Not receiving incoming calls on GSM/WCDMA/LTE. - LG V30 Questions & Answers

I am unable to receive any incoming calls in GSM/WCDMA/LTE mode, after 1-2 hrs of standby. Data works fine but calls donot come through. The IVR says that the phone is switched off/out of network coverage area even though i have 4 bars of signal. I have into the hidden menu trying to activate volte feature which is by itself not present in settings. Still no effect. I have also changed sims, changed operators but the issue persists. Can anyone please help!

sagar1993 said:
I am unable to receive any incoming calls in GSM/WCDMA/LTE mode, after 1-2 hrs of standby. Data works fine but calls donot come through. The IVR says that the phone is switched off/out of network coverage area even though i have 4 bars of signal. I have into the hidden menu trying to activate volte feature which is by itself not present in settings. Still no effect. I have also changed sims, changed operators but the issue persists. Can anyone please help!
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What V30 variant do you have, what carrier are you on? When you changed SIMs, changed operators was it still the same underlying network (like two different MVNOs that both use AT&T, for instance) or two completely different networks (AT&T vs T-mobile).
Are you on Nougat or Oreo. Have you recently flashed a different KDZ to convert your phone to something else or are you completely with original firmware?

ChazzMatt said:
What V30 variant do you have, what carrier are you on? When you changed SIMs, changed operators was it still the same underlying network (like two different MVNOs that both use AT&T, for instance) or two completely different networks (AT&T vs T-mobile).
Are you on Nougat or Oreo. Have you recently flashed a different KDZ to convert your phone to something else or are you completely with original firmware?
Click to expand...
Click to collapse
I have LG V30+ H930DS Indian software version- V10f-IND-xx. I am on Idea Cellular network. I have tried changing the operators and keeping the same operator but different number.
Currently my device is on 7.1.2 Nougat using original firmware. I did not flash anything.

Related

[Q] Only data network available - no calling/texts

I picked up an unlocked TMo One in New York last week. I used it there with my Norwegian SIM with no problems.
Back home, I get "No Service" using the exact same SIM-card. Using the *#*#INFO#*#*-menu, I can see the SIM-card is recognised because it displays my carrier in the "Current Network" field. I am suspecting the TMo-infused Sense OS to reject my card, since to my understanding the phone is compatible with EU networks. Will i be fine if i flash another ROM, like the stock GPe, and get rid of the TMo-stuff altogheter, or is there another rock in the road here?
I used my Tmobile HTC One with the stock ROM in Norway using a Telenor SIM and in Greece using a Vodafone SIM.
I would make sure you have the proper APN info (I can't remember the appropriate one for the Norwegian carriers). I believe it should work without issues (mine did). If it worked with that SIM card already, it's not locked and it's not rejecting it.
Also, I found that when I returned home to the US, I had to choose Settings -> Mobile Data -> Network Operators and choose Select Automatically (even though it was already chosen). Maybe you need to do that too.
Currently I am running Android Revolution and that also works fine with my Norwegian and TMOUS SIM cards.
Good luck!
Thanks! I've at least made some progress. I tried setting Network Selection to automatic, and got reception, however only for about half a minute. I then tried adding my provider's APN info. This has given me permanent data connection, but still no GSM reception for texts and phone calls. I do get 2g data when in low coverage areas. I am finding this weird. Can anyone shed some light?
Okay. Just wanted to post my latest findings - if others are experiencing the same issue. I've flashed the latest Google Edition RUU, to see if the TMo ROM was causing it. But i still don't get GSM coverage. Data still connected on both 2G and 3G (haven't been within 4G coverage yet..)
When flashing I also updated firmware to latest.
Phone info says Current network: "NetCom" (my home network) GSM service: "Emergency Calls only" (I tested this, and I am able to place the call to emergency services) and GPRS service: "Connected" (I am typing this on my data connection via WiFi-tethering, actually)
The status menu shows this: Service state "Out of service" and My phone number "Unknown".
If anyone can come up with a theory, I am all ears..
laberkis said:
Okay. Just wanted to post my latest findings - if others are experiencing the same issue. I've flashed the latest Google Edition RUU, to see if the TMo ROM was causing it. But i still don't get GSM coverage. Data still connected on both 2G and 3G (haven't been within 4G coverage yet..)
When flashing I also updated firmware to latest.
Phone info says Current network: "NetCom" (my home network) GSM service: "Emergency Calls only" (I tested this, and I am able to place the call to emergency services) and GPRS service: "Connected" (I am typing this on my data connection via WiFi-tethering, actually)
The status menu shows this: Service state "Out of service" and My phone number "Unknown".
If anyone can come up with a theory, I am all ears..
Click to expand...
Click to collapse
Have you tried taking the phone to your provider? Maybe you need an update which or setting which they can provide.
I find it strange that it wouldn't recognize your phone number, usually that's a sign of some type of incompatibility with the phone and the network.
Sent from my HTC One using Tapatalk 2
I have contacted my provider to see if there's anything they can do. But they're playing a little hard to get.. I was afraid there would be an issue with compatibility at first, by since my data connection is all right, I'm not so sure. Also erdelyt above here says he has used the TMo phone in Norway without trouble. He has another provider, however. They run their own network, so I will be trying with one of their SIM cards next, if my provider NetCom aren't of any help. Thanks for your help so far. I'll be posting my findings further!
So, I got to try a Telenor SIM card the other day, and the issue is still there. Although, with that card the phone number was read and displayed in the phone info menu. The owner of the card suggested there was an unlock issue - but I did make calls with my phone and SIM card in the US, so I don't see how that could be.
So that's a small step further, but now I just have to wait to see what my carrier says..
I changed the title for this thread after my findings.. I got a new SIM-card for my carrier, and i got coverage to make one phone call, but after i hung up, it was gone. I am really in the dark here.. It can of course be a hardware fault, but that's a bit strange for an entirely new product..

Galaxy S6 Edge SM-G925F on T-Mobile USA and LTE/Data problems

Hello. I have an SM-G925F which I bought from Telekom Macedonia and I am still using my number from there also but I am currently in the US and would like to use it on T-Mobile USA.
I know that the device supports all the same bands as the SM-G925T model.
The problem I am having is that when my phone is set to LTE/WCDMA/GSM in the Network Mode settings, I do not have any data connection at all, only when I make a call, I start to get a data connection but only 3G/H+. If I switch my setting to WCDMA/GSM, then I get a data connection at all times like normal but it still is only 3G/H+. I have tried two different APNs and different settings in the APN but I still cannot get a data connection at all times on the LTE/WCDMA/GSM setting and I cannot get LTE/4G at all.
After contacting T-Mobile, all they came up with is to try to have the same software reinstalled on my phone. Does anyone have any experience with this and can anyone help me?
Anyone?
Call Tmobile and have them input your phone's IMEI in their system. Ask for the APN settings as well. I am on the same boat and one call to ATT got me from H to 4G. Your phone will just show 4G, not LTE but you will get LTE speeds regardless.
I tried doing that too. I called T-Mobile a few times and they confirmed my IMEI number being on the account but still no luck. It's really weird..sometimes I get 3G/H+ on the "LTE/WCDMA/GSM (auto connect)" network mode setting on the phone but most of the time, I get NO DATA connection at all..only the signal bars.
Any Update
Did you finally figure it out? Is LTE working now?

Anyone using this phone with AT&T in the US?

I love this phone....there, I said it. But it's driving me crazy.
I bought it from a Chinese retailer, who shipped it with X821 firmware, but the box states that it's an X820. I doubt there is any difference in the hardware.
I would have left everything as it was, but I can't seem to make phone calls (don't have a data plan yet...yeah, I know....) with anything other than 2G, and that is about to go extinct. When I set it to WCDMA, it shows a UMTS connection, with no carrier designation, but the tower is the same one I connect to with 2G. The phone does sometimes show an AT&T 3G connection in the status bar, but I can't make calls, even though I have full signal. When I place the same SIM in my old HTC Inspire, the same monitoring app shows "UMTS - AT&T HSDPA+" and works just fine.
I'm at my wits end. I have rooted, installed TeamSpain recovery, replaced the firmware with the X829 and even tinkered with the frequency configurations through DFS Studio (which did a lot of complaining, and I'm still not sure if the changes stuck 100%). I also played with APN settings and tried the SIM in different slots, both alone, and with another SIM. And after all of that, still no progress in getting this phone to use a 3G or 4G connection to make calls. If I don't set it to "GSM only", no phone calls in or out. I'm essentially right under a tower, so signal shouldn't be an issue.
If anyone is using the same provider in the US, and is not having these kinds of issues, I'd really appreciate hearing what firmware you are using, and/or what you did to get things working.
I am using it on x820 with official stock 0.17s firmware, and did a dirty flash to cuoco92's 17s firmware. Everything works including HD voice calls, and full LTE.
xterminater07 said:
I am using it on x820 with official stock 0.17s firmware, and did a dirty flash to cuoco92's 17s firmware. Everything works including HD voice calls, and full LTE.
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Click to collapse
I tried this, as well as the Remix ROM. In fact, I think I've tried just about everything, without success. At one point, I had one of the apps indicating a 4G connection, but the phone diagnostics showed GSM (2G). Even the apps aren't all sure what to make of what's going on with the connections reported by this phone.
Currently on the cuoco92 v35 ROM. When WCDMA is enabled, I see simply a good UMTS connection , sans carrier name, in the "Network Cell Info Lite" app, and no ability to make calls. I also often (but not always) see the "AT&T 3G" sign. 4G or LTE never shows at all, even though the diagnostics show that the phone is communicating with an LTE transmitter, when preferred network is set to "unknown". It won't even let me set things like "LTE only".
Any chance you could set your phone to WCDMA and see what the "Network Cell Info Lite" app shows you? Anyone else with this phone on AT&T?
BTW, I am now using a data plan, which I thought might make a difference. It doesn't. EDGE data only for me . New SIM card is on the way, but my hopes aren't high.
Is it possible for a Chinese seller to have borked the phone so thoroughly with their x821 ROM (it's an x820 marked phone), that it keeps any subsequent radios from flashing properly? I don't know how/why it would work for some and not others.
Starting to really dislike this "phone"......it's more of tablet at this point.
Thanks.
I think APN is not set for AT&T
try this:
"Main steps
To use data services on our network with a non-AT&T device, you may need to program the data settings. The sections below provide the correct settings and steps for programming based on your device type and operating system.
.
Access the Settings menu.
Locate and select Wireless & Networks or More Networks.
Select Mobile Networks.
Select Access Point Names.
Locate and select the option to add a new APN. This is usually accessed by a + symbol on the screen or by tapping the menu button.
Program each field using the settings below.
Save the changes to return to the APNs menu and select the new APN.
Name ATT Phone
APN phone
Proxy Not set
Port Not set
Username Not set
Password Not set
Server Not set
MMSC
MMS proxy
MMS port
MCC 310
MNC 410
Authentication Type None
APN type default
APN protocol IPv4
Bearer Unspecified
Note: If you are unable to program your device following the steps above, refer to your user manual or contact the manufacturer for assistance."
Cadet_C said:
I think APN is not set for AT&T
Click to expand...
Click to collapse
Thanks, but I wish it were so simple. I have tried this, and other APN settings. None work to get this phone to be usable on anything other than 2G.
I just received and activated the replacement SIM. Still no improvement. While typing this, I have Network Cell Info Lite app running, and with the Set Preferred Network Type showing "Unknown" in the phone's diagnostic screen, It will switch randomly between "EDGE AT&T" (which works fine) and "UMTS -" (which is useless). Both have strong signals. For a split second before it switched to "UMTS-", the app showed "GPRS AT&T", but only for a split second before it kicks over to "UMTS-".
I wish someone using this "phone" on AT&T in the US, would run this app to compare notes. It may be that that the phone works fine on a full implementation of LTE (i.e. in locations where AT&T have already deprecated 2G) but not in other areas. Still, that doesn't seem to explain why this phone seems unable to register on the same 3G network, used easily by my other phone, with the very same APN settings and SIM.
You would have to call att and check if they turned our phone on to use lte. If your phone is not "registered" as an LTE capable phone it wouldn't be able to pick it up. This phone has all the bands needed for AT&T because I am using it now. All LTE work straight out the box, and i'm on the latest 19s cn rom
xterminater07 said:
You would have to call att and check if they turned our phone on to use lte. If your phone is not "registered" as an LTE capable phone it wouldn't be able to pick it up. This phone has all the bands needed for AT&T because I am using it now. All LTE work straight out the box, and i'm on the latest 19s cn rom
Click to expand...
Click to collapse
I'm a bit confused. Is this what you did to achieve proper function of this device? I.e. calling AT&T and getting them to do this for you? My conversation with their tech person didn't seem to bear fruit in this regard.
Also, which slot do you have the SIM card in? I've used the stock 17s and now on cuoco92 v35 ROM. There definitely seems to be a difference in how the network settings behave, based on the location of the SIM. At one point, after selecting BAND 6 (when it would let me), the phone showed a constant "AT&T 3G" connection, but it was useless. No calls and no data.

H961N Network Issue

My H961N does not allow me to independently set my network band for each sim card. Both my network providers operate on 2G/3G/4G however since I have gotten this V10 I have had inconsistent network usage. At first I would strongly get one network and the other would mostly be on Emergency Calls when indoors depending on where I was. I used the hidden menu code *#546368#*961#-> Field Test -> Modem Settings, from Modem Settins I have tried to set the RAT Selection and the Network Mode however when I check Engineering Mode both sims show the same band if I am on WCDMA Only or GSM Only but neither provider operators on the same band except for one on 3G. If RAT is set to selectively move between two or more frequencies then one sim shows Invalid Band in Engineering Mode. Using Network Mode I have tried to set each sim to different band but both would either show the same band or one would appear invalid under Engineering Mode.
Another Issue I have is I am unable to use data even though I have the correct APN for both of my Network Providers. I have verified that both sims do work when used in another phone, at one point I visited both Providers but none could give me an answer to my issue. One of my Providers did however try and activated a data plan while I was in their office and the V10 did show 3G and received data however upon returning back to my regular surroundings I no longer got any data. I have tried upgrading the V10 to Marshmallow and Nougat but the upgrade did not solve this problem, neither the one I stated before. But on Nougat both my sims did show 3G but strangely only when I have my Wifi active and using a VPN. Currently I am on Lollipop and rooted I considered trying to flashing a qcn, sec and nvm files since I saw a site listing them as fixing network and data issues on this particular phone, I have the files just in case. Any help would be greatly appreciated.

LG G8X and Wifi calling fix?

I have two used LG G8x - G850QM (unlocked) and G850UM (Sprint unlocked).
I am on T-Mobile for years.
The G850QM on T-Mobile shows wifi-calling on the menu and it works.
The G850UM has no wifi-calling switch on the menu, just not there.
I installed WiFi Calling app from Widget7 from Play Store. The app seemed to bring out a hidden WiFi calling menu. And the WiFi calling works. I confirmed the WiFi calls on my T-Mobile bill portal.
Hope this can help
Does it do anything for Volte?
jdapp said:
Does it do anything for Volte?
Click to expand...
Click to collapse
I used two different VoLTE Check app. Both indicated VoLTE ACTIVE.
I dai!ed *#*#4636#*#* to go into Diag menu. "Phobe Info" indicated that
VoLTE provisioned
Video Calling Provisioned
WiFi Calling Provisioned
EAB/Presence Provisioned
But all the "switches" were grayed out.
This is in my daiily driver LG G8X g850UM on T-Mobile.
I assumed VoLTE is working automatically.
Most people with tmobile on this phone have found that for calls the phone goes from 4g to 3g when making a call. You will only see this transition if you are looking at the 4g indicator while on the call.
The concern is when T-Mobile discontinues 3g next month then you will not be able to make phone calls.
If you dont mind you might take a look as you make a call and see if it stays on 4g.
I understand. I, with 4 LG phones on Tmobile, am in the same boat with a lot of people. And I have purchased more LG phones- 3 V40 , 1 G7 and 3 Q7+ before I learned about the network transition.
Tmobile did a piss poor job in explaining the 3G shutdown.
Today is 4/1, with my Sprint-unlocked LG G8X, I can make a call and the LTE indicator stayed on.
This is what Tmobile has announced.
As of March 31, 2022, Sprint’s older 3G (CDMA) network will be retired
As of June 30, 2022, Sprint’s LTE network will be retired
As of July 1, 2022, T-Mobile’s older 3G UMTS network will be retired
Also Tmobile has delayed Sprint 3G shutdown until May 30.
Downloaded app and enabled, but all my buttons are still greyed out and it definitely still goes to 3g during a call? Not sure why it is not working on my phone?
It has something to do with the combination of native ROM, TMobile or Sprint SIM card in use, provisioning of VoLTE, and the (T-Mobile) LTE channels supported in your phone. I have not figured everything out yet.
It will be a rough ride for me until July 1 when the transition is over.
Forget what I've posted. I f'ked up. I mixed up 2 models.
I just received a T-Mobile email telling me my daily driver G850UM does not have the Volte turned on.
I looked up Phone Info and found Volte Provisioned switch is off and grayed out. When I wrote the post on March 31 the Volte Provisioned switch was on but grayed out.
I swap SIm card to the G850QM phone, and the Volte Provisioned switch is visible and in ON position. Look like I need to switch phone near term. And then find a way to cross flash QM firmware onto UM model. Need research. Fvk T-Mobile and the other two for doing their fake 5G rollout.
Thank you Buontinh. Got Volte, WiFi calling and video calling on my LG G7X G850UM on 20P software.
Uploaded the modded abl_a to both _a and _b. Insert an active T-Mobile SIM card, got new TMobile bootup logo. Got the wifi-calling switch. Got into Phone Info and saw votle Provisioned, WiFi calling provisioned, and video calling provisioned. Grayed out however. I made a call to my landline and the 4G LTE light stayed on. I guess it is working.
Still on Android 10 however.
The most difficult part was to get the phone on EDL mode. Must have tried 20 times before getting the "dark screen" EDL mode, only to learn that a Qualcomm hs-usb qdloader 9008 driver was needed too.
So I followed the below directions from reddit and it worked great on my velvet. I did the same thing on my LG g8x with *#546368#*850# code and I now have Volte, however phone still drops to 3g when it makes a call any thoughts on how to fix that?
There is a way to force enable VoLTE on the "LG Velvet 4G Dual Sim" specifically your version which is the "LM-G910EMW".
By default the feature is disabled on this model variant for who knows why.
Follow the steps below: 1. Click on the "Phone" app and dial "##4636##" -If done correctly it'll automatically bring you to the "testing" settings menu.
Click on "Phone Information" -you should see a list of VoLTE settings however by default they are disabled and greyed out but don't worry there's a way to reactivate VoLTE. (You Will Come Back to this Menu later)
Go to your file app and create a file named "enable_ue" -thats all you need to do just create the file, nothing more nothing less.
Go back to the "Phone" App and dial "#*462633*#910#" -This code is specific to the variant and will not work on other non LM-G910EMW Phones. Dialing this should bring up the "Hidden LG Menu"
Select Field Test>Universal Enabler>Create New Config -a menu with check boxes for VoLTE options appearing
Select the boxes as follows "VoLTE" "ViLTE" "VoWifi" "ViWifi" And finally hit "Confirm" -a prompt will appear stating "Vo Services Updated"
Immediately restart your phone to allow the settings to kick in
After your phone has restarted go into your Settings>Network & Internet>Mobile Networks -If done correctly the VoLTE option will now be unlocked and available.
Switch on the "VoLTE"
Now to double check that your phone now truly has VoLTE enabled, repeat steps 1-2. If done correctly the menu should now say "VoLTE Provisioned Video Calling Provisioned Wifi Calling Provisioned " -if these 3 are all switched on then you have successfully force enabled VoLTE on your LG Velvet 4G Dual Sim LM-G910EMW, congratulations!
reachforthesky said:
I have two used LG G8x - G850QM (unlocked) and G850UM (Sprint unlocked).
I am on T-Mobile for years.
The G850QM on T-Mobile shows wifi-calling on the menu and it works.
The G850UM has no wifi-calling switch on the menu, just not there.
I installed WiFi Calling app from Widget7 from Play Store. The app seemed to bring out a hidden WiFi calling menu. And the WiFi calling works. I confirmed the WiFi calls on my T-Mobile bill portal.
Hope this can help
Click to expand...
Click to collapse
Hello, I sintalled the app and it leads to a LG look menu I never encoutered with a WiFi calling switch !
However, when I go back to the app, then press again the button to open the menu, the switch is disabled.
Any idea how to keep it active ?

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