Please Help Call Not working after Custom Rom - Samsung Galaxy A20 Questions & Answers

i have installed Derpfest 13 and bananadroid 12 in my samsung A20 but both rom has calling issue, call not connecting in both rom, i am using Jio 4g Volte sim card, i have tried everything from my side, clean flash, change rom, clear cach dalvik etc.

neerajarora2u said:
i have installed Derpfest 13 and bananadroid 12 in my samsung A20 but both rom has calling issue, call not connecting in both rom, i am using Jio 4g Volte sim card, i have tried everything from my side, clean flash, change rom, clear cach dalvik etc.
Click to expand...
Click to collapse
VOLTE is not supported by AOSP roms. This applies to all the roms including gsis based on AOSP.
VOLTE will work only on OneUI based roms atleast for a20.

Related

Any Custom ROM Supporting VoLTE ?

Hello All,
This query is regarding Redmi 2 Custom Rom. Is there any Custom ROM which supports VoLTE?
In India, Reliance Jio is launching 4G which will require VoLTE and hence this query. I have read that MIUI based on Lollipop base does support VoLTE but have not seen that option in Custom ROMs. Thanks in advance for help & comments
Edit
Basis feedback from users, to get VoLTE working following is solution:
1) One needs to first flash MIUI LP ROM (to get LP bootloader)
2) Second follow this by flashing ROMs like Orion, Mokee etc which supports VoLTE over LP bootloader
Read next post for details
Enable VoLTE in Redmi 2
The solution to get VoLTE working is following :
1) First, one needs to flash MIUI LP ROM (to get LP bootloader)
2) Second, flash ROMs like Orion, Mokee, RR, Project X, CM 13 etc which supports VoLTE over LP bootloader
3) Insert sim (example Jio for Indian users) and reboot. If required might have to create APN "ims"
4) In case APN "ims" doesn't work very well, pls follow this post here to replace apns config file.
That's it.. this will work.
Credits to multiple users from this thread. Cheers guys for being supportive
mGforCe said:
Bump ! Anyone who can help here.. Thanks
Click to expand...
Click to collapse
cm13 i think... yes.. cm13 snapshot.
neerajkumar18 said:
cm13 i think... yes.. cm13 snapshot.
Click to expand...
Click to collapse
Thanks Neeraj. Have you tried it? Any experience..
mGforCe said:
Thanks Neeraj. Have you tried it? Any experience..
Click to expand...
Click to collapse
no i haven't tried
Cm13 snapshot
Sent from my 2014818 using XDA-Developers mobile app
CM13 base Custom Roms does not support VoLTE
Im currently on Mokee with Jio sim & volte call does work. :good: I think cm13 too would work, Tesla didn't. Remember to be in lollipop firmware with volte support before flashing custom rom .
mits619 said:
Im currently on Mokee with Jio sim & volte call does work. :good: I think cm13 too would work, Tesla didn't. Remember to be in lollipop firmware with volte support before flashing custom rom .
Click to expand...
Click to collapse
Can you try on DU latest build and confirm for me if it's working for you?
Cm-13
I am having a question.. When I'm using any custom rom and using my Jio 4G sim in any of the custom rom the performance isn't that great. For eg. If I'm getting 34mbps speed in MIUI then in any custom ROM i will be getting 0.5-1.0 Mbps speed. Can anyone tell me why is this happening and any workaround for it?
[/COLOR]
mits619 said:
Im currently on Mokee with Jio sim & volte call does work. :good: I think cm13 too would work, Tesla didn't. Remember to be in lollipop firmware with volte support before flashing custom rom .
Click to expand...
Click to collapse
I tried d same..but calls nt wrkng..help bro
why install custom.. just install miui lollipop of redmi 2 prime and use VoLTE. it works
So in order to get VoLTE support on CM13, do you have to have Lollipop Bootloader and Modem flashed?
What about MM custom ROMs? Can anyone tell me for a fact if any ROM supports VoLTE. Also, can anyone confirm if this guide works for custom ROMs?
Can I Install the redmi 2 prime lollipop rom on redmi 2 1gb ram version are you sure it works, if not then what rom supports VoLte on 1gb redmi 2.
For me volte working perfectly
Cm 13, Zephyr, aicp, mokee
---------- Post added at 03:06 AM ---------- Previous post was at 03:04 AM ----------
shabtab said:
Can I Install the redmi 2 prime lollipop rom on redmi 2 1gb ram version are you sure it works, if not then what rom supports VoLte on 1gb redmi 2.
Click to expand...
Click to collapse
My friend using miui 8 Lollipop based ROM in Redmi 2 and it's working fine
mits619 said:
Im currently on Mokee with Jio sim & volte call does work. :good: I think cm13 too would work, Tesla didn't. Remember to be in lollipop firmware with volte support before flashing custom rom .
Click to expand...
Click to collapse
Which Mokee, Lollipop or Marshmallow?
Hi.. I don't know why. But jio 4g sim is not working in my cm13. I was rocking the stable miui 7 build that's v7.5. Its working fine in that. I have had no luck in making it work in cm13. Please help
nairitmukherjee0007 said:
Hi.. I don't know why. But jio 4g sim is not working in my cm13. I was rocking the stable miui 7 build that's v7.5. Its working fine in that. I have had no luck in making it work in cm13. Please help
Click to expand...
Click to collapse
I read this somewhere in CM13 thread. Try these APN settings it should work
For volte go to network setting then select apn.
Add new apn with below details for volte
Name - jio
APN - ims
APN Type - ims
Rest of things you can keep as it is.
Also for 4g internet
Name - jio4g
APN - jionet
APN Type - default

Best Nougat or Marshmallow rom with VoLTE support (SM-G900W8) (klte/kltecan) ?

Hey guys, can anybody recommend me a custom rom which supports VoLTE and is based on Nougat or Marshmellow? I have SM-G900W8 (klte/kltecan). My operator is Jio and it only supports VoLTE calls! CM 13 does not support VoLTE and after configuring APN, I cannot use data connection (APN settings are correct). CM 14.1 help me use data connection but it also does not support VoLTE. In addition there are a lot of bugs in CM 14.1. Any help will be appreciated.
Galaxy S5 (SM-G900T)
For the past 4 years I haven't found any roms that carries Volte Which is very disappointing and very important when it comes to being on a call and using the web. For the past few month's I believed to try every rom that's available and no Volte which is ridiculous. However, I'm writing this post in gud hopes that this matter would be taken into consideration. PS Thanks!

VoLTE works on OOS 3.5.6, but not on any CM14.1 ROM...

I will start right off the bat that I know it works very well on all ROMS for those that are in India. But can anyone here confirm VoLTE working on any custom Nougat ROM for those like me on T-Mobile in USA? It works flawlessly on 3.5.6, but as soon as I wipe and flash any custom 14.1 ROM, I lose it. The feature is enabled in SIM settings (Enhanced 4G LTE Mode) is enabled, but when I dial out, data switches from LTE to H. So this means even though the feature is enabled, it's not working on Nougat on T-Mobile in US.
Anyone?
M5devil said:
I will start right off the bat that I know it works very well on all ROMS for those that are in India. But can anyone here confirm VoLTE working on any custom Nougat ROM for those like me on T-Mobile in USA? It works flawlessly on 3.5.6, but as soon as I wipe and flash any custom 14.1 ROM, I lose it. The feature is enabled in SIM settings (Enhanced 4G LTE Mode) is enabled, but when I dial out, data switches from LTE to H. So this means even though the feature is enabled, it's not working on Nougat on T-Mobile in US.
Anyone?
Click to expand...
Click to collapse
Did you try clean flashing including system?
First install 3.5.6 and then clean flash any cm 14.1 ROM (especially the latest one from grarak). Volte works fine..
Is your VoLTE capable sim in Slot 1?
magnettron said:
Did you try clean flashing including system?
First install 3.5.6 and then clean flash any cm 14.1 ROM (especially the latest one from grarak). Volte works fine..
Click to expand...
Click to collapse
I've done that several times to no avail. First it was just flashing the 3.5.6 modem firmware while I was on RR 7.1.1. Then after that didn't work, I clean flashed OOS 3.5.6 and tested VoLTE and it worked as advertised with HD logo on calls and VoLTE logo in status bar. I was then happy and clean flashed (everything but internal storage) RR 7.1.1, enabled the Enhanced 4G LTE Mode, but that didn't work. I'm on Official CM 14.1 now with same result.
suraj.das said:
Is your VoLTE capable sim in Slot 1?
Click to expand...
Click to collapse
Yes it's in Slot 1.
Are you guys in US on T-Mobile? No offense to you guys, and I appreciate your help, but I know you got it working great on Jio in India... That might not be the case for us in US. That's why I want to hear from another T-Mobile customer to check if I'm not alone.
Thanks
In mean time I'm forced to stay on OOS 3.5.6 as VoLTE is working great on it.
M5devil said:
I've done that several times to no avail. First it was just flashing the 3.5.6 modem firmware while I was on RR 7.1.1. Then after that didn't work, I clean flashed OOS 3.5.6 and tested VoLTE and it worked as advertised with HD logo on calls and VoLTE logo in status bar. I was then happy and clean flashed (everything but internal storage) RR 7.1.1, enabled the Enhanced 4G LTE Mode, but that didn't work. I'm on Official CM 14.1 now with same result.
Yes it's in Slot 1.
Are you guys in US on T-Mobile? No offense to you guys, and I appreciate your help, but I know you got it working great on Jio in India... That might not be the case for us in US. That's why I want to hear from another T-Mobile customer to check if I'm not alone.
Thanks
Click to expand...
Click to collapse
Yeah I'm having same issue and it was working couple days ago it keeps dropping to H+ after couple days anyone help? It's not my service cause on my 5S I get LTE and it doesn't drop
M5devil said:
I've done that several times to no avail. First it was just flashing the 3.5.6 modem firmware while I was on RR 7.1.1. Then after that didn't work, I clean flashed OOS 3.5.6 and tested VoLTE and it worked as advertised with HD logo on calls and VoLTE logo in status bar. I was then happy and clean flashed (everything but internal storage) RR 7.1.1, enabled the Enhanced 4G LTE Mode, but that didn't work. I'm on Official CM 14.1 now with same result.
Yes it's in Slot 1.
Are you guys in US on T-Mobile? No offense to you guys, and I appreciate your help, but I know you got it working great on Jio in India... That might not be the case for us in US. That's why I want to hear from another T-Mobile customer to check if I'm not alone.
Thanks
Click to expand...
Click to collapse
Official CM 14.1 hasn't implemented Volte function yet, try the unofficial build from Grarak in basketbuild or andriod host.
As far as T-Mobile is concerned, if you do have Volte enabled in 3.5.6 (ie if you can make volte calls using oos 3.5.6, then i dont see a reason why it wont work on cm 14.1 unofficial).
Check out android development for OP2 to get the latest link from grarak.
Also slot 1 or 2 it doesn't matter. If you get Volte in oos 3.5.6 then in unofficial cm 14.1 you'll get it.
Dont know about RR though.
magnettron said:
Official CM 14.1 hasn't implemented Volte function yet, try the unofficial build from Grarak in basketbuild or andriod host.
As far as T-Mobile is concerned, if you do have Volte enabled in 3.5.6 (ie if you can make volte calls using oos 3.5.6, then i dont see a reason why it wont work on cm 14.1 unofficial).
Check out android development for OP2 to get the latest link from grarak.
Also slot 1 or 2 it doesn't matter. If you get Volte in oos 3.5.6 then in unofficial cm 14.1 you'll get it.
Dont know about RR though.
Click to expand...
Click to collapse
Thanks man, I'll check Graham build and report.
M5devil said:
Thanks man, I'll check Graham build and report.
Click to expand...
Click to collapse
Cheers mate, there are 2 different builds one from grarak and one from Seraph08. Try either one, both works fine.
I am using grarak and its stable and latest implementation of lineage.
https://mirror.srvr.gdn/?dir=grarak/oneplus2
or
https://basketbuild.com/devs/Seraph08/oneplus2/LineageOS
magnettron said:
Cheers mate, there are 2 different builds one from grarak and one from Seraph08. Try either one, both works fine.
I am using grarak and its stable and latest implementation of lineage.
https://mirror.srvr.gdn/?dir=grarak/oneplus2
or
https://basketbuild.com/devs/Seraph08/oneplus2/LineageOS
Click to expand...
Click to collapse
Just tried Grarak's latest build based on new LineageOS....still no go on VoLTE. The feature was already enabled under SIM 1 settings and as soon as I dial out LTE switches back to H
I'll try Seraph's build, but I'm afraid it will be the same... Are you on T-Mobile and VoLTE works CM14.1 for you?
Update: tried both builds, VoLTE is not working Again, it's enabled in the SIM settings, but when I dial out, LTE changes to H/H+.
I guess it's just not meant to be... I'll stick to OOS 3.5.6 for now
Thanks for your help!
Was downloading Seraph's build while on Grarak's and got a random reboot which never happened tocme before...
Have you enabled Enhanced 4G LTE Mode for the sim? That's the switch for VoLTE. Hope it worked
If the HD icon comes in the status bar and on notifications, then VoLTE is active.
Also set network type to LTE only for better use.
evilgenius94 said:
Have you enabled Enhanced 4G LTE Mode for the sim? That's the switch for VoLTE. Hope it worked
If the HD icon comes in the status bar and on notifications, then VoLTE is active.
Also set network type to LTE only for better use.
Click to expand...
Click to collapse
The problem is I had it enabled, but HD icon never comes up and VoLTE seems not to work on any CM141. ROM. But it works perfectly well on OOS 3.5.6. So I am not sure why this is the case... I guess I'll stay on OOS 3.5.6, unless another T-Mobile US user will confirm or disagree with my findings.
I know very well you guys have it working on JIO in India... this is not the case for me in USA on T-Mobile
M5devil said:
The problem is I had it enabled, but HD icon never comes up and VoLTE seems not to work on any CM141. ROM. But it works perfectly well on OOS 3.5.6. So I am not sure why this is the case... I guess I'll stay on OOS 3.5.6, unless another T-Mobile US user will confirm or disagree with my findings.
I know very well you guys have it working on JIO in India... this is not the case for me in USA on T-Mobile
Click to expand...
Click to collapse
Also check this under testing (dial *#*#4636#*#*)
evilgenius94 said:
Also check this under testing (dial *#*#4636#*#*)
Click to expand...
Click to collapse
This is what I see.
I guess I have to try this again on a CM14.1 ROM to see what it shows
Last thing u can try up is Clean Flash OOS 3.5.6 again and then clean flash some CM14.1 ROM
Something might work out
evilgenius94 said:
Last thing u can try up is Clean Flash OOS 3.5.6 again and then clean flash some CM14.1 ROM
Something might work out
Click to expand...
Click to collapse
I'll try that again tonight
M5devil said:
Just tried Grarak's latest build based on new LineageOS....still no go on VoLTE. The feature was already enabled under SIM 1 settings and as soon as I dial out LTE switches back to H
I'll try Seraph's build, but I'm afraid it will be the same... Are you on T-Mobile and VoLTE works CM14.1 for you?
Update: tried both builds, VoLTE is not working Again, it's enabled in the SIM settings, but when I dial out, LTE changes to H/H+.
I guess it's just not meant to be... I'll stick to OOS 3.5.6 for now
Thanks for your help!
Was downloading Seraph's build while on Grarak's and got a random reboot which never happened tocme before...
Click to expand...
Click to collapse
I assume that you did a clean flash (including system wipe in TWRP) over 3.5.6. If not the network will be unstable.
In one of the screenshot posted by you (in some above thread) I can see that Volte is enabled, is it on CM or 3.5.6 ?
T-Mobile in US is supported by 3.5.6 (Which I can see from the screenshot). So the firmware got the capability of Volte..
As of now there are 2 possibilities:
1 (If you clean flashed CM over OOS 3.5.6) : Then network is not stable, Network guru app will lock the LTE band, so give it a try with that. (If you need detailed steps with Network guru i can tell you that)
2 (If not clean flashed CM over OOS 3.5.6) : Recommend you to clean flash it. This will definitely work (suggest you to go for grarak). If you face issues after this, do let me know. We can find other work around.
Hope this helps.
magnettron said:
I assume that you did a clean flash (including system wipe in TWRP) over 3.5.6. If not the network will be unstable.
In one of the screenshot posted by you (in some above thread) I can see that Volte is enabled, is it on CM or 3.5.6 ?
T-Mobile in US is supported by 3.5.6 (Which I can see from the screenshot). So the firmware got the capability of Volte..
As of now there are 2 possibilities:
1 (If you clean flashed CM over OOS 3.5.6) : Then network is not stable, Network guru app will lock the LTE band, so give it a try with that. (If you need detailed steps with Network guru i can tell you that)
2 (If not clean flashed CM over OOS 3.5.6) : Recommend you to clean flash it. This will definitely work (suggest you to go for grarak). If you face issues after this, do let me know. We can find other work around.
Hope this helps.
Click to expand...
Click to collapse
Hey man, first of all I wanna thank you for helping me, I know it's an annoying topic for many.
I'll answer in order.
Yes, I did a clean flash, by wiping everything except internal storage. The screenshots I posted are from OOS 3.5.6. By the way, my hybrid TWRP doesn't get overwritten, so at least I don't have a headache reflashing recovery image after everything OOS flash. Unfortunately, it hadn't worked yet... Firmware is definitely VoLTE capable as I have it working very well now on OOS 3.5.6.
As for your suggestions, I tried both builds with clean flash, but they don't work. I kind of gave up after flashing nonstop and just stayed on OOS 3.5.6.
I think you're right though, CM14.1 definitely don't have VoLTE fully functional, at least for T-Mobile users, maybe it has to due with Band 12 (700a) as this is the band used in US for enhanced LTE.
I wanna hear from some other T-Mobile use, but appears there aren't that many...
I've tried Network Guru app when I has network signal drops, but I'm a little confused how to properly use it. I don't have a magic wand button, but through menu I can get to Band locking screen and in LTE section I had everything checked off. I know in US on T-Mobile we use bands 2 (2G), 4 (3G/4G), and new band 12 (enhanced 4G/LTE). When in the past I only locked band 12, I wasn't able to make calls at all as H/H+ were not active.
I will try to see what I have working now with VoLTE enabled on 3.5.6. I do know I'm mostly on band 4 and in some places band 12.
Hope this info helps.
Mikeyy233 said:
Yeah I'm having same issue and it was working couple days ago it keeps dropping to H+ after couple days anyone help? It's not my service cause on my 5S I get LTE and it doesn't drop
Click to expand...
Click to collapse
Are you also on T-Mobile?

VOLTE bricked via miui 9 by nurujjaman

Hey guys plzz help Volte had been not working now to every single user of this rom and doesn't working in any rom and some flashed miui official by lfastboo still voLTE not working plzz developers help us we tried everything.If u wanna take a look at miui 9 by nurujjaman pollab
update de firmware and flash miuipro, that works for me.
My phone contacts are merging with other contacts
Hi Guys,
I'm using 3S prime.
My phone contacts are merging with other contacts. I tried to delete some, but I lost some contacts. Please help me on this........
mannequiin said:
update de firmware and flash miuipro, that works for me.
Click to expand...
Click to collapse
Wait what if I flash miui 9 via fastboot it will work right?
Sunny Za said:
Wait what if I flash miui 9 via fastboot it will work right?
Click to expand...
Click to collapse
Exactly flashing Fastboot image solve mostly
Abhijeet Rajgor said:
Exactly flashing Fastboot image solve mostly
Click to expand...
Click to collapse
It it solved my voLTE works now
Having a serious problem.....I'm running pixel experience ROM now but I have a tried nitrogen OS, ressurection remix ROM, Lineage OS 15.1, Viper OS (nougat), Lineage OS 14.1 and many other ROMs. Volte was working fine few days ago but for the past 3-4 days it was not working. I thought it was a problem with the ROM so I changed the ROM but still got the issue. And today I came to know that my device is showing IMS registration: unavailable
Voice-over LTE: not available and some other things
I tried messing with APNs and flashed some volte patches but still got no luck. Then I tried searching on XDA forum and know what I tried every possible method in almost all the threads and still not able to get volte. Tried searching YouTube for IMS registration and tried googling it also but still the problem is there.
Help me out plzzzz....
Allison 1123 said:
Having a serious problem.....I'm running pixel experience ROM now but I have a tried nitrogen OS, ressurection remix ROM, Lineage OS 15.1, Viper OS (nougat), Lineage OS 14.1 and many other ROMs. Volte was working fine few days ago but for the past 3-4 days it was not working. I thought it was a problem with the ROM so I changed the ROM but still got the issue. And today I came to know that my device is showing IMS registration: unavailable
Voice-over LTE: not available and some other things
I tried messing with APNs and flashed some volte patches but still got no luck. Then I tried searching on XDA forum and know what I tried every possible method in almost all the threads and still not able to get volte. Tried searching YouTube for IMS registration and tried googling it also but still the problem is there.
Help me out plzzzz....
Click to expand...
Click to collapse
Faced same problem just flash fastboot rom it will work for sure.
Allison 1123 said:
Having a serious problem.....I'm running pixel experience ROM now but I have a tried nitrogen OS, ressurection remix ROM, Lineage OS 15.1, Viper OS (nougat), Lineage OS 14.1 and many other ROMs. Volte was working fine few days ago but for the past 3-4 days it was not working. I thought it was a problem with the ROM so I changed the ROM but still got the issue. And today I came to know that my device is showing IMS registration: unavailable
Voice-over LTE: not available and some other things
I tried messing with APNs and flashed some volte patches but still got no luck. Then I tried searching on XDA forum and know what I tried every possible method in almost all the threads and still not able to get volte. Tried searching YouTube for IMS registration and tried googling it also but still the problem is there.
Help me out plzzzz....
Click to expand...
Click to collapse
Wait first delete all apns present now create new APN name:ims,APN:ims,APN type:ims that's it save it (it won't show in APN) now create your old APN settings (don't restore to deafult create the old again that's important) save and that's it if it's not rom problem it will bring ur voLTE back
Try restoring EFS in twrp back up
Allison 1123 said:
Having a serious problem.....I'm running pixel experience ROM now but I have a tried nitrogen OS, ressurection remix ROM, Lineage OS 15.1, Viper OS (nougat), Lineage OS 14.1 and many other ROMs. Volte was working fine few days ago but for the past 3-4 days it was not working. I thought it was a problem with the ROM so I changed the ROM but still got the issue. And today I came to know that my device is showing IMS registration: unavailable
Voice-over LTE: not available and some other things
I tried messing with APNs and flashed some volte patches but still got no luck. Then I tried searching on XDA forum and know what I tried every possible method in almost all the threads and still not able to get volte. Tried searching YouTube for IMS registration and tried googling it also but still the problem is there.
Help me out plzzzz....
Click to expand...
Click to collapse
Maybe you need to write IMEI number again?
Does it show there when pressing *#06#* ?
U may try going back to MIUI 9
And then back to your favorite ROM
I did every single step mentioned above. Even my IMEI number is all good. But VOLTE problem reamins the same.
During the first boot...VOLTE was there, and it was working. Even when I Rebooted, it was again there and still working. But when I Power Off the device and then powered it on, VOLTE was gone and I was unable to call.
Rajshe25 said:
I did every single step mentioned above. Even my IMEI number is all good. But VOLTE problem reamins the same.
During the first boot...VOLTE was there, and it was working. Even when I Rebooted, it was again there and still working. But when I Power Off the device and then powered it on, VOLTE was gone and I was unable to call.
Click to expand...
Click to collapse
Yeah u have to flash fastboot it solved mine
Sunny Za said:
Yeah u have to flash fastboot it solved mine
Click to expand...
Click to collapse
I did that too and thrice bt the problem remained unsolved. As I mentioned, it worked during the initial boot of any custom rom, even after rebooting it. Bt when I powered it off and then booted it up, VOLTE was gone.
Rajshe25 said:
I did that too and thrice bt the problem remained unsolved. As I mentioned, it worked during the initial boot of any custom rom, even after rebooting it. Bt when I powered it off and then booted it up, VOLTE was gone.
Click to expand...
Click to collapse
Yeah happens with me to but now m using Xiaomi.eu miui 9 ROM bro use it for some days and flash another ROM voLTE will work fine as it creates a strong bond between firmware and ROM that miui 9 official doesn't and it has more features than it miui 9. So give it a try
Sunny Za said:
Yeah happens with me to but now m using Xiaomi.eu miui 9 ROM bro use it for some days and flash another ROM voLTE will work fine as it creates a strong bond between firmware and ROM that miui 9 official doesn't and it has more features than it miui 9. So give it a try
Click to expand...
Click to collapse
Could u plz provide the link
---------- Post added at 03:31 PM ---------- Previous post was at 03:30 PM ----------
Rajshe25 said:
Could u plz provide the link
Click to expand...
Click to collapse
Will Jio work?
Use this trick:-
Flash any miui rom v8 or v9 & boot into system..
Now go to recovery wipe all except storage.
Now flash any custom rom i suggest lineage 14.1 & boot into system..
Now again go to recovery go to wipe , advance wipe & wipe only system
Now flash any MIUI rom then wipe cache & dalvik
Now reboot...
Volla your volte now works...
I tried 2 times & all time it works....
If it works for u hit thanks..

VoLTE not working on any custom ROM (lavender)

HI,
I want to ask wether VoLTE is working for you IF you have Global RN7, With custom ROM (and your carrier and SIM supports VoLTE of course).
I have Global RN7 running on xiaomi.eu based ROM.
Before I flashed ROM from xiaomi.eu based the VoLTE was working fine for me, after I disabled VoLTE carrier check. But now with the xiaomi.eu based ROM, VoLTE no longer works for me. I already asked on the forum for my rom - that is miuios.cz - but it seems they do not know what to do with it.
Besides I tried a few other MIUI base ROMs as well as pure android based like LineageOS for example but VoLTE did not work in ANY custom ROM.
So, has it occured to you too, or your VoLTE is working just fine on custom ROM?
Do you know any way to fix this?
Thanks!
search around for the build.prop edit to allow it or you can try the magisk module voenabler-v1.8.zip https://github.com/edgd1er/voenabler/releases be sure to read the README.
if it still doesnt work refer to this thread:
https://forum.xda-developers.com/redmi-note-7/help/volte-wifi-calling-redmi-note-7-t3931119
Msprg said:
HI,
I want to ask wether VoLTE is working for you IF you have Global RN7, With custom ROM (and your carrier and SIM supports VoLTE of course).
I have Global RN7 running on xiaomi.eu based ROM.
Before I flashed ROM from xiaomi.eu based the VoLTE was working fine for me, after I disabled VoLTE carrier check. But now with the xiaomi.eu based ROM, VoLTE no longer works for me. I already asked on the forum for my rom - that is miuios.cz - but it seems they do not know what to do with it.
Besides I tried a few other MIUI base ROMs as well as pure android based like LineageOS for example but VoLTE did not work in ANY custom ROM.
So, has it occured to you too, or your VoLTE is working just fine on custom ROM?
Do you know any way to fix this?
Thanks!
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VoLTE *#*#86583#*#*
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