VoLTE not working on T-mobile Note 4 on JIO - T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting

Hi members!
I own an officially unlocked SM-N910T mobile (updated to latest MM 6.0.1) and currently using it in India. I can use 4g LTE for data but VoLTE doesn't work on my phone.
My network operator JIO provides LTE/VoLTE on Band 3, 5 and 40. I have enabled VoLTE from Settings > Calls > Call settings but no joy
VoLTE is enabled on my SIM and I can use it on another mobile.
I have been trying to understand what could be the issue over last 2 weeks but without any satisfactory answer from anyone.
So, I am wondering:
1. Is it because I don't have Indian CSC on my T-mobile phone? Is it even possible to flash Indian CSC on this device?
2. Is it because my device IMEI is 'NOT -INDIAN IMEI" and hence not supported? Customer care gives me more confusing answers - sometimes they say my phone is compatible for VoLTE and some say only Indian devices are supported.
3. Is something still locked to TMOBILE even after the official unlock?
Any answers are really appreciated from the any of you!
Cheers and thanks in advance!

Kamaldev.kd said:
Hi members!
I own an officially unlocked SM-N910T mobile (updated to latest MM 6.0.1) and currently using it in India. I can use 4g LTE for data but VoLTE doesn't work on my phone.
My network operator JIO provides LTE/VoLTE on Band 3, 5 and 40. I have enabled VoLTE from Settings > Calls > Call settings but no joy
VoLTE is enabled on my SIM and I can use it on another mobile.
I have been trying to understand what could be the issue over last 2 weeks but without any satisfactory answer from anyone.
So, I am wondering:
1. Is it because I don't have Indian CSC on my T-mobile phone? Is it even possible to flash Indian CSC on this device?
2. Is it because my device IMEI is 'NOT -INDIAN IMEI" and hence not supported? Customer care gives me more confusing answers - sometimes they say my phone is compatible for VoLTE and some say only Indian devices are supported.
3. Is something still locked to TMOBILE even after the official unlock?
Any answers are really appreciated from the any of you!
Cheers and thanks in advance!
Click to expand...
Click to collapse
It may be a regional thing. My 910t uses volte on straight talk in the states with an att sim with no issues. Surprised me actually.

Same problem for me too.. I too own N910T.. Volte is enabled but Call failed error comes again nd again..... Can Anyone please help out....

did anyone found answer for this question?

jio VoLTE in t-mobile note 4
anantharam3 said:
did anyone found answer for this question?
Click to expand...
Click to collapse
https://forum.xda-developers.com/showpost.php?p=70484835&postcount=21

devbiju said:
https://forum.xda-developers.com/showpost.php?p=70484835&postcount=21
Click to expand...
Click to collapse
Hi devbiju, thanks for pointing me to the post, but more help is appreciated. I did change my rom to RAM-rom. how do i set the IMS-APN. whenever i add the IMS apn, it doesn't stick
Please help.

anantharam3 said:
Hi devbiju, thanks for pointing me to the post, but more help is appreciated. I did change my rom to RAM-rom. how do i set the IMS-APN. whenever i add the IMS apn, it doesn't stick
Please help.
Click to expand...
Click to collapse
After RAM Rom installation you can flash INU CSC, Dr Ketan uploaded it in some threads which i forgot.
for IMS apn , you simply create new APN with name and type as IMS and save it. It may not be listed or need not be selected in APNs list. but you could see the VoLTE in status bar after creating it. Also ensure that you create jionet APN first to get LTE access instead of using default jio APN settings.

devbiju said:
After RAM Rom installation you can flash INU CSC, Dr Ketan uploaded it in some threads which i forgot.
for IMS apn , you simply create new APN with name and type as IMS and save it. It may not be listed or need not be selected in APNs list. but you could see the VoLTE in status bar after creating it. Also ensure that you create jionet APN first to get LTE access instead of using default jio APN settings.
Click to expand...
Click to collapse
thanks mate, figured that out..

gunz.jones said:
It may be a regional thing. My 910t uses volte on straight talk in the states with an att sim with no issues. Surprised me actually.
Click to expand...
Click to collapse
I have a unlocked 910-T on Cricket and I can't use WiFi calling or VoLTE. And I got there new SIM card and still no go.

Related

LTE Band Question

Hi everyone,
My carrier band is supported on the Mix namely B3 and B7. However, it is not possible to get 4G signal at all on the phone, only 3G.
Any suggestions?
Thanks
Vincent
Leechoonhwee said:
Hi everyone,
My carrier band is supported on the Mix namely B3 and B7. However, it is not possible to get 4G signal at all on the phone, only 3G.
Any suggestions?
Thanks
Vincent
Click to expand...
Click to collapse
Settings/SIM card/preferred network
Or maybe you need to setup APN manually.
jazz452 said:
Settings/SIM card/preferred network
Or maybe you need to setup APN manually.
Click to expand...
Click to collapse
Thanks for the suggestions but I have tried that to no avail. I install the LTE discovery app and there is no LTE signal at all.
I also tried flashing the modem file from China dev rom but it is also the same.
Leechoonhwee said:
Thanks for the suggestions but I have tried that to no avail. I install the LTE discovery app and there is no LTE signal at all.
I also tried flashing the modem file from China dev rom but it is also the same.
Click to expand...
Click to collapse
So your old phone worked ok? Can you try a different carrier SIM card to check.
What carrier are you on and what are your APN settings?
jazz452 said:
So your old phone worked ok? Can you try a different carrier SIM card to check.
Click to expand...
Click to collapse
Old phone is ok
omniphil said:
What carrier are you on and what are your APN settings?
Click to expand...
Click to collapse
I'm in Singapore and my carrier is Starhub. The apn settings are auto created and I double checked against other phone it is the same settings.
There is an issue with the latest update that causes the device not to connect to LTE. According to the official forum, it should be fixed in the next update, which is about a week away.
Edit: Some have suggested reflashing your ROM and doing a factory reset as well. Most of what I have seen points to the developer ROM. If you are using the developer ROM, then flashing back to the Chinese Stable and factory resetting the device should solve it. If you are using a vendor ROM, the same is recommended.
Just an update to anyone facing the same issue. This is a bug on the development rom and hence it affects all eu / custom rom that derive from there. Once flash onto the latest stable will resolve this issue.

Indian Csc in N910t. Can i flash/install Indian N910g csc in my N910t for Jio VoLTE.

Kindly help me with this problem. Can I flash N910g csc file in N910t so that Jio Volte can work properly in my phone. IMS registration failed coming in settings. It is a matter of csc files only. Please tell that can I do that??
pb08 said:
Kindly help me with this problem. Can I flash N910g csc file in N910t so that Jio Volte can work properly in my phone. IMS registration failed coming in settings. It is a matter of csc files only. Please tell that can I do that??
Click to expand...
Click to collapse
No one is successful working jio volte on n910t.
You must have either N910G OR N910F LTE international models because these 2 models comes all bands unlocked.
no matter whatever csc you change in N910T the LTE bands are diffrent in india from usa and will not support volte until your device get LTE network.
GO TO SETTINGS/ABOUT DRVICE/STATUS AND SEE mobile network type.
You will get maximum OUTSIDE USA HSPA OR HSPA+ BUT NO LTE.
I suggest you swap your device with indian model N910G that comes with indian csc and lte will works very well if you want jio volte.
Trex888 said:
No one is successful working jio volte on n910t.
You must have either N910G OR N910F LTE international models because these 2 models comes all bands unlocked.
no matter whatever csc you change in N910T the LTE bands are diffrent in india from usa and will not support volte until your device get LTE network.
GO TO SETTINGS/ABOUT DRVICE/STATUS AND SEE mobile network type.
You will get maximum OUTSIDE USA HSPA OR HSPA+ BUT NO LTE.
I suggest you swap your device with indian model N910G that comes with indian csc and lte will works very well if you want jio volte.
Click to expand...
Click to collapse
But it supports band 3 and band 5 of Jio Volte. And if I flash Indian CsC on N910t the volte support may come on these two bands. I want to know that can I flash that???
pb08 said:
But it supports band 3 and band 5 of Jio Volte. And if I flash Indian CsC on N910t the volte support may come on these two bands. I want to know that can I flash that???
Click to expand...
Click to collapse
You should get VoLTE in TMobile Note 4 - Need to flash a custom ROM and do some settings
try https://forum.xda-developers.com/showpost.php?p=70825524&postcount=7
devbiju said:
You should get VoLTE in TMobile Note 4 - Need to flash a custom ROM and do some settings
try https://forum.xda-developers.com/showpost.php?p=70825524&postcount=7
Click to expand...
Click to collapse
Can't I get it in the stock rom any way????
pb08 said:
Can't I get it in the stock rom any way????
Click to expand...
Click to collapse
Tried several ways, but succeed only with the mentioned one. You please try and update in case a success
devbiju said:
Tried several ways, but succeed only with the mentioned one. You please try and update in case a success
Click to expand...
Click to collapse
Are you sure that it will work??? Can you guarantee it?? Bcz once I've already left my phone blank.. Now I don't want that to repeat again in any situation.. I'll only be trying if you say with a guarantee that it works.
Yes it does. Follow the steps in the above mentioned links
I hv sm-910F.. downloaded Indian csc files from net. Replaced with stock CSC files thru root explorer & changed permission's of CSC files, then rebooted device,but only change is Network changed from 4G to LTE. There is no VOLTE still. Can anybody

Galaxy Note 8 VoLTE is not working with India Jio SIM, anyone facing the same issue?

I bought Galaxy Note 8 64GB model yesterday from Samsung India online shop, inserted Jio SIM but VoLTE doesn't work, mobile data connected only with LTE, In order to make calls I had to install Jio4gvoice app. Note 8 doesn't have option to enable VoLTE.
When I contacted customer service they said bar code mismatch issue between the jio sim and mobile phone, new software update will be issued to resolve this problem.
Has anyone facing JioSIM VoLTE issue with Samsung Galaxy Note 8?
I am facing the same issue.
Jio customer care executive said the same thing.
Hope it gets resolved soon.
Its working on ma bros note8 here in India with jio... Sim is in slot 1 like its supposed to be.. Also it shud be assigned 4g/lte in mobile network settings.
I am facing the same issue Volte does not appear sometime
Changed sim card no luck with note 8 where as same sim card is working properly with MI mobile.
Sometime cant find Network .Volte disappear,No call no sms no net all dead .
Need urgent Fix
facing the same issue
hi,
I'm facing the same issue. i spoke to the jio customer care, but to no avail.
I applied to port to airtel. In the meanwhile i'm using their HDvoice app for calls and texts.
Any solution yet
Hi, I am facing the same issue. In my case the mobile was bought from US. Is there a solution? Jio4GVoice is annoying to keep all the time in mobile data even though I have fibre net in my home.
have you looked if it can be enabled via ims using Shortcut Master lite
Download Indian firmware
extract a file that start with name HOME_CSC_OXM***
flash that with Odin CSC tab.
Before this make backup of data including Int storage as it may wipe everything.
OR
Simply use a custom ROM that support Jio VolTE
Any fix for this issue yet? It's annoying, especially when the phone is made in India for India and doesn't work as expected!
Hello Guys,
As the vodafone VoLTE is launched in Delhi NCR circle i was casually trying to activate the same in my connection! I wasnt able to find the right setting, but then on the vodafone website they said to send a msg "4G Check" to 199 for checking compatibility of VoLTE on my handset (That is Note 8), to my horror the message i received was,
"Your Mobile Handset supports 4G, but will not support VoLTE. Kindly upgrade your handset to experience Vodafone VoLTE.
Are you kidding me, Note 8 doesnt support VoLTE?? Any inputs?
Note 8 supports VoLte but firmware needs required changes. Samsung have applied changes to to only three devices S9 pro, J7 next and J7 Pro to support Vodafone VoLte. Jio users already using VoLte on N8 so sooner or later it will be available for Vodafone too
But if it works with airtel volte and jio volte on the same firmware then how can it be a Samsung issue .?
Same step can be done for N9500 model too, for replacing TGY(hongkong) CSC by INS CSC ?
Will it trigger knox if I do so ?
dr.ketan said:
Download Indian firmware
extract a file that start with name HOME_CSC_OXM***
flash that with Odin CSC tab.
Before this make backup of data including Int storage as it may wipe everything.
OR
Simply use a custom ROM that support Jio VolTE
Click to expand...
Click to collapse
I am using Vodafone sim and got the same msg that volte is not supported.. Any idea how to activate it?
TheRealFighter said:
Same step can be done for N9500 model too, for replacing TGY(hongkong) CSC by INS CSC ?
Will it trigger knox if I do so ?
Click to expand...
Click to collapse
Hello, I have been wanting to enable VoLTE functionality on my Galaxy Note 8 N9500 bought from UAE. Though its from UAE I was given a N9500 Version which is a Honkong / Chinese version of the phone. I am in India and want to use Samsung pay and also VoLTE.
Samsung pay would only take me to Install Honkong version of samsung pay.
Is it possible to flash a INS (Indian) firmware on this phone ?
noob_power said:
Hello, I have been wanting to enable VoLTE functionality on my Galaxy Note 8 N9500 bought from UAE. Though its from UAE I was given a N9500 Version which is a Honkong / Chinese version of the phone. I am in India and want to use Samsung pay and also VoLTE.
Samsung pay would only take me to Install Honkong version of samsung pay.
Is it possible to flash a INS (Indian) firmware on this phone ?
Click to expand...
Click to collapse
No!
N9500 is Snapdragon soc.
Indian market gets the ones with Exynos soc.
So not compatible!
Only way is to root your phone and flash the modded csc zip file. BUT you Will LOSE Samsung pay! (For good)
BluePhnx said:
No!
N9500 is Snapdragon soc.
Indian market gets the ones with Exynos soc.
So not compatible!
Only way is to root your phone and flash the modded csc zip file. BUT you Will LOSE Samsung pay! (For good)
Click to expand...
Click to collapse
Thanks for the quick reply Buddy. If not Indian firmware can we flash firmware of a country supporting VoLte . Coz Currently when I want to toggle greyed out VoLte button it says "Volte is not supported by your current software version. Contact customer service for more details" . I can live without samsung pay.
To make VoLTE work you need the IMS APN, basically when using VoLTE all the voice is send as "data" instead of "voice" when compare to 3G but these "data" are send to the IMS APN. Some phone allow you to manually add the IMS APN and turn on VoLTE, I don't know if note8 can do this or not as I never try to do it manually.
You can copy the IMS APN setting from other phone or ask your operator for it.
As I know Samsung will only include the IMS APN of the firmware's region in the firmware only.
DummyPLUG said:
To make VoLTE work you need the IMS APN, basically when using VoLTE all the voice is send as "data" instead of "voice" when compare to 3G but these "data" are send to the IMS APN. Some phone allow you to manually add the IMS APN and turn on VoLTE, I don't know if note8 can do this or not as I never try to do it manually.
You can copy the IMS APN setting from other phone or ask your operator for it.
As I know Samsung will only include the IMS APN of the firmware's region in the firmware only.
Click to expand...
Click to collapse
Hi,
i am able to enable VOLTE. but calls not working, in IMS settings i enabled all but in IMS information VOLTE is false. i asked one guy he told that he dont know indian JIO CSC codes, so you have to contact someone who can do indian JIO CSC code for SM N 9500. pls help to get VOLTE
i am eagerly waiting for your reply and help
giri.sgc said:
Hi,
i am able to enable VOLTE. but calls not working, in IMS settings i enabled all but in IMS information VOLTE is false. i asked one guy he told that he dont know indian JIO CSC codes, so you have to contact someone who can do indian JIO CSC code for SM N 9500. pls help to get VOLTE
i am eagerly waiting for your reply and help
Click to expand...
Click to collapse
check this thread
https://forum.xda-developers.com/galaxy-note-8/help/oreo-n950n-kt-branded-ims-settings-t3769758

Hello can a custom rom fix 2g network only ? thanks.

Well as it says on title. A friend brought me an australian note 9. (exynos) version. But when i go on networks i cannot choose 2g only. it will be 2g/3g and auto switches. would a custom europe rom fix this and be able to choose 2g only? if someone knows some info i would be grateful. thanks a lot
Viouf said:
Well as it says on title. A friend brought me an australian note 9. (exynos) version. But when i go on networks i cannot choose 2g only. it will be 2g/3g and auto switches. would a custom europe rom fix this and be able to choose 2g only? if someone knows some info i would be grateful. thanks a lot
Click to expand...
Click to collapse
I dont guess
bump, pls anyone?
European, GB at least, allows selection of 2g only
Viouf said:
Well as it says on title. A friend brought me an australian note 9. (exynos) version. But when i go on networks i cannot choose 2g only. it will be 2g/3g and auto switches. would a custom europe rom fix this and be able to choose 2g only? if someone knows some info i would be grateful. thanks a lot
Click to expand...
Click to collapse
Not sure but the option might depend on your CSC or the sim card. What is your CSC and carrier?
Using this app you can choose any mode you want
https://play.google.com/store/apps/details?id=com.kliksob.forgswitch
i used and thanks for replying but it doesnt seem to work and change my network..

No VoLTE on Sprint V40 crossflashed to US firmware

Hey, I have successfully flashed a Sprint LG V40 v405ua to US firmware 20g but VoLTE is not working. I am on Tmobile network and every time I make a phone call it switches from LTE to H. I heard Tmobile will be moving all phone calls to VoLTE in the middle of 2022. How can I enable VoLTE? Am I missing something? Thanks!
megadrive007 said:
Hey, I have successfully flashed a Sprint LG V40 v405ua to US firmware 20g but VoLTE is not working. I am on Tmobile network and every time I make a phone call it switches from LTE to H. I heard Tmobile will be moving all phone calls to VoLTE in the middle of 2022. How can I enable VoLTE? Am I missing something? Thanks!
Click to expand...
Click to collapse
if you have access to the OP section, try to change it in cust.prop ro.vendor.lge.build.target_operator = OPEN to TMO
megadrive007 said:
Hey, I have successfully flashed a Sprint LG V40 v405ua to US firmware 20g but VoLTE is not working. I am on Tmobile network and every time I make a phone call it switches from LTE to H. I heard Tmobile will be moving all phone calls to VoLTE in the middle of 2022. How can I enable VoLTE? Am I missing something? Thanks!
Click to expand...
Click to collapse
I'd suggest looking at the apn settings. That should be working (volte) without any system modifications.
I checked the APN settings and they are all correct. I am using US firmware version 20g, should I try using an earlier one like 20f? What versions are wokring for you? thanks
megadrive007 said:
I checked the APN settings and they are all correct. I am using US firmware version 20g, should I try using an earlier one like 20f? What versions are wokring for you? thanks
Click to expand...
Click to collapse
I don't have a v40 anymore but remember any version I tried of us open cross flashed to my at&t would work no problem. I remember my carrier mint mobile required you to select 'vowifi' in the account to get that to work. But volte always worked.
you might want to consider joining the v40 tele grp see if they can further assist. Maybe also consider calling t-mo, re your account may not be provisioned for volte? Not sure that's even possible but why not check anyway?
If it is like AT&T does whitelisting, ROM does not matter, but IMEI.

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