Develop Bugs

[Q] Unable to receive receive calls while mobile data is on

I am going nuts here I have been searching all over the net and I still have not been able to fix this problem, so I am sorry if this seems like a repeated thread.
I have a Tmobile rooted Samsung Galaxy S III, I was running a nightly Cyanogenmod 10 ROM. Yesterday there was an update for that rom and I downloaded it and installed it, everything was fine and running smoothly until some people started telling me that they were not able to reach me by phone. I tried checking what was wrong and I finally realized that whenever I have my mobile data on or while I am using it I don't receive voice calls. I tried looking everywhere for a way to fix this and I came across the ##DATA# code in which I could turn off the DDTM option but unfortunately my phone doesn't recognize that code.
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this is the message I get every time I try to enter ##3282# code.
I thought that maybe something was wrong with the ROM itself so i decided to browse around here for one for my Tmobile samsung galaxy S 3 and I decided to install this one [ROM][4.2.2][RC1] LiquidSmooth ROMs - d2tmo - 2|14|13
after wiping data/cache and dalvik cache I installed this ROM and this is my current phone info
and still when I am using my mobile data I cant receive calls nor put the ##DATA# code to turn off DDTM.
is there any other way I could access that DDTM option? I am so frustrated or maybe I am doing something wrong.. I do admit I am no pro at this.
it seems that no matter what ROM I use that option to send calls to voicemail while on mobile data is stuck!!!
I tried downloading the stock ROM from Tmobile and flash it with Odin but every time I tried to do this the process would be stuck at aboot.mbn.
This is driving me crazy, everything works fine on my phone except for that, I cant receive calls if I use my internet, I am afraid of using it because I might lose some important calls.
Please if any of you could help me I will be greatly appreciated. Thanks in advance

Weird. Try updating your modem to LJC.
http://db.tt/MyKIQ16Y
MMI codes don't work on AOSP.

This is a known issue for all smartphones....u cant use phone while data network is being used. If u have an application using ur data in the background u wont b able to receive calls....

russeini said:
This is a known issue for all smartphones....u cant use phone while data network is being used. If u have an application using ur data in the background u wont b able to receive calls....
Click to expand...
Click to collapse
I've never had this problem with my phone until now. I would be browsing the net and get an incoming call, now my phone never rings unless the internet is off. It is annoying and I cant find a good fix for this, I am going insane,

Check your IMEI. You can use cell data and phone calls on GSM which is T-Mobile, only HSPA though, not on edge. You cannot on CDMA like Verizon on any cell network. I say check your IMEI cause you might only have edge network due to the loss of your IMEI while flashing.

mt3g said:
Check your IMEI. You can use cell data and phone calls on GSM which is T-Mobile, only HSPA though, not on edge. You cannot on CDMA like Verizon on any cell network. I say check your IMEI cause you might only have edge network due to the loss of your IMEI while flashing.
Click to expand...
Click to collapse
thanx, I did check my IMEI and it was 0 so I changed it back to mine and that did the trick!!

Hidden features/menus in the Unlocked Galaxy S9 G960U1 - Megathread

Howdy,
As many features are missing (disabled) on the unlocked Samsung Galaxy S9 bought directly from Samsung. I started digging deep and I found quite interesting things.
1) Wi-Fi Calling and HD Voice (VoLTE)
As someone who upgraded from an AT&T S6 (G920A), it didn't make sense to me that I was unable to get the same (or better) voice call quality in my Galaxy S9.
Using Tasker (the automation tool), I was able to see couple interesting apps:
HD Voice Settings
Outgoing HD Voice Settings
3 Wi-Fi Calling apps
Screenshots:
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Both HD Voice Settings and Outgoing HD Voice Settings are inaccessible. I tried turning on the Wi-Fi Calling in the last app, but as soon as you exit it goes back to off.
However, there's an app called LTE test that caught my attention. It has a menu option where you can test VoLTE.
Screenshots:
* P.S. It is worth noting that whenever I ask Bixby to turn Wi-Fi Calling, it goes to Network settings and gets confused. *
2) Dual-Sim Possibility?
In one of the screenshots above, there's a SIM 2 option in one of the 3 "Wi-Fi Calling" apps. In addition to that, I found another mention for SIM 2 (Slot 2) in an other app called Network settings. Therefore, theoretically speaking, there's a high chance that the hardware is there.
Screenshot:
Any contribution would be appreciated!

As far as I know, HD Voice and WiFi calling are not firmware related, but carrier related. Meaning that they are there (in the firmware) but they are activated only if the carrier allows it - depending on their infrastructure, subscription/pre-pay etc.
In my case, I have HD Voice and WiFi calling, but I can't find RTT.

raducanmihai said:
As far as I know, HD Voice and WiFi calling are not firmware related, but carrier related. Meaning that they are there (in the firmware) but they are activated only if the carrier allows it - depending on their infrastructure, subscription/pre-pay etc.
In my case, I have HD Voice and WiFi calling, but I can't find RTT.
Click to expand...
Click to collapse
On what carrier & firmware?

Orange Romania is the carrier.
Sent from my SM-G960F using Tapatalk

When I first bought my Galaxy S9 directly from Samsung, WiFi calling was not available however, in a later update it was made available and it works.
Phone is G960U1UEU3ARJ2 service provider is Verizon.

Airstream25 said:
When I first bought my Galaxy S9 directly from Samsung, WiFi calling was not available however, in a later update it was made available and it works.
Phone is G960U1UEU3ARJ2 service provider is Verizon.
Click to expand...
Click to collapse
That's what happened with me on AT&T also. I was actually told that since it was unlocked they couldn't promise anything but the update did enable it.

Tel864 said:
That's what happened with me on AT&T also. I was actually told that since it was unlocked they couldn't promise anything but the update did enable it.
Click to expand...
Click to collapse
What about HD voice

I am doing research about it too. It is related with csc. For example on my unlocked s9 I flashed the h3g UK firmware and the option stays on when you exit the menu but for me it is impossible to use because I live in Italy but don't have h3g so sip values are not correct

Can you elaborate? I purchased an unlocked S9, and I'm on AT&T. Are you saying you received an update that enabled hd voice and wifi calling?

Trouble with sim cards LG G7 dualsim

The problem with the phone in those cases:
1. You can not always hang up
2. It is not always possible to pick up the phone.
3. Both SIM cards are cut down as if they are not there.
All this happens arbitrarily, sometimes it works correctly, sometimes not. Very frustrating
LG G7 + Phone (LM-G710EAW)
According to the recommendations on the forum, I stitched the firmware for the CIS, successfully, the recording of calls and Russian letters to the dialer appeared pleasantly. From the unpleasant - instead of the level of the signal of the network with chopsticks, the triangles are non-standard and before that you could see which type of network 2g 3g H H+ and now it’s not visible only when internet is active.
Well, I think, okay, but it will work correctly ....
And it was not there - I can’t put the phone down and the cards disappear as they disappeared.
While writing this message already appeared ... Themselves ...
This is a complete fail for such a flagship level.
Does anyone have a solution, advice on what to do?
I really do not want to sell the device ... He has only a month
Used with Ukrainian networks
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Will be very thankfull if someone helps.:crying:
I can`t use my device normally, I even don`t know if someone calls me, because it doesn't respond
I saved logs when this device lost its sim cards
Here`s I made a screenshots that can tell detailed information about my device.

Does your LG G7 Dual SIM has WIFI calling?

I can reproduce the similar issue, started happening since jan 10.
When set on 4g, calling issue is persistent, setting it 2G only mode solves the issue.
I am using single sim only.

chompx2 said:
Does your LG G7 Dual SIM has WIFI calling?
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Click to collapse
Technically - yes.
In my case - no, wifi calling is don't active in Ukraine.

thalada said:
I can reproduce the similar issue, started happening since jan 10.
When set on 4g, calling issue is persistent, setting it 2G only mode solves the issue.
I am using single sim only.
Click to expand...
Click to collapse
The main thing is that sim cards are disappear. You can see it in screenshots that I've posted.
Any ideas what to do?

Slaiderr said:
Technically - yes.
In my case - no, wifi calling is don't active in Ukraine.
Click to expand...
Click to collapse
Thank you for the answer. I just recieved my LG G7 from Google and liking it so far. I have a Samsung S8+ duos but the S8+ duos does not support WIFI calling. I am thinking of getting a dual SIM LG G7. If the dual SIM LG G7 does not support WIFI calling, that would not be an upgrade for me. Thanks again.

That`s nice that help you with smth, but I really need to resolve my problem.... It`s so sad.... to see yoour phone without any cannectivity...and lost incomes

How to prevent XZ2 Compact from using VoLTE ?

Hi. I have a XZ2 Compact since a couple of weeks. My contract (Congstar, using german T-Mobile network) includes 4G for data, but only 2G/3G for calls. So the phone should change to 2G/3G mode if I call someone or someone call me. Sadly it only does, if there is 4G coverage at the beginning of the call. If there is only 2G/3G coverage at all I can't call anyone. So the phone always try to use VoLTE first before the network force it to use GSM for calls.
How can I force the phone to avoid VoLTE at all? I know there should be a option for this in the connections menu, but it's just not there. I tried a hard reset and I also flashed another firmware which I downloaded with XperiFirm. At the moment I have 52.0.A.8.50 installed.
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v0ujiemq said:
Hi. I have a XZ2 Compact since a couple of weeks. My contract (Congstar, using german T-Mobile network) includes 4G for data, but only 2G/3G for calls. So the phone should change to 2G/3G mode if I call someone or someone call me. Sadly it only does, if there is 4G coverage at the beginning of the call. If there is only 2G/3G coverage at all I can't call anyone. So the phone always try to use VoLTE first before the network force it to use GSM for calls.
How can I force the phone to avoid VoLTE at all? I know there should be a option for this in the connections menu, but it's just not there. I tried a hard reset and I also flashed another firmware which I downloaded with XperiFirm. At the moment I have 52.0.A.8.50 installed.
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Click to collapse
Usually no button means no support
I would ask the Sony support about this problem.
It may be a software bug.

So there is no quick solution? I would like to use my phone without waiting for a bugfix And I'm pretty sure I'm not the only user of this phone in germany and this "LTE only for data" sim card are pretty common here.

v0ujiemq said:
So there is no quick solution? I would like to use my phone without waiting for a bugfix And I'm pretty sure I'm not the only user of this phone in germany and this "LTE only for data" sim card are pretty common here.
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Click to collapse
I am a German user too, but with O2.
It's working here without any problems.
Like VoWIFI

MartinX3 said:
I am a German user too, but with O2.
It's working here without any problems.
Like VoWIFI
Click to expand...
Click to collapse
As you maybe know, O2 support VoLTE and Wifi Calling for all customers, also for reseller like blau, ay yildiz etc.
T-Mobile and Vodafone only allow VoLTE and Wifi Calling for their own customers, not for reseller like Congstar, Otelo etc.

v0ujiemq said:
As you maybe know, O2 support VoLTE and Wifi Calling for all customers, also for reseller like blau, ay yildiz etc.
T-Mobile and Vodafone only allow VoLTE and Wifi Calling for their own customers, not for reseller like Congstar, Otelo etc.
Click to expand...
Click to collapse
So I would ask the sony support, if it won't show a disable button.
Or use a SODP based custom rom. (Here VoLTE and VoWIFI is on the todo list).
Maybe one of the many listed adb props helps you, too.
http://bfy.tw/ONWv
But that would be just a forced disabling via ADB.
Not fixing the root cause of the issue.

Sony answered very fast, but just said I should contact my network provider. Well, useless as they only care about devices customers bought directly from them and not on the free market.

A couple of questions.

So I have my mate 20x today, global variant. Can someone tell me what carrier services app is please and is it needed? Also does anyone know where the carrier network configuration file is stored , I got one when I inserted my TMobile USA sim card on initial setup. Thanks.
Also is it normal for the 4g LTE icon to remain on when connected to WiFi? I've always been under impression that mobile data shuts off when WiFi is connected. Anywhere to check?
PS is sucks that double tap to wake screen doesn't work on this device. I hope the power button lasts. Lol
Sent from my EVR-L29 using Tapatalk

Limeybastard said:
So I have my mate 20x today, global variant. Can someone tell me what carrier services app is please and is it needed? Also does anyone know where the carrier network configuration file is stored , I got one when I inserted my TMobile USA sim card on initial setup. Thanks.
Also is it normal for the 4g LTE icon to remain on when connected to WiFi? I've always been under impression that mobile data shuts off when WiFi is connected. Anywhere to check?
PS is sucks that double tap to wake screen doesn't work on this device. I hope the power button lasts. Lol
Sent from my EVR-L29 using Tapatalk
Click to expand...
Click to collapse
About carrier services: there are different opinions, some say that it is currently only for Pixel phones, the others that it supports RCS if the provider has it enabled, there are complains that it sucks battery...
Carrier network configuration could be found under settings/wireless&networks/mobile network or dual sim settings
4g sign stays when you use WIFI though there is no mobile data consumption then. You can easily check mobile data usage under settings/wireless&networks/data usage.
I've tried and double tap indeed doesn't work. I never use it though. I get nervous with functions which could trigger the phone unintentionally and double tap might be a perfect candidate. You have other safer possibilities to lock and unlock. And yes, the power button is reliable.

piskr said:
About carrier services: there are different opinions, some say that it is currently only for Pixel phones, the others that it supports RCS if the provider has it enabled, there are complains that it sucks battery...
Carrier network configuration could be found under settings/wireless&networks/mobile network or dual sim settings
4g sign stays when you use WIFI though there is no mobile data consumption then. You can easily check mobile data usage under settings/wireless&networks/data usage.
I've tried and double tap indeed doesn't work. I never use it though. I get nervous with functions which could trigger the phone unintentionally and double tap might be a perfect candidate. You have other safer possibilities to lock and unlock. And yes, the power button is reliable.
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Thanks, with carrier services I was referring to the attached.
In regards to the carrier configuration text message I received when I first inserted my sim card , I couldn't locate that configuration file. Maybe it gets deleted with the text message my carrier sent me?
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Probably related. But I always disable Google body sensors and on this device I get the attached.
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Also anyway to circumvent the attached? Or is it relatively normal? Cheers
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