Volte loosing issue in oreo roms - Lenovo P2 Questions & Answers

i have tried each and every oreo rom available for lenovo p2 and using jio roaming
i am facing volte loosing issue after certain reboots in every rom,
i tried swapping sim cards, flashing stock rom using fastboot and did all the ota updates, tried adding ims to apn type, adding some build prop lines and also tried vreating new apn ! still no success
not facing same issue in los by code elixir but dont want to use it as it has less customizations.
any other solution available for this problem ?
i know most of the developers dont use volte so dont care much about volte but most of the indians are using Jio som cards for calling and internet accessing purpose
So devs i humbly request you to find solution for this issue...

Ya its a big issue in using Oreo rom. I am back to Lineage os 14.1 .

Flash the modem of the stock ROM when you lose the connectivity. It worked for me.

appy.79 said:
Flash the modem of the stock ROM when you lose the connectivity. It worked for me.
Click to expand...
Click to collapse
I don't have backup of stock ROM. Did u download it??

bhupeshbb said:
i have tried each and every oreo rom available for lenovo p2 and using jio roaming
i am facing volte loosing issue after certain reboots in every rom,
i tried swapping sim cards, flashing stock rom using fastboot and did all the ota updates, tried adding ims to apn type, adding some build prop lines and also tried vreating new apn ! still no success
not facing same issue in los by code elixir but dont want to use it as it has less customizations.
any other solution available for this problem ?
i know most of the developers dont use volte so dont care much about volte but most of the indians are using Jio som cards for calling and internet accessing purpose
So devs i humbly request you to find solution for this issue...
Click to expand...
Click to collapse
I got the same problem.

any solutions?

Please can somebody post the modem for the S251 stock ROM.

Sutcliffe9 said:
Please can somebody post the modem for the S251 stock ROM.
Click to expand...
Click to collapse
Here is the file https://drive.google.com/file/d/1O42-tqX7StyScOuKRpakEH44-xt9tBri/view?usp=drivesdk

[email protected] said:
Ya its a big issue in using Oreo rom. I am back to Lineage os 14.1 .
Click to expand...
Click to collapse
VoLTE is a PIA for developer's. not just because the code is proprietary (meaning no access to the source code).
the Dev's so far have not focused to fix VoLTE for Oreo hence the issues. they focus on other major more important fixes first.
Oreo is a major re-write to C++ compared to Nougat.
VoLTE on 14.1 is stable because the Dev's have figured out a proper way to make it work. Which is not yet the case with Oreo. so if you want stable VoLTE stick with Official LOS 14.1.

celoxocis said:
VoLTE is a PIA for developer's. not just because the code is proprietary (meaning no access to the source code).
the Dev's so far have not focused to fix VoLTE for Oreo hence the issues. they focus on other major more important fixes first.
Oreo is a major re-write to C++ compared to Nougat.
VoLTE on 14.1 is stable because the Dev's have figured out a proper way to make it work. Which is not yet the case with Oreo. so if you want stable VoLTE stick with Official LOS 14.1.
Click to expand...
Click to collapse
Okay. Thankyou for info btw

appy.79 said:
Flash the modem of the stock ROM when you lose the connectivity. It worked for me.
Click to expand...
Click to collapse
How to flash stock modem .
I am on AEX.
---------- Post added at 07:50 AM ---------- Previous post was at 07:46 AM ----------
I think AOSP roms have volte problems.
When I am on AOKP os volte working fine..
Yesterday I flashed AEX which is based on AOSP.
Volte gone.

One way to get back the volte is by changing the sim card from 1 to 2 or vice versa. This will get you volte. And then if you want to change the sim cards back to original then do so. The volte will stick.
Other one is, flash the stock ROM modem or an LOS modem. It worked for me with stock and RR modem.

appy.79 said:
One way to get back the volte is by changing the sim card from 1 to 2 or vice versa. This will get you volte. And then if you want to change the sim cards back to original then do so. The volte will stick.
Other one is, flash the stock ROM modem or an LOS modem. It worked for me with stock and RR modem.
Click to expand...
Click to collapse
How to flash modem. Can u please explain

Flash the modem backup file using TWRP.

Related

Using Reliance JIO 4G sim on the Oneplus 3

So I purchased a Reliance Jio sim for my phone. Thing is, it works perfectly fine on Oxygen OS. It did work properly on CM based roms initially, but now it connects, however in a weird way. I can send and receive messages on whatsapp and fb messenger. The sim icon shows the LTE symbol with the "!" sign next to it. Like as if it's not properly connected to the network, I'd say. However, on reflashing Oxygen, the sim worked perfectly fine. Any help? The sim does work in the Band 40, but still i have the problem mentioned above. It's really frustrating as i'd like to stay on cm. Are there any work arounds? Would flashing the stock modem over a custom rom help? Would that affect the performance of a custom rom in anyway?? Thanks in advance!
kash296 said:
So I purchased a Reliance Jio sim for my phone. Thing is, it works perfectly fine on Oxygen OS. It did work properly on CM based roms initially, but now it connects, however in a weird way.
Click to expand...
Click to collapse
Sorry I do not have answer but have the exact same question. Also, I have additional ones: even with Oxygen OS, did Jio work from *both* SIM slots (or only slot 1)? Did you make voice call by VoLTE (or Jio's app)? I too want to move to CM as soon as everything works.
kousik said:
Sorry I do not have answer but have the exact same question. Also, I have additional ones: even with Oxygen OS, did Jio work from *both* SIM slots (or only slot 1)? Did you make voice call by VoLTE (or Jio's app)? I too want to move to CM as soon as everything works.
Click to expand...
Click to collapse
Well, i didn't try it from the second slot on Oxygen, but i did on CM13. The signal was full, and i am sure it'd work. I haven't tried the VoLTE feature properly yet, so i cannot comment. And i actually ended up finding a solution to my own problem, where in there was a proxy which was triggered in the apn. God knows how that happened. Anyway, it'd be helpful if anyone else who has experienced problems could offer some advice. Cheers!
kash296 said:
So I purchased a Reliance Jio sim for my phone. Thing is, it works perfectly fine on Oxygen OS. It did work properly on CM based roms initially, but now it connects, however in a weird way. I can send and receive messages on whatsapp and fb messenger. The sim icon shows the LTE symbol with the "!" sign next to it. Like as if it's not properly connected to the network, I'd say. However, on reflashing Oxygen, the sim worked perfectly fine. Any help? The sim does work in the Band 40, but still i have the problem mentioned above. It's really frustrating as i'd like to stay on cm. Are there any work arounds? Would flashing the stock modem over a custom rom help? Would that affect the performance of a custom rom in anyway?? Thanks in advance!
Click to expand...
Click to collapse
Which CM based roms u used? I tried pacman rom and rr remix rom but jio was unable to show any data connection!
kash296 said:
So I purchased a Reliance Jio sim for my phone. Thing is, it works perfectly fine on Oxygen OS. It did work properly on CM based roms initially, but now it connects, however in a weird way. I can send and receive messages on whatsapp and fb messenger. The sim icon shows the LTE symbol with the "!" sign next to it. Like as if it's not properly connected to the network, I'd say. However, on reflashing Oxygen, the sim worked perfectly fine. Any help? The sim does work in the Band 40, but still i have the problem mentioned above. It's really frustrating as i'd like to stay on cm. Are there any work arounds? Would flashing the stock modem over a custom rom help? Would that affect the performance of a custom rom in anyway?? Thanks in advance!
Click to expand...
Click to collapse
I'm using jio sim without any issues on CM13
Palauv said:
Which CM based roms u used? I tried pacman rom and rr remix rom but jio was unable to show any data connection!
Click to expand...
Click to collapse
tried blackjubel RR and official CM. It's working fine now for me.
kash296 said:
tried blackjubel RR and official CM. It's working fine now for me.
Click to expand...
Click to collapse
Isnt official RR and sultan xda's cm13 work then? Okay I ll try them
Palauv said:
Isnt official RR and sultan xda's cm13 work then? Okay I ll try them
Click to expand...
Click to collapse
they should work. I did not test those builds out because i wanted to use the oxygen OS camera port. It does work in the official RR, but as i downloaded the blackjubel build, i figured i don't need to test the official one for now. I used to use it before and it's an awesome rom. As for sultan's rom, loved the build, but my desire to use the stock oxygen camera made me stick with official CM.
kash296 said:
they should work. I did not test those builds out because i wanted to use the oxygen OS camera port. It does work in the official RR, but as i downloaded the blackjubel build, i figured i don't need to test the official one for now. I used to use it before and it's an awesome rom. As for sultan's rom, loved the build, but my desire to use the stock oxygen camera made me stick with official CM.
Click to expand...
Click to collapse
Hey I just clean flashed rr-jubel latest version rom with ex elemental kernel 0.26(cm) and then aroma gapps and then oxygen camera port v3.0. awesome rom,everything working fine but my jio sim is not connecting to data connection!!! I tried to call...call works but no LTE and VOLTE sign on the above bar showing and no data connection as it was in oxygen os a while ago!!! What to do? I rebooted too...:crying::crying::crying:
Palauv said:
Hey I just clean flashed rrjubel latest version with ex kernel 0.26(cm) and aroma gapps and oxygen camera port v3.0. awesome rom but my jio sim is not connecting to data connection!!! I tried to call...call works but no LTE and VOLTE sign as it was in oos a while ago!!! What to do? I rebooted too... :crying:
Click to expand...
Click to collapse
Uh check the APN settings. That's the problem. What i did was to remove the proxy. LTE works fine for me now.
kash296 said:
Uh check the APN settings. That's the problem. What i did was to remove the proxy. LTE works fine for me now.
Click to expand...
Click to collapse
Mind help me where to find and uncheck the apn settings please? please guide...Thanx in advance
Palauv said:
Mind help me where to find and uncheck the apn settings please? please guide...Thanx in advance
Click to expand...
Click to collapse
In settings, go to sim cards. You'll see sim 1 and sim 2 settings. Depending on which slot your jio is in, select that accordingly. You can see the option for APNs there.
Palauv said:
Hey I just clean flashed rr-jubel latest version rom with ex elemental kernel 0.26(cm) and then aroma gapps and then oxygen camera port v3.0. awesome rom,everything working fine but my jio sim is not connecting to data connection!!! I tried to call...call works but no LTE and VOLTE sign on the above bar showing and no data connection as it was in oxygen os a while ago!!! What to do? I rebooted too...:crying::crying::crying:
Click to expand...
Click to collapse
check if APN is actually selected
kash296 said:
In settings, go to sim cards. You'll see sim 1 and sim 2 settings. Depending on which slot your jio is in, select that accordingly. You can see the option for APNs there.
Click to expand...
Click to collapse
There was no apns there..so I created one. and now LTE is showing and data on. but still no VOLTE icon. I miss it :/ anyway thanx.
---------- Post added at 05:28 PM ---------- Previous post was at 05:28 PM ----------
emptyragnarok said:
check if APN is actually selected
Click to expand...
Click to collapse
Actually there were no APN s .. So I created one. Now data is working
As Jio sim uses 4G data for everything that includes voice, sms and data, it is very crucial that u have a proper APN for the sim.
Name: Jio or Jio4G
APN : jionet
Server : just type 3w dot Google dot com
Authentication Type : None
APN Type : default,supl
APN Protocol : IPv4/IPv6
APN Rising Protocol : IPv4/IPv6
Beater : unspecified
Create a new APN with the following settings and than u can either restart the phone or just set airplane mode and than back to normal.
Palauv said:
There was no apns there..so I created one. and now LTE is showing and data on. but still no VOLTE icon. I miss it :/ anyway thanx.
---------- Post added at 05:28 PM ---------- Previous post was at 05:28 PM ----------
Actually there were no APN s .. So I created one. Now data is working
Click to expand...
Click to collapse
Volte should be working bro, use an app which provides that facility. You sure?
kash296 said:
Volte should be working bro, use an app which provides that facility. You sure?
Click to expand...
Click to collapse
Yes m sure...no volte icon appears on screen when I use internet or call someone!
any specific apps u know works only on volte?
ansarirj said:
As Jio sim uses 4G data for everything that includes voice, sms and data, it is very crucial that u have a proper APN for the sim.
Name: Jio or Jio4G
APN : jionet
Server : just type 3w dot Google dot com
Authentication Type : None
APN Type : default,supl
APN Protocol : IPv4/IPv6
APN Rising Protocol : IPv4/IPv6
Beater : unspecified
Create a new APN with the following settings and than u can either restart the phone or just set airplane mode and than back to normal.
Click to expand...
Click to collapse
Thanx for the settings but still volte not showing after restart!
Palauv said:
Yes m sure...no volte icon appears on screen when I use internet or call someone!
any specific apps u know works only on volte?
Click to expand...
Click to collapse
I get the icon in the in call UI. The VoLTE icon appears while using Oxygen OS. Try using the Jio App, one of them is purely meant for VoLTE
I was having a similar problem when I flashed art97 rom (I might have the name wrong but it's similar to that). I have tried other custom ROMs based on CM13 (like resurrection rom) and VoLTE does show up.

[HELP] VoLTE issue

Jio sim user here. Everything was fine until I decided to move to another ROM from Community Build. Found that VoLTE is not working on any other ROM, not even Oxygen stock. I tried locking bootloader and going back completely to stock but still VoLTE is dead. Don't know what I messed up but any help would be appreciated.
Every thing is working fine with freedom os try that. Go jio
shiva(@[email protected]) said:
Every thing is working fine with freedom os try that. Go jio
Click to expand...
Click to collapse
You're using Freedom os 1.6 or 1.7?
1.7
---------- Post added at 12:18 PM ---------- Previous post was at 12:17 PM ----------
jashmon said:
You're using Freedom os 1.6 or 1.7?
Click to expand...
Click to collapse
1.7
http://forum.xda-developers.com/oneplus-3/how-to/oneplus-3-how-to-unlock-bootloader-t3398733
Restore your EFS backup. Reboot. Volte will start working.
kuldeeps48 said:
http://forum.xda-developers.com/oneplus-3/how-to/oneplus-3-how-to-unlock-bootloader-t3398733
Restore your EFS backup. Reboot. Volte will start working.
Click to expand...
Click to collapse
But I didn't backup efs unfortunately
Install the Jio 4G Voice app. Its the best hassle free method.
AJayOP2 said:
Install the Jio 4G Voice app. Its the best hassle free method.
Click to expand...
Click to collapse
if you don't have a proper reply please don't comment. I asked about VoLTE not the Jio app. I know I can use it too.
At the moment no other Marshmallow ROM for the oneplus 3 supports VoLTE by itself expect the Community Builds. All 7.0 Nougat ROMs do give VoLTE support. I myslef am on AOKP N.
Flash a Nougat ROM and you'll get back your VoLTE.
I'm on CB 3.5.3 and I can't see VoLTE settings, here two pictures:
What's the problem?
Is the "Enhanced 4G LTE Mode" On under the Cellular networks setting?
No, I haven't.
VoLTE work around on stock / CB
Clean Flash Stock / CB rom using twrp .
You first have to extract 4 files contained in the zip file attached .
Now make a efs backup from twrp
Now go in twrp>backups>device serial number folder>the most recent backup you made folder
And paste the 4 files and replace them with your efs files Then restore EFS back up only using twrp.
That worked for my friend on 3.2.6 stock who completely lost VoLTE , tried every thing found this solution by hit and trail hope it works for you as well.
AJayOP2 said:
At the moment no other Marshmallow ROM for the oneplus 3 supports VoLTE by itself expect the Community Builds. All 7.0 Nougat ROMs do give VoLTE support. I myslef am on AOKP N.
Flash a Nougat ROM and you'll get back your VoLTE.
Click to expand...
Click to collapse
Misleading
I can't find the cellular network settings options after the nougat update on my OnePlus 3
Did you try stock Nougat? I can no longer see the 'VoLTE' icon in Nougat but voice calls work fine without the need of any app. In Marshmallow VoLTE icon used to appear. If you see '"Enhanced 4G LTE Mode" option in cellular settings menu VoLTE should work.
geekmax said:
Did you try stock Nougat? I can no longer see the 'VoLTE' icon in Nougat but voice calls work fine without the need of any app. In Marshmallow VoLTE icon used to appear. If you see '"Enhanced 4G LTE Mode" option in cellular settings menu VoLTE should work.
Click to expand...
Click to collapse
Maybe im selecting the wrong option but even though i ticked the enhanced lte option im still not getting VoLte on nougat.
As soon as I initiate a call it automatically drops to 3g.
Masterx9 said:
Maybe im selecting the wrong option but even though i ticked the enhanced lte option im still not getting VoLte on nougat.
As soon as I initiate a call it automatically drops to 3g.
Click to expand...
Click to collapse
Strange. Not sure why it is happening so. I got a Nexus 5x running Nougat too and it also doesn't show any VoLTE icon but everything works fine. Data, VoLTE calls etc.

VoLTE ISSUE

so in the past 24 hours i have downloaded 5 roms with volte support for my zuk z2 plus but the volte is not working in any of the rom can this be fixed if not do you guys have a way to go back to ZUI
Dragonlord07 said:
so in the past 24 hours i have downloaded 5 roms with volte support for my zuk z2 plus but the volte is not working in any of the rom can this be fixed if not do you guys have a way to go back to ZUI
Click to expand...
Click to collapse
What was the last stock rom you tried? You must enable volte on stock rom and then flash custom rom else volte won't work (personal experience)
If you have twrp backup of stock then restore it, enable volte in settings and when you get volte sign (HD next to signal) goto twrp and wipe everything and flash custom rom
hp5942 said:
What was the last stock rom you tried? You must enable volte on stock rom and then flash custom rom else volte won't work (personal experience)
If you have twrp backup of stock then restore it, enable volte in settings and when you get volte sign (HD next to signal) goto twrp and wipe everything and flash custom rom
Click to expand...
Click to collapse
zui 2.5 but no backup:crying::crying::crying::crying::crying: but the last i remember volte was enabled
Dragonlord07 said:
zui 2.5 but no backup:crying::crying::crying::crying::crying: but the last i remember volte was enabled
Click to expand...
Click to collapse
Was volte enabled with 4G sim inserted? You can flash this stock rom (use the one which is your variant) and enable VoLTE and once you get HD symbol (you have to make a reboot after enabling VoLTE) install custom rom
https://forum.xda-developers.com/le...t/deodexed-z2-plus-nougat-2-5-334-st-t3594483
hp5942 said:
Was volte enabled with 4G sim inserted? You can flash this stock rom (use the one which is your variant) and enable VoLTE and once you get HD symbol (you have to make a reboot after enabling VoLTE) install custom rom
https://forum.xda-developers.com/le...t/deodexed-z2-plus-nougat-2-5-334-st-t3594483
Click to expand...
Click to collapse
thanks man ill try this
Dragonlord07 said:
thanks man ill try this
Click to expand...
Click to collapse
does volte worked
Same problem here... flashed stock and 2 other custom roms, still not working...any other suggestions will be really appreciable!
Dragonlord07 said:
so in the past 24 hours i have downloaded 5 roms with volte support for my zuk z2 plus but the volte is not working in any of the rom can this be fixed if not do you guys have a way to go back to ZUI
Click to expand...
Click to collapse
Did Volte work? How did you fix it?
hp5942 said:
What was the last stock rom you tried? You must enable volte on stock rom and then flash custom rom else volte won't work (personal experience)
If you have twrp backup of stock then restore it, enable volte in settings and when you get volte sign (HD next to signal) goto twrp and wipe everything and flash custom rom
Click to expand...
Click to collapse
i have the backup of the Stock ZUI ,volte is also enabled there,but when i shift to a custom rom volte doesnot work.
i have tried different roms like- AICP, Resseraction Remix, AEX rom. but everywhere the same issue
aslibishal said:
Resseraction Remix
Click to expand...
Click to collapse
:laugh:
fallen.kn said:
:laugh:
Click to expand...
Click to collapse
sorry spelling mistake......resurrection remix.
kindly let me know if u have any fix for the problem!
aslibishal said:
sorry spelling mistake......resurrection remix.
kindly let me know if u have any fix for the problem!
Click to expand...
Click to collapse
Sorry you just made me laugh there
I'm also sorry that I can't really help you since I do not have VOLTE in my Country.
Everything I know is what you said you have done already.
aka Flash Stock ZUI, enable Volte (try if its working), shutdown the device and flash a Custom ROM you like.
You could try to get your SIM in Slot 1 (if it isn't already) and then redo the process.
Also using QFIl to flash the latest Stock ZUI Version (I suggest you to use the Indian Version, this will lock your bootloader again)
And then redo the whole process.
Just change the sim slot. You are probably using it in Slot 2.
n00b_dr0id said:
Just change the sim slot. You are probably using it in Slot 2.
Click to expand...
Click to collapse
I am using it in sim1 slot only.
The problem started all of a sudden. I was using the AICP rom,then there was an OTA update from their end so i updated it ,but after that volte doesnot work.Then i changed many ROM's but nowhere volte works except the stock one(which is very ****ty).
Did anyone find a fix for this problem?
My solutions
1. Install nougat update from lenovo i.e 2.5
2. Then enable volte in sim settings
3. Then unlock the bootloader again
4. Install the twrp
5. Install AEX(my suggestion)
6. Install micro gapps
7. Then reboot and please let every process complete dont skip anything let the phone detect the Networks
8. Saying it once again dont skip or hurry while booting let it complete and then click next
9. After booting enable volte in sim settings enhanced 4g lte mode
10. If it doesn't work for you then try the vpn settings which i have attached as a screenshot with this post
There you go.
FYI
i an also having same problem.. i was using AEX and suddenly my VOLTE disappeared........then i have flash 4 to 5 ROMS but nothing worked.............but i have tried my friends JIO sim which is working in my mobile
now what should i do??
plzz help
Vishalu said:
i an also having same problem.. i was using AEX and suddenly my VOLTE disappeared........then i have flash 4 to 5 ROMS but nothing worked.............but i have tried my friends JIO sim which is working in my mobile
now what should i do??
plzz help
Click to expand...
Click to collapse
Same here. AEX messed it up, only solution is go flash stock Rom and then re-install whatever Rom you want.
Hay guys solution 100% working for zuk z2 plus Indian version
Switch off your phone
Remove sim slot
Put jio sim on slot 2 and other sim on slot 1
Switch on your phone
Disable volte from settings
Make a call from sim 1
Switch off mobile again
Remove sim slot put jio sim in slot 1
Switch on ur phone
Switch volte on
That's it
I did this just now and jio sim is working again
I saw this video on

VOLTE on Reliance Jio

Can someone please help me with enabling VOLTE on my OP3 running akhil narang's latest RR build. It stays on LTE and calls through Jio don't connect. I have enhanced LTE enabled and also tried editing build prop. please help.
Flash oos or open beta first. Boot up completely. U will have volte enabled. Then flash the custom ROM ..
There is an issue with custom roms .. none of them can initialise IMS properly and registration fails. However if you flash the stock oos or open beta first, the IMS registration works. And I suppose, it just sticks when you boot the next time with a custom rom.
Don't ask me the reason. It just works for me this way everytime without a fail.
candiesdoodle said:
Flash oos or open beta first. Boot up completely. U will have volte enabled. Then flash the custom ROM ..
There is an issue with custom roms .. none of them can initialise IMS properly and registration fails. However if you flash the stock oos or open beta first, the IMS registration works. And I suppose, it just sticks when you boot the next time with a custom rom.
Don't ask me the reason. It just works for me this way everytime without a fail.
Click to expand...
Click to collapse
Will it also work after a clean flash? Because if it does then it can be solved via some other method too
Sent from my OnePlus 3 using XDA Labs
arnabbiswasalsodeep said:
Will it also work after a clean flash? Because if it does then it can be solved via some other method too
Click to expand...
Click to collapse
Yeah you need to clean flash. Both. First clean flash oos/ob. Then clean flash custom ROM.
My theory is that it has to do with the firmware. So if you stay on the same firmware when moving from oos/ob to custom ROM, then volte should work fine. If you flash a different firmware then the custom ROM will not be able to initiate and complete the IMS registeration ... But as I said just a theory
Why dont you just try flashing the latest firmware which is recommended for your ROM..??
candiesdoodle said:
Yeah you need to clean flash. Both. First clean flash oos/ob. Then clean flash custom ROM.
My theory is that it has to do with the firmware. So if you stay on the same firmware when moving from oos/ob to custom ROM, then volte should work fine. If you flash a different firmware then the custom ROM will not be able to initiate and complete the IMS registeration ... But as I said just a theory
Click to expand...
Click to collapse
Then i think this should work (i don't own a 4g sim so can't try)
https://forums.oneplus.net/threads/volte.382867/page-5#post-15489940
Sent from my OnePlus 3 using XDA Labs
arnabbiswasalsodeep said:
Then i think this should work (i don't own a 4g sim so can't try)
https://forums.oneplus.net/threads/volte.382867/page-5#post-15489940
Click to expand...
Click to collapse
So did it work?
candiesdoodle said:
Yeah you need to clean flash. Both. First clean flash oos/ob. Then clean flash custom ROM.
My theory is that it has to do with the firmware. So if you stay on the same firmware when moving from oos/ob to custom ROM, then volte should work fine. If you flash a different firmware then the custom ROM will not be able to initiate and complete the IMS registeration ... But as I said just a theory
Click to expand...
Click to collapse
I've the same problem and I am having airtel volte. It doesn't work on any custom rom but as I move on OOS is just works fine. I am currently on Oxygen OS beta 27. I'll try your method . what all the things I have to wipe before flashing custom ROM ? And also should I flash again the firmware?
thanks!
Sharfuddin Ahmed said:
I've the same problem and I am having airtel volte. It doesn't work on any custom rom but as I move on OOS is just works fine. I am currently on Oxygen OS beta 27. I'll try your method . what all the things I have to wipe before flashing custom ROM ? And also should I flash again the firmware?
thanks!
Click to expand...
Click to collapse
First check if Airtel volte is supported by the custom ROM.
If yes then try wiping system, data and cache.
No need to flash firmware
candiesdoodle said:
First check if Airtel volte is supported by the custom ROM.
If yes then try wiping system, data and cache.
No need to flash firmware
Click to expand...
Click to collapse
Custom roms dont really support carriers persay. Most roms dont support VOLTE, at least not the India based carriers. Best bet would be look for one that supports VOLTE on T-mobile and see if you can work with the dev. Other then that you will be hard pressed to find one that work with India VOLTE. Its just not something that is tested or cared about by most developers.
I think it's firmware related.So flash the latest Indian firmware.Also Try roms developed by Indian devs.They will try to support all carriers in India.
situ1962 said:
I think it's firmware related.So flash the latest Indian firmware.Also Try roms developed by Indian devs.They will try to support all carriers in India.
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That will be a problem as most of the devs on different teams are not from India nor are they willing to add closed sourced code just to get something working that only one country uses.
candiesdoodle said:
First check if Airtel volte is supported by the custom ROM.
If yes then try wiping system, data and cache.
No need to flash firmware
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Yes Bro.. I've tried. but no luck :crying:

Best Oreo ROM for Z2 Plus right now?

I am on stock rom. Can anyone tell be most stable Oreo Rom right. Atleast GPS, Dual SIM and Volte should work prefectly.
singhinbox said:
I am on stock rom. Can anyone tell be most stable Oreo Rom right. Atleast GPS, Dual SIM and Volte should work prefectly.
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Jaguar
GopalKaul said:
Jaguar
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Seriously?? Without testing... ROM is just out maybe 1/2 hr before and you declared it best.
Strange brother!
DivyanshuJ said:
Seriously?? Without testing... ROM is just out maybe 1/2 hr before and you declared it best.
Strange brother!
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Just suggesting
I tried all the oreo ROMs (except Jaguar- well I installed it but didn't find some things according to my taste, so uninstalled it) , you can surely try it.. considering OP's work on jaguar nougat I am sure it will be good.
Anyway, coming back to question. I will say as of now-
1) AEX (most stable and bugless amongst all), only rear camera portrait mode as of now.
2) Validus (first to have both front and rear portrait mode), just 1-2 bugs like dt2w not working, lockscreen cannot be waken up using home button, only using power button, some heating while charging - compared to other ROMs), otherwise quite stable and good performing rom. I would have sticked to it if not for the bugs I mentioned above.
Here you have both's pros and cons.. upto you now.
Another stupid thread
Jaguar r14. The most stable rom for it. No doubts
Been using for quite sometime. Evrythng works fine. The device runs so smooth now.
type of use
kumarshubham4u said:
Jaguar r14. The most stable rom for it. No doubts
Been using for quite sometime. Evrythng works fine. The device runs so smooth now.
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are you a heavy user and what about sot
Try AICP 13.1 based on Android 8.1. It's working fine with GPS, VoLTE as of now! Been using it for a week now! Very smooth experience.
It's pointless to discuss about what ROM is the best, as most ROMs cater to different needs.
It's like a person asking what's the best food or what's the best religion. It's a subjective matter.
That being said, if you're just looking for recommendations for ROMs to try out, you'd first want to understand how you want your device to perform, i.e. how your use cases for the device are like.
If you are a heavy gamer, avoid LOS-based ROMs as they tend to cramp the device performance. Look for Vulcan-enabled ROMs if you use emulators like PPSSPP.
If you are a person who focuses on long lasting battery, some of the minimal ROMs like Omni or Validus will help you out.
Best Oreo ROM
singhinbox said:
I am on stock rom. Can anyone tell be most stable Oreo Rom right. Atleast GPS, Dual SIM and Volte should work prefectly.
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Click to collapse
I'll suggest you to install AEX 5.1 Latest Beta build.
It has support for camera 2 API and works very smoothly. I didn't face any issues till now. Dual SIM , Volte, GPS everything thing works perfectly fine.
Link:
https://www.google.co.in/amp/s/foru...pment/rom-aospextended-rom-v5-0-t3683254/amp/
safim8224 said:
I'll suggest you to install AEX 5.1 Latest Beta build.
It has support for camera 2 API and works very smoothly. I didn't face any issues till now. Dual SIM , Volte, GPS everything thing works perfectly fine.
Link:
https://www.google.co.in/amp/s/foru...pment/rom-aospextended-rom-v5-0-t3683254/amp/
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Are Volte outgoing calls are working for you?
robikewl said:
Are Volte outgoing calls are working for you?
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Yeah everything is working fine!
safim8224 said:
Yeah everything is working fine!
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I am using JIO SIM for Volte with latest build AospExtended-v5.1-z2_plus-20180117-2307-OFFICIAL and Baseband 1.76, outgoing calls not working for me.
Are you using the same ROM and baseband, your volte provider also JIO?
robikewl said:
I am using JIO SIM for Volte with latest build AospExtended-v5.1-z2_plus-20180117-2307-OFFICIAL and Baseband 1.76, outgoing calls not working for me.
Are you using the same ROM and baseband, your volte provider also JIO?
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Click to collapse
Try to update the baseband . I'm using Baseband 2.0.079 . Even before I updated the baseband Volte was fine with JIO sim.
Try to use this link for the baseband 2.0 and don't worry , the phone vibrates too much while boot.
https://drive.google.com/file/d/1mHdf2kc0ARpRO6kxAKiI3dotAVY0TJdM/view
Hope this helps!
safim8224 said:
Try to update the baseband . I'm using Baseband 2.0.079 . Even before I updated the baseband Volte was fine with JIO sim.
Try to use this link for the baseband 2.0 and don't worry , the phone vibrates too much while boot.
https://drive.google.com/file/d/1mHdf2kc0ARpRO6kxAKiI3dotAVY0TJdM/view
Hope this helps!
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are u sure u are in the latest aex?
Please ! Don't do this ...
singhinbox said:
I am on stock rom. Can anyone tell be most stable Oreo Rom right. Atleast GPS, Dual SIM and Volte should work prefectly.
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Click to collapse
Why is everyone creating new thread every single day asking which is good Ron ? Please don't do this . Everyone has been warned. Don't spam here. Go throught existing threads and mention your questions there . It's okay if we have one spamming thread than having 100's of them .
Let me be clear that I'm not specifically referring to the op.
It's for everyone . Forum moderators can't go through XDA everyday and delete such snapping threads.
Thanks,
Andromuks
Bootleggers is best till now sur
error
AkhilKK said:
Try AICP 13.1 based on Android 8.1. It's working fine with GPS, VoLTE as of now! Been using it for a week now! Very smooth experience.
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Click to collapse
error 7 by twrp in z2 plus
stupendousmen said:
error 7 by twrp in z2 plus
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Click to collapse
Update your TWRP to latest version

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