Database Users

Volte is fixed on miui 8 global beta 6.9.9!

Many user are facing problem to enable Volte in new 6.9.9 update.
To fix it You need to insert your sim card ,
Re-enable Volte and reboot your phone,after reboot it will work.
If it doesn't work on first reboot ,i sugget to reboot 2-3 times.
Its working i have personally tested it and other many users enabled Volte by this method.
I am attaching screenshot too!
Post you status below it worked or not?

Sometimes just taking sim out, booting up and power off and putting back sim works. I had similar experience with LP ROMs which had VoLTE available bit not working.
http://forum.xda-developers.com/showthread.php?p=68120469
Sent from my mobile device

Volte problem looks like fixed but still optimization by miui team is needed hope to see it in next beta updates!
:good:

NVDX11 said:
Volte problem looks like fixed but still optimization by miui team is needed hope to see it in next beta updates!
:good:
Click to expand...
Click to collapse
I have installed but I am getting settings force close any idea how to fix

sagar1212 said:
I have installed but I am getting settings force close any idea how to fix
Click to expand...
Click to collapse
I dont know how to fix it,i suggest do a clean installation of rom again via twrp

I flashed 6.9.9. but Im stuck at couldnt check find device status. Anyone know anyway to bypass or remove it?

Another solution to get VoLTE working is, delete the default APN, reboot and manually add the APN. Then turn on VoLTE. It should work.

Volte fix for miui
NVDX11 said:
Many user are facing problem to enable Volte in new 6.9.9 update.
To fix it You need to insert your sim card ,
Re-enable Volte and reboot your phone,after reboot it will work.
If it doesn't work on first reboot ,i sugget to reboot 2-3 times.
Its working i have personally tested it and other many users enabled Volte by this method.
I am attaching screenshot too!
Post you status below it worked or not?
Click to expand...
Click to collapse
VoLte Fix for MIUI :
- Delete APN jionet in settings
- Turnoff mobile data and volte in settings for reliance JIO
- Turn Off JIO sim and Turn On again
- Enable VoLte First Then Mobile Data
- Now go to APN and create APN with Name " JIO " and APN "JIONET"
- Now it should work.
This is how it worked in my redmi note 3 (Snapdragon) MIUI Beta 6.9.9

vjbansi said:
VoLte Fix for MIUI :
- Delete APN jionet in settings
- Turnoff mobile data and volte in settings for reliance JIO
- Turn Off JIO sim and Turn On again
- Enable VoLte First Then Mobile Data
- Now go to APN and create APN with Name " JIO " and APN "JIONET"
- Now it should work.
This is how it worked in my redmi note 3 (Snapdragon) MIUI Beta 6.9.9
Click to expand...
Click to collapse
is it stable? i am getting volte but device keeps losing it time to time..

[GUIDE]How to Enable VoLTE in All LineageOS Builds from 4th Jan to Current Build

After So much Confusion On VoLTE Issue, M making this Complete guide for All LineageOS(CM13) Users..
Soo, In this part We gotta know about Problems because of which VoLTE is broken for some users..
VoLTE issue appeared after @codeworkx sir release Seperate modems & Bootloader for Le2..
Many users Flashed Random Modems & Boatloader without knowing which modem is for which region...
So, Let's clarify which Modem & Bootloader is for which region..
Modem/Baseband :-
1. MPSS.TA.2.0.C18-56437
LINK :- http://eu.host.erwanleboucher.fr/codeworkx/lineage/s2/modems/MPSS.TA.2.0.C18-56437.zip
Region :- Possible Chinese/Russian/India
EUI Based :- No idea
2. MPSS.TA.2.0.C18-61295
LINK :- http://eu.host.erwanleboucher.fr/codeworkx/lineage/s2/modems/MPSS.TA.2.0.C18-61295.zip
Region :- Possible Chinese/Russian/India
EUI Based :- No idea
3. MPSS.TA.2.0.C18-66782_VoLTE_dangerous
LINK :- http://eu.host.erwanleboucher.fr/co...ems/MPSS.TA.2.0.C18-66782_VoLTE_dangerous.zip
Region :- Possible Chinese/Russian/India
EUI Based :- EUI 19s
4. MPSS.TA.2.1.C7-68083
LINK :- http://eu.host.erwanleboucher.fr/codeworkx/lineage/s2/modems/MPSS.TA.2.1.C7-68083.zip
Region :- Possible Chinese/Russian/India
EUI Based :- EUI 20s
Bootloader :-
1. bootloader-19S-india-s2ww
LINK :- http://eu.host.erwanleboucher.fr/codeworkx/lineage/s2/bootloaders/bootloader-19S-india-s2ww.zip
Region :- Specially for India
EUI Based :- EUI 19s
2. bootloader-20S-s2
LINK :- http://eu.host.erwanleboucher.fr/codeworkx/lineage/s2/bootloaders/bootloader-20S-s2.zip
Region :- Specially Chinese/Russian
EUI Based :- EUI 20s
Soo, Now it's clear that Which Bootloader & Modem is based on which region & EUI based.. :fingers-crossed:
Now let's see why many people's facing Issue..
1. Flashed Wrong Modem/Baseband
Issue :- Some peoples flashed wrong Modem for get VoLTE in hurry without knowing which Modem support VoLTE..
Solution :- 2 Solutions
1. As of now, Only 19s Modem/Baseband Just flash it..
2. Flash whole 19s Stock ROM & Flash Lineage/CM
2. Flashed 20s Bootloader
Issue :- Due to Wrong Bootloader, ROMs facing Issues
Solution :- 2 Solutions
1. As of now, Only 19s Modem/Baseband Just flash it..
2. Flash whole 19s Stock ROM & Flash Lineage/CM

This part is we gonna know how to fix VoLTE
FIX 1 :- Little complicate
1. Download Stock 19s ROM
LINK :- Click Here
2. If you are on TWRP by Codeworkx sir, You have to change TWRP..
Download TWRP & Flash it with Current TWRP. Thanks to @ycjeson for Making this Recovery.
LINK :- CLICK HERE
3. Now Copy Stock 19s ROM which you downloaded in 1st step in Your Le2.
4. Flash it with TWRP which we installed in 2nd step.
PS :- Your all data will get wiped after installing Stock ROM.. Even TWRP get replaced with Stock Recovery.. So better take backup of your data.
5. Now, you are on Stock EUI 19s.. Use it for 30 minutes, Do calls, use data..
6. Now, if your Bootloader is Still unlocked, Flash Latest TWRP by codeworkx via PC
Tutorial LINK :- Click Here
7. Now, 3. Download Latest LineageOS build by codeworkx & Copy it in your Le2
LINK :- Click Here
8. Now Boot in TWRP by Holding Volume down + Power buttons.
9. Go in Wipe & select Dalvik Cache, Cache, System, Data & Swipe to Wipe
10. Now go back to main menu & Select Install.
Now navigate to location where You copied LineageOS in 7th step & Swipe to flash..
Most important part start here
After Your device start, you might see You have VoLTE working.. But due to some bug, It will get disappear after 1st Reboot. Soo, Let's fix it..
1. Open Settings -> Sim Settings. Now set Call, Data & SMS to Jio..
2. Now open sim 1/Jio sim cellular setting & Enable Data roaming.
3. Now Go in Access Point Name & Create New APN as given follow.. Only 3 things to set.
1. APN name :- ims
2. APN :- IMS
3. APN Type :- IMS
& save.
PS :- APN & APN type is in Capital letters.. You have to set it as given because due to bug, if APN type get small letter, Setting get wiped after save.
4. Now set Jio Internet as default & close settings.
5. Now open Dialer & click on right top 3 Dots & select setting.
6. Set Make calls with JIO & then click on Sim 1 which is Jio.
7. After that click on IMS settings
8. In IMS setting, Set VT call quality to High
Here you will face 1 bug..
After clicking VT calling service, you will see 2 options :- High & Low..
But even after selection you can't see which is selected.. Just ignore it..
Now go back, Close Dialer & Reboot Phone...
Now open dialer.. You can see little change in sim icon..
Done.... Enjoy VoLTE calling on JIO sim..
FIX 2:- More simple
This fix is for those who are already on LineageOS(M prefer Clean flash)
1. Download 19s Modem Provided by codeworkx
LINK :- Click Here
2. Flash it with TWRP.
Most important part start here
After Your device start, you might see You have VoLTE working.. But due to some bug, It will get disappear after 1st Reboot. Soo, Let's fix it..
1. Open Settings -> Sim Settings. Now set Call, Data & SMS to Jio..
2. Now open sim 1/Jio sim cellular setting & Enable Data roaming.
3. Now Go in Access Point Name & Create New APN as given follow.. Only 3 things to set.
1. APN name :- ims
2. APN :- IMS
3. APN Type :- IMS
& save.
PS :- APN & APN type is in Capital letters.. You have to set it as given because due to bug, if APN type get small letter, Setting get wiped after save.
4. Now set Jio Internet as default APN & close settings.
5. Now open Dialer & click on right top 3 Dots & select setting.
6. Set Make calls with JIO & then click on Sim 1 which is Jio.
7. After that click on IMS settings
8. In IMS setting, Set VT call quality to High
Here you will face 1 bug..
After clicking VT calling service, you will see 2 options :- High & Low..
But even after selection you can't see which is selected.. Just ignore it..
Now go back, Close Dialer & Reboot Phone...
Now open dialer.. You can see little change in sim icon..
Done.... Enjoy VoLTE calling on JIO sim..

again reserved

Cdma not work
China telecom 2g/3g work on CDMA ,But this ROM can't search CDMA ,gms searching use lot battary

chao2142 said:
China telecom 2g/3g work on CDMA ,But this ROM can't search CDMA ,gms searching use lot battary
Click to expand...
Click to collapse
Basically,
You have to Set your network priority for China Telecom Sim From LTE to 3G..
Setting :- Sim Cards :- Cellular Network Setting :- Select your Sim :- Set Preferred Network type from LET to 3G.

CYB3R0ID694 said:
Basically,
You have to Set your network priority for China Telecom Sim From LTE to 3G..
Setting :- Sim Cards :- Cellular Network Setting :- Select your Sim :- Set Preferred Network type from LET to 3G.
Click to expand...
Click to collapse
I tried ,even changed in textmod ,CDMA lte auto or CDMA only or GSM CDMA auto .it still search GSM .,lte is online .but search GSM take much battery

@CYB3R0ID694 I have tried your 2nd method but only LTE means data works after reboot. Volte vanished and not able to call .As well as volte sign missing in dialer icon.

Fix 1 ,will it work after reboot?

Please help
This is working for single sim. I am using one Jio sim and one Idea. Only able to call from one number at a time. If I put one Jio sim only, this process works for me. Together both sims are't working
Pls advice
Thanks .

umangloria said:
@CYB3R0ID694 I have tried your 2nd method but only LTE means data works after reboot. Volte vanished and not able to call .As well as volte sign missing in dialer icon.
Click to expand...
Click to collapse
Check if you have VT calling quality High from Dialer setting..
Looks like it's set to unknown due to some Sim setting..

Verma's said:
This is working for single sim. I am using one Jio sim and one Idea. Only able to call from one number at a time. If I put one Jio sim only, this process works for me. Together both sims are't working
Pls advice
Thanks .
Click to expand...
Click to collapse
Set Calling option to Always ask..
Keep Data Enabled for Roaming & Data to Jio sim..

CYB3R0ID694 said:
Set Calling option to Always ask..
Keep Data Enabled for Roaming & Data to Jio sim..
Click to expand...
Click to collapse
Works perfectly now...
One catch.. After every boot VT setting has gone we again have ro keep to high every time.
Can live with it
Thanks for the solution..

Verma's said:
Works perfectly now...
One catch.. After every boot VT setting has gone we again have ro keep to high every time.
Can live with it
Thanks for the solution..
Click to expand...
Click to collapse
That means after every reboot after to set VT settings to high, does it successfully change? or still gets stuck on unknown?? And after doing this this, is your volte now working fine even after reboot?
currently I'm using both Sims and volte is working fine but after reboot it breaks so I didn't reboot my ph since 3 days

mdfarazb2 said:
That means after every reboot after to set VT settings to high, does it successfully change? or still gets stuck on unknown?? And after doing this this, is your volte now working fine even after reboot?
currently I'm using both Sims and volte is working fine but after reboot it breaks so I didn't reboot my ph since 3 days
Click to expand...
Click to collapse
Yes.. It is working for me. If it doesn't for you.
, try the shortcut master way..
Mine it is working. I did rebooted my phone 4-5 times, did used both methods and every time I am able to use VOLTE and other sim simultaneously.
Let me know if anyone need step wise tutorial

Verma's said:
Yes.. It is working for me. If it doesn't for you.
, try the shortcut master way..
Mine it is working. I did rebooted my phone 4-5 times, did used both methods and every time I am able to use VOLTE and other sim simultaneously.
Let me know if anyone need step wise tutorial
Click to expand...
Click to collapse
Can you send me you apn's screenshot?
And yes Shortcut master way leads to force reboot
And is your vt call quality is set to high (Instead of having both Sims)?

mdfarazb2 said:
Can you send me you apn's screenshot?
And yes Shortcut master way leads to force reboot
Click to expand...
Click to collapse
[/QUOTE]
Give me your email I'd.
Shortcut Master is not force closing for me. It did ask to reboot the device but just ignore it and in 20-30. VOLTE signals is coming back

Give me your email I'd.
Shortcut Master is not force closing for me. It did ask to reboot the device but just ignore it and in 20-30. VOLTE signals is coming back[/QUOTE]
[email protected]
Just now did the steps..i.e. Enabled data roaming for jio.. created IMS apn...set VT to high.. rebooted ph.. volte gone:crying:

mdfarazb2 said:
Give me your email I'd.
Shortcut Master is not force closing for me. It did ask to reboot the device but just ignore it and in 20-30. VOLTE signals is coming back
Click to expand...
Click to collapse
[email protected]
Just now did the steps..i.e. Enabled data roaming for jio.. created IMS apn...set VT to high.. rebooted ph.. volte gone:crying:[/QUOTE]
Don't worry. . and pls check your email

Verma's said:
[email protected]
Just now did the steps..i.e. Enabled data roaming for jio.. created IMS apn...set VT to high.. rebooted ph.. volte gone:crying:
Click to expand...
Click to collapse
Don't worry. . and pls check your email[/QUOTE]
Man just now did the shortcut method... No force reboot/any reboot ... And I can see volte sign in the dialer again!!!
don't know if it'll stay like that even after reboots or not

mdfarazb2 said:
Don't worry. . and pls check your email
Click to expand...
Click to collapse
Man just now did the shortcut method... No force reboot/any reboot ... And I can see volte sign in the dialer again!!!
don't know if it'll stay like that even after reboots or not[/QUOTE]
I tried and on every reboot we have to repeat this. But don't worry, @codeworkx will find out solution and give a bugfree ROM. He is awsm.. Till then let's live up with this bug.

No calls Since VoLTE activated

Hello folks
as you read on the title of the thread,i cant make calls or send messages from my sim now ,and that because i used the command - - - 4636 - i don't remember wat i really changed but it's only data now cant use as normal sim until i switch my second sim as data so the first one works
i have lenovo k6 power nougat stock rom.
any methode to disable volte or reseting the signal band .... ????
help me please

hackstorm1989 said:
Hello folks
as you read on the title of the thread,i cant make calls or send messages from my sim now ,and that because i used the command - - - 4636 - i don't remember wat i really changed but it's only data now cant use as normal sim until i switch my second sim as data so the first one works
i have lenovo k6 power nougat stock rom.
any methode to disable volte or reseting the signal band .... ????
help me please
Click to expand...
Click to collapse
You have probably corrupted your EFS partition which has your baseband information.
You have to restore your baseband.
Check this out. It is for Lenovo K6 Note though the procedure is the same.
https://forum.xda-developers.com/k6-power/how-to/guide-restore-baseband-k6-note-imei-t4007861/
Thanks,
tfr.

[Question] Volte enabler on custom rom

Hello people, got a nasty situation that I'm trying to fix on a custom rom based on LOS (crDroid to be more exact) and that's the Volte enable.
Running stock OOS 9.0.17 managed to do it using this guide: https://forum.xda-developers.com/oneplus-7-pro/help/force-enable-volte-vowifi-t3934227 but since the OP logkit doesn't work on custom ROMs can't access *#*#800#*#*/*#*#801#*#* service menus I can't really use that anymore. Using that guide I managed to activate Volte by activating modem connection with Vodafone India settings. On Rom I'm using now, the only menu I can access is *#*#4636#*#* that shows me the connection type is active at the time, but no working Volte. When I use my 1st sim to make a call, connection switches to H or H+.
Another thing is that on INFO menu the connection type shows after reboot like in screenshot attached even if I have my volte switched on.
Also from that guide I've linked, I can't find that VoEnabler magisk moduke, so I've added the lines manually to build.prop (lines found on GitHub module page)...
Anyone knows a work around for it? Or a way to switch the LTE band to the one Vodafone India use to match the band Orange Romania uses for Volte?

VoLTE - How to restore from persist.img?!

I kinda messed up! The camera in my wife's Pixel Experience 10 ROM was not working and I thought I'll install another ROM and check. Using TWRP, I tried a couple of ROMs by formatting system, cache and dalvik (not data as I was testing). However, I forgot to take EFS + Persist backup!
Now, I could not get a network (VoLTE or otherwise) which was working fine before. I was scared thinking I might have bricked the device but I saw a backup of a persist image in my TWRP folder (backup_[data]_persist.img). Phew! I guess I had taken the backup when I initially installed the PE ROM and used it to get VoLTE afterwards.
As I still have IMEI intact for both the SIMs, I thought of restoring the persist.img. But I am unable to figure out how to do so! I tried restoring it to the system partition and that overwrites the OS. Can someone please help me do this correctly? I have searched XDA and Google but I did not get a proper solution. I will really appreciate it. TIA.
Update: Issue resolved! Somehow VoLTE started working. So, I just took a normal EFS + Persist backup using TWRP.

abhi.eternal said:
I kinda messed up! The camera in my wife's Pixel Experience 10 ROM was not working and I thought I'll install another ROM and check. Using TWRP, I tried a couple of ROMs by formatting system, cache and dalvik (not data as I was testing). However, I forgot to take EFS + Persist backup!
Now, I could not get a network (VoLTE or otherwise) which was working fine before. I was scared thinking I might have bricked the device but I saw a backup of a persist image in my TWRP folder (backup_[data]_persist.img). Phew! I guess I had taken the backup when I initially installed the PE ROM and used it to get VoLTE afterwards.
As I still have IMEI intact for both the SIMs, I thought of restoring the persist.img. But I am unable to figure out how to do so! I tried restoring it to the system partition and that overwrites the OS. Can someone please help me do this correctly? I have searched XDA and Google but I did not get a proper solution. I will really appreciate it. TIA.
Click to expand...
Click to collapse
Actually it won't cause any issue for restoration of presist, but if you want to double sure take a backup of EFS and persist with this command.
Code:
Use the following command to create a backup and save it at /sdcard/persist.img:
dd if=/dev/block/bootdevice/by-name/persist of=/sdcard/persist.img
To restore use the following command:
dd if=/sdcard/persist.img of=/dev/block/bootdevice/by-name/persist
If you have saved a backup using different name then use that name instead.

riyan65 said:
Actually it won't cause any issue for restoration of presist, but if you want to double sure take a backup of EFS and persist with this command.
Code:
Use the following command to create a backup and save it at /sdcard/persist.img:
dd if=/dev/block/bootdevice/by-name/persist of=/sdcard/persist.img
To restore use the following command:
dd if=/sdcard/persist.img of=/dev/block/bootdevice/by-name/persist
If you have saved a backup using different name then use that name instead.
Click to expand...
Click to collapse
Thank you. However, before I could try this, somehow VoLTE started working. So, I just took a normal EFS + Persist backup using TWRP. This might come in handy in future or for someone else though. Cheers!

abhi.eternal said:
Actually it won't cause any issue for restoration of presist, but if you want to double sure take a backup of EFS and persist with this command.
Thank you. However, before I could try this, somehow VoLTE started working. So, I just took a normal EFS + Persist backup using TWRP. This might come in handy in future or for someone else though. Cheers!
Click to expand...
Click to collapse
I did not backup EFS & Persist since I never knew it might be required in future. Now my LTE, Volte, wifi calling functions are not working, also the IMS status says "not registered". What solution will you suggest? Also, can EFS & persist backup of another Moto g5 plus be used? If so, can you share yours.

yudhi3109 said:
I did not backup EFS & Persist since I never knew it might be required in future. Now my LTE, Volte, wifi calling functions are not working, also the IMS status says "not registered". What solution will you suggest? Also, can EFS & persist backup of another Moto g5 plus be used? If so, can you share yours.
Click to expand...
Click to collapse
Never flash someone else persist, doing that just make your device mess. And please provide some more information, like which ROM? How it happened?

riyan65 said:
Never flash someone else persist, doing that just make your device mess. And please provide some more information, like which ROM? How it happened?
Click to expand...
Click to collapse
I was on untouched stock Oreo 8.1 and clean flashed Pixel Experience 10 rom using twrp & nothing else. Now on PE 10 rom, I have issues with Volte, Lte/4G & wifi calling, IMS status(not registered), however I have my IMEI no intact. LTE/4g sign keeps blinking i.e doesn't remain stable, I tried 4g Jio and airtel 4g sims, unable to make/receive calls or even use data. While all services with BSNL sim which uses H/H+ signal works fine.

yudhi3109 said:
I was on untouched stock Oreo 8.1 and clean flashed Pixel Experience 10 rom using twrp & nothing else. Now on PE 10 rom, I have issues with Volte, Lte/4G & wifi calling, IMS status(not registered), however I have my IMEI no intact. LTE/4g sign keeps blinking i.e doesn't remain stable, I tried 4g Jio and airtel 4g sims, unable to make/receive calls or even use data. While all services with BSNL sim which uses H/H+ signal works fine.
Click to expand...
Click to collapse
Do you try checking APNs in setting for Airtel and Jio?

riyan65 said:
Do you try checking APNs in setting for Airtel and Jio?
Click to expand...
Click to collapse
The APNs are default and looks ok for 4g connectivity, however plz share me any specific changes in APN for 4G sims for my type of issue. (Currently it seems 4G services are not working at all even though the sims are able to catch LTE/4G network.)

riyan65 said:
Do you try checking APNs in setting for Airtel and Jio?
Click to expand...
Click to collapse
After many trials, I found that the problem is only with Jio sim(all other sims are working fine and I am able to use all services Volte, lte, data & calling). While with Jio, now I am able to use its 4G data service, but unable to make/receive calls & SMS.

yudhi3109 said:
After many trials, I found that the problem is only with Jio sim(all other sims are working fine and I am able to use all services Volte, lte, data & calling). While with Jio, now I am able to use its 4G data service, but unable to make/receive calls & SMS.
Click to expand...
Click to collapse
So, now you need to install stock ROM, get the volte working on stock then take a backup of EFS and persist in stock. Install custom ROM and check if Jio sim working, if not, restore the backup of EFS and persist. Jio sim will start working.