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?

cdma call routing - cloned phones

Hi,
Could someone provide me pointers with how actually a incoming call is routed on the cdma network.
What I want to figure out is issue with cloned phones.
Now when I have my cloned phones connected to the same tower, they both ring when an incoming call comes in?
But when they are connected to different towers only one rings, what determines which one does?
Is it possible to have only one of them ring i.e. the other ignores any incoming calls?
Maybe have the secondary phone not show itself on the network, unless it needs to make a call (voice or data)?
What about call waiting? When another incoming calls comes in when one is in session, would prefrentially go the the phone which is active or could it go to either?
Has anyone any experience of extensive testing of having two (or more) phones on a network?
- Jack

Work-Around Solutions to the T-Mobile Voice or 3g Data Problem

The T-mobile tab will allow you to use voice +EDGE or 3g/H data (US version, some report complete functionality in China and Isreal). The current work-around is the Roto Modem Switcher solution (brilliant!)
If you stay on the 3g/H modem, some have suggested google voice, voip, etc.
What can you do if using a voip service so someone receiving a call can see your cell number? What are your solutions so you don't have to reflash your tab, or switch sim cards between phone and tab?

I tried the skype app from the market, but no-go. Skype uses wifi in the US.
Fring works, but your caller won't see your number. They see 111 as your caller id, so they can't call back.
Google voice shows your google number not your cell number.
ooVoo wasn't any better.
What add on service will show your cell number, and allow people to return the call? And do this on 3g/h?

rangercaptain said:
I tried the skype app from the market, but no-go. Skype uses wifi in the US.
Fring works, but your caller won't see your number. They see 111 as your caller id, so they can't call back.
Google voice shows your google number not your cell number.
ooVoo wasn't any better.
What add on service will show your cell number, and allow people to return the call? And do this on 3g/h?
Click to expand...
Click to collapse
try the attached, this version will work both wifi & 3g, but no video. i've been using it to receive/make calls using tmobile 3g.

xpgroup said:
try the attached, this version will work both wifi & 3g, but no video. i've been using it to receive/make calls using tmobile 3g.
Click to expand...
Click to collapse
here's the file

Thank you. I will get after this and let you know how it works. I found something else in the market called Vopium. It works pretty good.

Something good to know..but this option is to get a new mobile number so not sure if you want to do so
http://www.wired.com/epicenter/2011/01/google-voice-porting/

[Q] ATT Quantum - No incoming calls

Hi there,
Just a few days ago i bought a LG Quantum, everything seem to be working fine until everyone told me why i didn't pickup their calls. I can make calls, the 3G it's working, I can receive sms, Wifi and BT working too.
It's SIM unlocked and working on Telcel Mexico (UMTS 850)

have you tried to turn of your mobile data connection?
for edge and gprs: they are only capable of one thing at a time data or calls.
3g already does both.

Yeah I tried that, I did downgrade to NoDo and now just shows "No Service", for a few seconds have service, I tried with another providers and shows the same behavior. Its not enough with the SIM unlocking? Maybe it doesnt have the XML of the provider or I must debrand? Anybody have an idea?
For the record, now im on movistar, with the sim working on a Samsung Focus shows "movistar", on the Quantum shows "movistar-movistar"

VoLTE working when using Bluetooth but not when dialling directly on the phone

Hello,
I have got the odd situation with the SM-G950FD (Singapore non-branded XSP CSC) living in the UK and using the Vodafone UK network whereby I am unable to make VoLTE phone calls although I have got the VoLTE function enabled. I first thought it was because of the network, however I came to notice that I am able to use VoLTE to make phone calls when I make them from my car over Bluetooth. It is of course the same mobile phone, and I can confirm VoLTE use as the display continues to show 4G+ or 4G whilst on the phone instead of jumping to H+ or H.
It seems as if phone calls over Bluetooth must be triggering a different call initiation routine compared to making a phone call using the dialler on the phone itself. Has anyone encountered this before and has anyone an explanation for this? How can I fix this so that I can VoLTE phone calls from the phone directly as well?
Thanks
Wolfgang