Database Users

Missed calls when I have an active UMTS connection

Hi everybody
I have recently started to use "push" email on my XDA Exec and so my data connection is active all the time. I have found that when I am in a 3G coverage area, I occasionally miss incoming voice calls (about one in five got missed in my testing today). The caller gets diverted immediately to the voicemail system. This does not occur if I don't have a data connection active, or if my data connection is a GPRS one.
I have contacted T-Mobile to ask about this and they tell me that it is not possible to receive a call when there is 3G data being transferred. I am not sure about this since I thought that one of the advantages of 3G over GPRS was that it allowed a data connection and voice connection simultaneously. Indeed even a GPRS connection gives priority to an incoming voice call so that the call can be received and the data connection gets suspended for the duration.
Does anyone know how to make the 3G data connection not prevent incoming voice calls.
My phone is an O2 XDA Exec with radio version 1.09 and with a T-Mobile Web'n'Walk SIM.
Thanks in advance for any help.
Mark

I'm sorry I don't know the answer, but I can tell you I have the exact same issue (O2 Exec with T-Mobile Web 'n' Walk SIM). I got fed up with missing practically every call. ..instead I get voicemail a few minutes later. I'm stopped using push e-mail with a hosted Exchange account and I've reverted to checking via POP every 15 minutes or so, to see if that helps.

Thanks for the confirmation that it isn't just me, Izzard-UK.
I have done a bit more testing and discovered a few more things. It seems that I always receive the call if my phone hasn't received a call for a while, but once I have received a call, I can't receive a call for several minutes afterwards(I don't know how long but it is in the tens of minutes). And just to confirm, this is only if I have a UMTS data connection at the same time. Without the simultaneous data connection, all is well
Izzard-uk, can you confirm whether this "first call works - subsequent calls don't" behaviour is the same for you as well.
For me, the temporary fix is to send my phone to "GSM" instead of "auto" so that it uses a GPRS data connection instead of UMTS. Of course, data transfers are much slower but I can live with that!
I am going to try upgrading my radio ROM tonight (to 1.13) to see if that makes any difference.
Mark

I have tried upgrading to radio version 1.13 but it made no difference.
Does anyone have any other suggestions?
Thanks for your help.
Mark

Hi Guys,
I use TMC option of TomTom on my Universal with data connection always on (essentialy UMTS 3G) and email checking every 30min and I can receive calls without any limitation... I did it with 1.09 radio rom and actually 1.13 radio rom.
Everything is ok for me. But I noticed that on UMTS (not happening on GPRS only), signal indicator is set to 0 when I wake up the universal and get real signal strenght after few seconds. But I can receive call any time...

When i was with orange and had a 3g signal i could surf and talk, i also though this was the normal with 3g....
How ever on t- mobile it seems not my phone is set to check email every so often so im always getting missed calls where they dont get through when the mda is checking emails so ive had to lock it to 2g annoyingly enough

I have an O2 contract as well as T-Mobile and if I do a test with my O2 SIM in my Exec I don't see the missed calls problem at all. It seems to be only on T-Mobile that I have this problem.
Unfortunately, as I said in my original post, T-Mobile say that it isn't a problem because simultaneous voice and 3G data isn't supposed to be possible!
Argh!!!!
I suppose I will have to put up with it since their Web'N'Walk deal has no competition at the moment in the UK.
Mark

whos says its not actually possible out of interest?

I raised this as an issue with T-Mobile Customer Services. They asked me to make a list of when missed calls happened so that they could trace the calls and determine the reason. I did this and sent them the details - out of a total of 19 test calls over a 24 hour period, 5 had gone straight to voicemail even though I had a perfectly good signal at the time.
But the annoying thing is that, after going to all this trouble, they just sent me an email by return saying that it was not possible. I have quoted the email below.
Hi Mr Burgin,
I have just received feedback from our engineers who have tested out the problem you have described. The has advised me it is not possible to receive a call whilst transferring 3g data. I hope this sheds some light on the problem you were receiving.
Regards....
Not a very satifactory answer, in my opinion.
Mark

Hmm, no that's rubbish! Clearly other operators can manage it. You just know this is a checkbox in some management software somewhere:
"Allow telephony during UTMS transfer? Yes/No"
I've gone back to my HTC Wizard. Yeah, smaller screen and no 3G. ..but it feels a lot snapier than the Universal I've been using. And I can receive calls now, too!

Mark, I've had a thought. Do you (like me) have an old 5v T-Mobile SIM.
These SIM’s can be identified either by SIM serial number 893044 05 or 16 – up to and including 893044 50. SIMs with serial numbers 893044 52 and above will be ok- anything lower is likely to be a 5v.
There was an issue when I 1st got my MDA Pro. It had to be network unlocked by T-Mobile for it to work with my SIM. Is it possible that the ROM update as "re-awakend" this problem?

Dopod 810/Trinity GPRS problems

I have two Dopod 810 running on Optus network. One running windows5, the other windows6 Dopod release. BOTH phones have the same problem of repeatedly disconnecting the phone call if the phone settings are
Network …… Auto
GSM/UMTS ..Auto
So to correct the problem Optus told me to change the the settings too
Network ……GSM
GSM/UMTS ..GSM(900+1800)+UMTS(2100)
This would stop the drop out, but I now don’t have 3g network, hence no MMS, video conferencing, web access is at dialup speed.
I had the Optus service department take both phones and they found they could not replicate the problems, installed the windows 6 pro upgrade on them and sent them back. Guess what, I still have the same connection problems. Put the phone settings back to the second settings above and have a phone back, but none of the 3g.
Any ideas why and what I can do? The only thing I can think of is to get Optus to replace the sim cards and see if that helps?
Ohh and this has been a problem since the phones were new.

I have the same problem too in indonesia Telkomsel network.
a incoming and outgoing call always drop or disconnected. and really difficult to setup a call. and very often my voice couldnt be heard.
anyone can help me?this is network failure or handset failure?
thx in advance

Calls sent to Voicemail if Data is Active

I have an unlocked Hero on the o2 network in the UK.
I have been noticing that a lot of calls are diverting straight to voicemail without ringing. It appears that this occurs while in a 2G Network Area.
2G Networks cannot cope with both Data and Voice calls at the same - so if, as you would expect on a "Smart Phone", a data connection is active - i.e. Push Email, Updating Twitter, Facebook or streaming Radio - then you are unable to receive calls!
This is not an issue on a 3G Network.
I have read that a phone should be able to terminate the Data connection if a Phone Call is coming through. It would appear that the HTC Hero does not do this - incidentally I have read of similar issues on the iPhone.
Has anyone found any solution to this? Is there anyway to ensure that the Data Connection IS terminated when necessary?
Thanks in advance.

bump for the Sunday crowd...

It's not the phone that terminates the connection, it's the network. When it knows it needs to route a call to a phone which has an active data connection, it should terminate the data connection, or at least suspend it (HTC's are capable of this if commanded) and then route the call through.
Networks that route through to voice mail without ringing are not doing this, they are simply routing straight to voice mail without bothering to try and contact the phone.
Nothing you can do about it apart from keeping data turned off whenever you are not using it.

Strange Network Problem HD2

I bought unlocked, sim free HD2 inserted the sim of my usual Mobilink network the phone wizards automatically configured the setttings but to my strange I cannot dial or receive phone calls, I am receiving and sending sms perfectly the phone GPRS working alright tried different methods of changing band but nothing is working to dial or receive voice call. In order to check if there is problem itself with the phone I tried different network (Ufone) sim and the phone is working perfectly without any problem so I am stuck that I cannot use my network which I normally use and I dont want to switch network, if somebody can help to fix this problem.

Incoming Phone during data connection

With my older phone, if I have a GPRS data connection, incoming voice calls will be rejected (busy). I was told it is the same with all phones.
Can HD2 make or accept a voice phone call when it has a GRPS connection? Or an HSPA connect? With the My Location, Weather, and Direct Push, I can neve tell when my phone has a data connection. Does it mean I may be missing calls all the time?

I have no problems with my telco. They will "downgrade" my data connection whenever a call is coming thru.

Nope - works fine for me. Will be using MSN and then a phone call will over ride it

alex fung said:
I was told it is the same with all phones.
Click to expand...
Click to collapse
Somebody didn't know what they were talking about! You've been misinformed mate

alex fung said:
With my older phone, if I have a GPRS data connection, incoming voice calls will be rejected (busy). I was told it is the same with all phones.
Click to expand...
Click to collapse
what phone would do that? You wouldn't happen to be with Verizon before, would you? My gf has a blackberry on verizon and whenever she's using the net incoming call would be rejected. I don't know any gsm phone would do that. I've had 5-6 GSM phones and they would allow incoming call and suspend your current web until the call ended.

Well, voice calls are made on a certain frequencies and data connections are made on others.
Ex: in my country the data connection is on the 1900/2100 freq, while the voice calls are on the rest.
So it should never be a problem. I believe its also the ability of the phone to use different freq for different tasks.

Thanks. I can now use the data connections without worry

Why not you try yourself. COnnect to data constantly and make a call to your number. What will happen...?

3G and GPRS/Edge won't block calls. But you can still use old fashion data-call. While I doubt any provider would provide data connectivity this way, I can't rule it out.