read my posts above and the links I gave
No problems here I'm afraid.
Voda v1605 running the Voda Blackberry Client, so either 3G or GPRS (where no 3G available) on all the time. Calls and SMS received perfectly.
Only issue I have is when using 3G, unlike home wired broadband, I cannot use multiple applications through the single 3G connection (e.g. Blackberry client on and surf too)
Steven
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.
I read in one of the threads (can't remember where) that someone mentioned you can't receive a call if you are 'ACTIVELY' web browsing over a 'G' signal. I've tested this today and found it to be true as that is the signal I have in this office. If you come out of Opera (with it still in the background) it will connect but when you go back in and open a new link you again will not be able to recieve calls.
Anyone Know the reasons behind this, bit of a pain if you ask me.
its the nature of GPRS i am afraid... its the same on any mobile if you are actively browing using GPRS.
GPRs is only capable of making one connection at a time.
You dont get this issue if you are say browsing with 3G or HSPA.
question
Hi, I have a question regarding this. If you use GPRs and enable push email, automatic frequent weather update, twitter update etc, does that mean you won't have much chance to receive any phone calls/text messages?
luffyp said:
Hi, I have a question regarding this. If you use GPRs and enable push email, automatic frequent weather update, twitter update etc, does that mean you won't have much chance to receive any phone calls/text messages?
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was just thinking about that myself... im not 100% sure as it would depend upon the amount of time your GPRS data connection is active.
As a matter of fact, GPRS as a standard is perfectly capable of handling simultaneous voice and data calls. There are different classes of GPRS devices varying from doing only one thing at a time to simultaneous voice and data. Most phones, including HD2, are, IIRC, Class B devices, meaning that they will pause data transfer during voice calls. Whether this will actually work or not, however, depends on your network - your operator may not provide enough slots for this. If this is the case, you will lose incoming calls occasionally during active data transfer, and there's nothing you can do about it apart from not using data or switching to another provider.
vangrieg said:
As a matter of fact, GPRS as a standard is perfectly capable of handling simultaneous voice and data calls. There are different classes of GPRS devices varying from doing only one thing at a time to simultaneous voice and data. Most phones, including HD2, are, IIRC, Class B devices, meaning that they will pause data transfer during voice calls. Whether this will actually work or not, however, depends on your network - your operator may not provide enough slots for this. If this is the case, you will lose incoming calls occasionally during active data transfer, and there's nothing you can do about it apart from not using data or switching to another provider.
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Thanks, i can confirm that it does not work with o2 tried and tested
With 3G connected and while in a phone call I can't update the weather during the phonecall. Vodafone.
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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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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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)
Hey guys, new to the xda forums after lurking here for the last two weeks after getting my N4.
To fully describe my situation, I'm still in college and on most college campuses, signal is very shaky while strong Wi-Fi exists everywhere. Therefore, I initially thought GV + VoIP would be a great option if I dont have signal. However, I'll also be traveling a lot this year in the summer and in those cases, I'll be relying on Tmobile data (yeah...not sure how reliable that'll be in a lot of areas in the U.S.) so I'll probably want to call using T-mobile signal. Being the phone noob that I am, I'm unsure if GV + VoIP will allow me to use the wi-fi in campus to make calls during the fall + winter and also allow me to still make calls with the Tmobile minutes I have in the summer when wi-fi is shaking and I don't really want to trust in Tmobile data strength in a lot of rural U.S. areas.
So TLDR: does GV + VoIP have an easy option to switch between using VoIP with wiFI and disabling VoIP and using carrier minutes to call?
Thanks in advance and sorry if it's a stupid question haha
Use grooveip. You can try sipdroid also but grooveip is better I think.
A thread with a lot of good info....http://forum.xda-developers.com/showthread.php?t=1646755
Use groove ip and set it to only use while on Wi-Fi. Problem solved
Sent from my Nexus 4 using Tapatalk 2
I normally use Talkatone (a Groove IP alternative better IMO) and turn on airplane mode and turn on WiFi. I have T-mobile but I only use it as a backup for when I find I am not getting my WiFi signal for the hotspot I always carry with me. So if I need to make a T-mobile call I just turn off airplane mode and use the native dialer to make the call.