Develop Bugs

Query: Simultaneous GPRS data transfer & Voice call

I have an MDA C3. When web & walk is transferring internet Data and a call comes in, the phone does not ring. It goes directly to the voicemail.
T-Mobile customer service tell me that this is correct as you can either transfer internet data or make a call.
Is that right? I thought that was with WAP which is analagous to dial-up. Surely GPRS is analagous to Broadband.
Anyone else want to try this:
Go to Web & walk home page. Attempt loading up the guardian page (This will take a while). Whilst this is loading, call your phone number and see if it rings or goes direct to VM.
I spend lots of time browsing so I must be losing lots of calls!
Feedback greatly appreciated.

From what I have heard only UMTS devices can support simultaneous voice/data.

Yes - but not GRPS that uses GSM band instead of UMTS.
However, some devices have troubles keeping the data link active when a call comes in.

I am having the same issue (also on T-Mobile UK).
Then IE is running or AS is downloading my mail (I use direct push) all my calls go straight to voicemail.
This is worrying as I just moved over to T-Mobile for the web n walk package to allow me to have instant e-mails. This is a pain if it means I miss calls whilst my mail is downloading.
You'd think that the chances of the 2 coinciding are slim (I don't get a lot of mail, maybe 10 per day) but the wife has already complained 3 times since Friday that she went straight to voicemail, and each time it was exactly as i got a new mail.
Is this a limit of GPRS, the Orbit or just T-Mobile?
Thanks
Dae

I was surprised too... Thats why I posted the query. I thought my phone and/or SIm were faulty. But T-Mobile tell me thats how its supposed to work.
With W&W and Email, Its really hard for someone to get through with a voice call. It was worrying for me as I tend to browse the net whenever I am waiting around. This means that when I am on the bus surfing, no one can get through to me!!
Surely if there is a limitation, then the phone should give precendence to the Voice call. After all, you can pick up your emails or surfing where you left off.
I would really be interested to see if this is a T-Mobile only problem.

No itschase is spot on.
It's not a t-Mobile problem, it's the same for any GSM based network.
Only 3g (UMTS) phones can do data and voice at the same time. No matter what network you are on.

I have just run an experiment in the office as follows:-
Me (artemis with v3 black and blue) - Voicemail when data active
person 1 (MDA compact III - v3 black and blue) - Voicemail when active
person 2 (hermes) - no Voicemail when active.
We are all on t-mobile UK, and therefore it doesn't look like a network issue, but maybe a ROM problem?

daesimps said:
therefore it doesn't look like a network issue, but maybe a ROM problem?
Click to expand...
Click to collapse
What problem? Everything is working as it supposed to. If it's so important to you. Go buy a 3g phone!

I now fully appreciate that 3g phones are the only ones to support this type of behaviour.
I was trying to be helpful and post the results of my test as at that point I didn't realise that only 3g phones worked as such. I was lead to believe this by wikipedia:-
"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. Most GPRS mobile devices are Class B. "
Obviously this is not the case.
Bring on the HTC Kaiser!!!

Gajet said:
What problem? Everything is working as it supposed to. If it's so important to you. Go buy a 3g phone!
Click to expand...
Click to collapse
I incorrectly assumed that whilst browsing, if a voice call comes in, the phone would give priority to the call.
If I had known what I know now at the time I signed my 18M contract I would have bought a 3g Phone! Its just annoying that i'm stuck with it for another 12M. T-Mobile push the fact that they have set the internet free... but what they fail to get across to everyday users is that its "AT THE EXPENSE OF THE VOICE CALLS"

Because T-Mobile forced you to buy one of their 2.5g phones rather than one of their 3g phones?

I have no problem receiving phone calls while browsing the internet on the P3300.

cduijker said:
I have no problem receiving phone calls while browsing the internet on the P3300.
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Click to collapse
Neither have I to be honest, the issue only arises while you are actively downloading data. However once the website has loaded, you are free to accept calls again whilst still looking at the site in the browser.

Gajet said:
Neither have I to be honest, the issue only arises while you are actively downloading data. However once the website has loaded, you are free to accept calls again whilst still looking at the site in the browser.
Click to expand...
Click to collapse
As a test I started downloading a dummy 32MB testfile on my P3300 (from speedtest.bbned.nl) and I called my mobile with another phone.
There was no problem; I received the call while downloading the file.
Maybe it depends on the operator? I am in Holland on T-Mobile

daesimps said:
I now fully appreciate that 3g phones are the only ones to support this type of behaviour.
I was trying to be helpful and post the results of my test as at that point I didn't realise that only 3g phones worked as such. I was lead to believe this by wikipedia:-
"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. Most GPRS mobile devices are Class B. "
Obviously this is not the case.
Bring on the HTC Kaiser!!!
Click to expand...
Click to collapse
Hi,
It's not enough to have a class A (2G) device, but also DTM (Dual Transfer Mode/Simple Class A) support has to be active in the specific network, otherwise only 3G device on 3G network will provide Class A (simultaneous voice & data).
In fact, there are quite many models from Nokia during last year that support DTM, but as already mentioned, it's not enough.
FYI,
Zohar

cduijker said:
As a test I started downloading a dummy 32MB testfile on my P3300 (from speedtest.bbned.nl) and I called my mobile with another phone.
There was no problem; I received the call while downloading the file.
Maybe it depends on the operator? I am in Holland on T-Mobile
Click to expand...
Click to collapse
Is that an EDGE network ?

I got the Artemis with PV Black&Blue v3 ROM.
I can receive calls while pages are loading in IE.
I think this is a provider problem.
The phone provider has to intercept your GPRS connection and establish the GSM connection. Maybe T-Mobile just rejects calls while a GPRS connection/transfer is active.
A1 intercepts the page download and my call comes in.
When I pick up, the GPRS connection is closed completely. (not just pending)
So receiving calls while surfing is no problem for me with Austrian A1 provider.
Any other experiences?

Gajet said:
Is that an EDGE network ?
Click to expand...
Click to collapse
no, just gprs; no edge.

cduijker said:
no, just gprs; no edge.
Click to expand...
Click to collapse
...then it's no way you'll get simultaneous voice and data (class a).

HELP: Cannot send SMS, but MMS, phone calls and data is working

Anyone know what may be up with this? When i try to send an SMS it just sits there attempting to send but ends up saying it has failed. no details on why.
Using data on 2g/3g is fine. I have wiped phone and installed new ROMs twice but the deal is the same.... I can still make/receive phone calls, can send/receive MMS, browser on wifi and 2g/3g is good, just no sms. phone status says i'm connected, phone network settings on *#*#4636#*#* says everything is fine, and I have even switched between AUS and AUS2 bands (i am in australia) but to no avail.
Please help!

aerospyke said:
Anyone know what may be up with this? When i try to send an SMS it just sits there attempting to send but ends up saying it has failed. no details on why.
Using data on 2g/3g is fine. I have wiped phone and installed new ROMs twice but the deal is the same.... I can still make/receive phone calls, can send/receive MMS, browser on wifi and 2g/3g is good, just no sms. phone status says i'm connected, phone network settings on *#*#4636#*#* says everything is fine, and I have even switched between AUS and AUS2 bands (i am in australia) but to no avail.
Please help!
Click to expand...
Click to collapse
Maybe your simcard has lost the smsc number? I don't remember how to edit it on the nexus though.
When did you first encounter this problem?
Sent from my Galaxy Nexus using Tapatalk

I first encountered this around the same time i first flashed revolutionHD, but doubt its directly related. I'll look around for the SMSC I need. Will update

experienced something similar at activation. are you porting your number?

ok you were right, my SMSC disappeared. annoyingly i couldn't put it directly into the phone, as it is complaining that there is an update error, but thankfully i use GoSMS and can tell it to use a custom SMSC and so that works.
As for activation, n i wasn't porting my number, this isn't even a new contract, my boss from my old job bought the phone for me outright as a christmas pressie so it is a direct swap.

[Q] Can't make outgoing calls

Hey everyone...Im been stumped for the past 3 hours now. for some reason, my phone can't make any outgoing calls with my GN, but receives calls. I can send and receive texts, use internet, everything but outgoing calls. I tried swapping SIM cards with my uncles and its the same problem. My SIM will make calls on his blackberry curve, but if he tries making a call with his SIM in my phone, it wont work either. We are both from FIDO, can anyone help me out with this problem. And to add, i was able to make a call this morning fine with no dropping or anything.what happened between 11am and 3PM that i can't make calls?

Www
diss3ntienc said:
Hey everyone...Im been stumped for the past 3 hours now. for some reason, my phone can't make any outgoing calls with my GN, but receives calls. I can send and receive texts, use internet, everything but outgoing calls. I tried swapping SIM cards with my uncles and its the same problem. My SIM will make calls on his blackberry curve, but if he tries making a call with his SIM in my phone, it wont work either. We are both from FIDO, can anyone help me out with this problem. And to add, i was able to make a call this morning fine with no dropping or anything.what happened between 11am and 3PM that i can't make calls?
Click to expand...
Click to collapse
Do you use a custom kernel?
Sent from my Galaxy Nexus using XDA App

I have the same problem and yes i have a custom rom too. How do i fix it?

Custom kernel has nothing to do with radio. Why would you be able to flash them separately if they were related?
OP, switch radios. Also, gsm or lte?

agreed. If its lte, you may need to re-activate. *228 then follow prompts.

mine is GSM.

so, is any they any way solve this problem?

No phones calls in France

Hello, I bought an S7A on eBay. I unlocked it with the GSM unlock code provided. Everything works fine, except ... I can't make or receive calls. When I make a call, no ringing tone, and it hangs up 20 seconds later. When someone calls me, the same, then they come across my answering machine.
I'm on the latest version of Oero available, no root or whatever. From what I saw (on GSMArena), the phone uses compatible frequencies in France.
I am at carrier Bouygues Teelcom.
You have any ideas ? Thank you !
PS: I translate from French, please be indulgent!

Same problem, this phone does not work in China

Since then I have understood the real problem: the phone cannot switch from the 4G network to the 2G network for calls on its own.
I don't know how I did it, but now I can make calls without any problem, but switching to 2G is very long (15 s).
I specify that it is impossible to use VoLTE to circumvent this problem.
For receiving calls, the phone does not switch to 2G and the incoming call still fails.
But I can force the 2G network (With the Samsung Band Selection app). And there, incoming calls work, but we only have 2G to surf.
When connected to WIFI, the phone automatically forces the mobile network to 2G, so incoming calls work without the application mentioned before.

Question Problem to use Motorola Edge X30 in USA

Hello, first of all I want to say that my native language is Spanish and I am using the Google translator to write this, so there may be writing errors and apologize.
Buy a motorola edge x30 and the imported import from China. The phone is unlocked to be used with GSM networks from anywhere in the world. When I bought it, I was with Metro PCS but in Metro I was told that the phone was not compatible with the 3G networks of them. After that I started to investigate and find a web page called kimovil and there I saw that the edge x30 was compatible in the USA with all the networks of 3 suppliers: Cricket, AT & T and T-Mobile: I choose to use change to metro by T-Mobile.
Immediately I left the T-Mobile store after making the change I have tried and could receive and send SMS, receive and make calls, and get access to the Internet without any problem. After a couple of hours of having activated services with T-Mobile, the phone could not or receive more calls (the Internet and SMS continue to work normally, the problem is only with calls). When I try to call someone, the call is not done and says "Hanging Up". I tried everything: Factory Reset, Networks Reset, modify network configuration, everything ... and I can not solve the problem. I went to T-Mobile to tell you about my problem and they tell me that the problem is not them but my phone.
If anyone knows how to solve this problem, I would greatly appreciate the help because I feel frustrated. Thanks

I have MOTO EDGE x30 with T-Mobile. Work perfectly. Check the SIM setting.

[email protected] said:
I have MOTO EDGE x30 with T-Mobile. Work perfectly. Check the SIM setting.
Click to expand...
Click to collapse
Good afternoon. I already managed to use the Edge X30 with the T-Mobile network. You just had to put the network selector on automatic so that you can use 5G, LTE, 3G and 2G as you see fit. The problem is that I realized that the phone only calls and receives calls in 3G and 2G, which limits not only the quality of the calls but also limits your coverage to be able to make calls since you can only make them in 3G and 2G . You who also use T-Mobile, does the same thing happen to you?

I'm not sure, but it supports 5G in N1/N3/N5/N7/N8/N20/N28/N38/N41/N78 and 4G in B1/B2/B3/B4/B5/B7/B8/B12/B17/B34/B38/B39/B40/B41. or check volte settings.

you may try to install "carrier services" app by google from the play store. it solves some of my problem with data connection.

jorgerios15 said:
Good afternoon. I already managed to use the Edge X30 with the T-Mobile network. You just had to put the network selector on automatic so that you can use 5G, LTE, 3G and 2G as you see fit. The problem is that I realized that the phone only calls and receives calls in 3G and 2G, which limits not only the quality of the calls but also limits your coverage to be able to make calls since you can only make them in 3G and 2G . You who also use T-Mobile, does the same thing happen to you?
Click to expand...
Click to collapse
Yes I have the same issue. Whenever I make or receive voice calls, the phone falls back from LTE to 2G. I looked everywhere on the phone for 'VOLTE' settings but could not find it. Does VOLTE work for this phone on Tmobile? Very frustrating.

Has anyone been able to find the solution for the calls switching back to 2g? I love the phone but this is extremely annoying. I'm on T-mobile. Thank you