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.
Related
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?
Hey all,
As far as I understand; when you are on GPRS you can't make a call or receive because it ties up the line.
Does the same apply with EDGE? I don't think it does with 3G but my network just went EDGE over GPRS (o2) so I wondered about the 'new' technology.
Thanks for the advice
it dont apply to any of them unless thats a limit of the phone company one is connected because they have limited equipment
Rudegar said:
it dont apply to any of them unless thats a limit of the phone company one is connected because they have limited equipment
Click to expand...
Click to collapse
I always thought it did; I used to be Vodafone UK; I started on one of there GPRS phones & couldn't attempt or rec calls, I then moved up to 3G, again on Vodafone & I could run 2 sessions of them easy. It would't be to do with the 3G networks having there own network settings? for example, the 3G phone would give me the option to connect to 2G or 3G when I first turn it on or change networks.
i use GPRS it dont block anything for me
only tech which really block 100% is the old callup modem data calls
which also only operate at something like 9600Boud
GPRS Data Call
Hello, i´ve been trying to find an answer to a problem while calling through GPRS with VoIP using WM6VoIP.cab released here in xda-developers. I can make the call, it rings in the other side, but no sound for either users... There is no sound at all, like if the phone was off. On the other hand, i use the same system to call while connected to a WiFi Lan, and it works perfectly! What could be happenning to me? I use Vodafone, and i´ve also tried it with Yoigo which uses Vodafone network...
I´d really appreciate your help!
tildesley said:
Hey all,
As far as I understand; when you are on GPRS you can't make a call or receive because it ties up the line.
Does the same apply with EDGE? I don't think it does with 3G but my network just went EDGE over GPRS (o2) so I wondered about the 'new' technology.
Thanks for the advice
Click to expand...
Click to collapse
GPRS and EDGE are basically the same thing with respect to blocking voice calls.
Old GPRS implementations (can't remember which class - wikipedia is your friend) would block incoming calls - but newer implementations shouldn't. The only thing is when you have active calls, GPRS is suspended.
But I heard that the radio firmwares and equipment of the telco would make a difference.
When I had my Treo 750, I always had a GPRS connection. If there was any data activity going on, incoming calls would go to voicemail. Very irritating, especially when using Direct Push for email.
With my old Blackberry Pearl, and my new Tilt, I always have an EDGE connection, and do not have the issue.
Hope this helps...
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.
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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.
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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.
Hi,
I'm off on my hols soon and was wondering how to stop all data connections apart from sms/ mms and calls?
Cheers
Its not quite the same thing, but we live in the South East of England and had a trip to the coast yesterday. My phone picked up a French carrier and then I got a load of messages from TMobile (my normal carrier) telling me how much it was all going to cost.
I tried searching on available networks but couldn't find TMobile uk. So for a few hours I wasn't able to use my phone till we were a bit further inland again and I could reconnect to the TMobile service.
Any idea how to force the phone to stay on your providers network and if not how to avoid incurring silly charges when my monthly plan is all inclusive.
Well I know for SMS, if you go into Settings, there's a check box that says "Roaming Auto Retrieve", just leave that unchecked. Not sure if that's what you're looking for?
if you want stop everything but want use as PDA then just put in aeroplane mode, every communication will be stoped
ijob said:
Hi,
I'm off on my hols soon and was wondering how to stop all data connections apart from sms/ mms and calls?
Cheers
Click to expand...
Click to collapse
If it's like mine, the phone should not roam on data while you're out of your own network. You can confirm this though by going to SETTINGS-Wireless Controls-Mobile Networks and check if Data Roaming is turned off. It should be, and if it is, your phone will not use internet while outside your carriers coverage area, but you can still receive calls and texts perfectly fine (and wi-fi will still work too for data without charge)
You can stop all data.. But it will also stop mms. Sms will be fine though. Settings, wireless control, mobile networks, un check MMS and data.
Sent from my x10 using XDA and swype.
SMS and MMS are free anyway to recieve as the OP already posted he doesn't mind these working abroad, i just got back from the dominican Republic and as long as you untick data roaming in "Mobile network settings" then your good to go
I own a SM-G935V that I'm using with Tracfone. It's running 7.0/Nougat, patch level 4/1/2017. On another forum, here's what I wrote:
I've run multiple tests on this and it turns out that if I reboot my phone, I do not get reconnected to cell service unless I make an outgoing telephone call.
The reason why I didn't notice this is because I use Google Voice for about 99% of my SMS communication. So here's the test I ran:
1. Reboot phone, wait until it comes back online and I have bars and 4G on my status bar
2. Call my phone from another phone -- goes straight to voicemail
3. Send SMS via phone's SMS -- goes to pending and is never sent
4. Make an outgoing phone call not using Google Voice but my cell network resolves the issue
I've changed the network from Global to LTE/CDMA, but it makes no difference. I've also turned off the wifi and tried to see if I would be denied for data access, but that is not so -- I can visit websites without any issue. But doing that DOES NOT reconnect me to my cell network. So it seems that since I'm using 4G/LTE for data, that authentication is separate from the cell authentication.
I got a response from another user that's experienced the same issue. He said he had no problems with Verizon prepaid SIM but the same exact thing with a Tracfone Verizon-piggybacked SIM. His solution was to push an unbranded firmware on it.
I'd rather not go this route if I can help it since the phone works well and this is the only issue I've encountered. Any suggestions?