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Yotaphone 2 signal boost trick/unlock band ?

Helo from Slovenia,
perhaps i found a way to boost signal or unlock bands in Yotaphone 2.
Go to android secret menu *#*#4636#*#*
Then go information about phone menu and scroll down.
There is a option for choosing priority band, normaly its choosen LTE/WCDMA
Klick on this and switch the options to TD-SCDMA,GSM/WCDMA and LTE or TD-SCDMA,LTE,CDMA,EvDo GSM, WCDMA
Now watch the signal boosting
I checked same locations driving yesterday and today with car. Where i yesterday got no signal, today i got fully edge signal.
And no signal outage today no matter the location
Check this option and let me know if it works there too. I tried on Android 4.4.3 and 5 work both.

I put the first one, but how can I see the difference? the problems was not getting the 2G signal at all if I force in 2G. But if I force it now, your suggested settings will change.
What is the difference between TD-SCDMA,GSM/WCDMA and LTE or TD-SCDMA,LTE,CDMA,EvDo GSM, WCDMA?
May I ask you which mobile operator you have and which radio & firmware you use on your YotaPhone2?

TheArt. said:
I put the first one, but how can I see the difference? the problems was not getting the 2G signal at all if I force in 2G. But if I force it now, your suggested settings will change.
What is the difference between TD-SCDMA,GSM/WCDMA and LTE or TD-SCDMA,LTE,CDMA,EvDo GSM, WCDMA?
May I ask you which mobile operator you have and which radio & firmware you use on your YotaPhone2?
Click to expand...
Click to collapse
you have to go to spots/locations where you got no signal before and try it now ?

Setting your phone to the wrong settings so it fails over to 2G will no doubt improve your signal strength no end. But personally I would prefer to get fast internet on the move, and leave your radio settings well alone!
There are apps you can get that are called 'signal boosters' they just work by turning off your phone radio and then on again. If you were not connected to a nearby cell but one farther away this will 'boost your signal' ...
You're probably experiencing either or both of these effects. as well as the 4G effect - which is that if you have a local 4G aerial all the cellphones that can do so will be connecting to that, leaving you free to connect to an empty 3G cell instead with lots of bandwidth. Maybe not what you had planned to do, but actually improving your performance by setting the wrong settings

Did anyone already find the secret USB menu code to put the device into Modem mode? As the YotaPhone has a Qualcomm processor, this could be used to enable additional LTE bands, which really would help with reception like in [GUIDE] Add all GSM and LTE bands to your phone.

seems cool! We have to test

Crazyphil01 said:
Did anyone already find the secret USB menu code to put the device into Modem mode? As the YotaPhone has a Qualcomm processor, this could be used to enable additional LTE bands, which really would help with reception like in [GUIDE] Add all GSM and LTE bands to your phone.
Click to expand...
Click to collapse
Modem mode can setted by change buildprop sys.usb.config=diag.
Next read this.

w()$k said:
Modem mode can setted by change buildprop sys.usb.config=diag.
Next read this.
Click to expand...
Click to collapse
Ah, I haven't noticed that post, so we're making progress but no clear results yet :fingers-crossed:
here on XDA there's also this thread about unlocking frequencies: https://forum.xda-developers.com/yotaphone-one/help/unlocking-additional-radio-basebands-t3523000

TD-WCDMA won't work in spain. TD stands for Time Division and many countries work with FD (Frecuency Division)

Hi,
I am much interested in changing the LTE of YD206, has anyone suceed yet on this phone? A tuto would be really awesome! As I am new to android it would definitly help!
@TheArt. could you eventually translate the post please? My russian is far not good enought and google translated does not make much sens...! Did you succeed modifying the bands?

UNLOCK LTE BAND B20 - 800Mhz and B38
I will translate here the work of three 4pda users who must be thanked a lot for their work! unkernet, ssho and BoyNG. Thank also to mamant1988 who put everything together.
The original 4pda guide can be found here (in russian): http://4pda.ru/forum/index.php?showtopic=797643&view=findpost&p=59716629
UNLOCK B20 LTE BAND ON YD206​
Starting point is a rooted YD206 with latest RU 134 firmware, TWRP and ADB-USB-debug enabled. Do this procedure carefully and write down all the modifications and default values. The changes are performed on NVRAM level, so flashing firmwares will not affect them. Flashing firmwares will, however, affect modified baseband, as any other "radio" part as usual.
Download here the .zip archive which contains what is needed for this guide, including some screenshots of how things should be displayed.
Download the modified baseband RU-CN here and put it into the internal memory of the phone: it will be flashed in the end.
Install QPST and QXDM Qualcomm programs on Windows, they are in the above archive.
Enable the installation of unsigned drivers in Windows (like this). This is needed to install drivers for the diagnostical port later on.
Download Terminal Emulator from Play Store.
In the Terminal, write the following to get root access:
Code:
su
then:
Code:
setprop sys.usb.config diag,adb
Connect the phone via USB to the PC, in the Device Manager it should pop up as "Android Device" or similar, without a specific driver.
Right click on it and perform these actions: update drivers, search on this computer, choose driver from already installed drivers, show all devices, next, install from disk, there point to the .inf file corresponding to your system (32bit -> x86, 64bit -> x64) found in \YotaLTE\Modified HTCDiagDriver\Win x64HtcUsbMdmV64.inf (for 64bit).
After installation, go to properties of this new driver HTC USB Modem and check the number of the port displayed there, COM3 or COM4, for example.
Lower the 38400 value which you find there, click OK.
Execute as an admin C:\Program Files (x86)\Qualcomm\QPST\bin\QPSTConfig.exe.
Choose the second section Ports, then "Add new port".
In the field Port put the one which was displayed in the modem section, COM3 for example.
In Port Label field write "Yota" or whatever, and then OK.
In the first section Active Phones the smartphone should be displayed.
KEEP QPSTConfig.exe PROGRAM OPENED.
Also, start C:\Program Files (x86)\Qualcomm\QXDM\Bin\QXDM.exe using admin privileges
Here, click Option, then Communications.
In the Target Port choose the same port as before, then OK.
Click View, New, Common, NV Browser. In the Category Filter choose LTE.
Choose 06828 LTE BC Config and then press "read".
Correct the number you see, for example 1099511627781 in 1099512152069 for B20 and click Write to save.
Close all the programs, and reboot the phone directly into TWRP (VOL UP + POWER), here find the update_S01_003_4240_RU1_M05_patched.zip baseband and flash it.
At this point it is advised to clean dalvik cache and cache with TWRP.
Done! Reboot.
If it is not working, reset everything by flashing stock baseband, putting back the values changed above and start again. It is not necessary to flash the modified RU-CN baseband, if with the CN one the phone is performing at 100%. I suggest to flash to see the differences. By the way, remember to unlock one band at a time.
To unlock B38 band (there is lack of information about YD206 already having it or not) the number is 1236951105541. For example, if the initial number found in LTE config was: 1236950581253, it means that the bands LTE B1/B3/B38/B41 were active. To verify by yourself download LTE Band Calculator.
Some attempts have been made also to unlock B7 band, but without success for now. It seems that the baseband crashes after a second when triying to connect to that LTE band. Further research needed!

After all the hassle I just went through to obtain a YD201 instead of a YD206 so I could have Band 20
Great news for YD206 owners anyway, thanks for sharing!

hippy dave said:
After all the hassle I just went through to obtain a YD201 instead of a YD206 so I could have Band 20
Great news for YD206 owners anyway, thanks for sharing!
Click to expand...
Click to collapse
Me too.
Tried drivers installation with a yd201 (just for take a look about the wifi issue) and they are not compatible.
I guess modifying the inf files would do the trick.

Hi, I try to unlock LTE band, but su command doesn't work in terminal .... it said su: not found.

velociraptor68 said:
Hi, I try to unlock LTE band, but su command doesn't work in terminal .... it said su: not found.
Click to expand...
Click to collapse
Do you have root? Do you give root permission to Terminal Emulator?

Just did the procedure, can't confirm if it's working on 800MHz B20 yet because I can't find a way to force it or even know if its available in my region from my Network, because I live in the city and they use mostly the 1800MHz, 2G Only works correctly and it seems that somehow it also solves the Proximity Sensor, I will give feedback at how it behaves tomorrow when I will be on the move, but until now everything seems well and smooth, Many Thanks for the persons that worked on the fix, I guess Yota should be hiring! And to @TheArt who translates all the good stuff!

band17
Hello,
Would it work to unlock band 17 At&t? Is that enough modify config 6828 number by calculator?

Hello,
I am from Bosnia and got Yotaphone 2 from China (YD206) and installed latest RU software 1.132, but I noticed that my phone only works in big cities. As soon as I leave for the countryside, there is no signal/service.
Is there another version of software I can try to upgrade to, to get these bands in the countryside as well, or the problem is with the limitation of phone's hardware?
Thanks!

Miroslav1999 said:
Hello,
I am from Bosnia and got Yotaphone 2 from China (YD206) and installed latest RU software 1.132, but I noticed that my phone only works in big cities. As soon as I leave for the countryside, there is no signal/service.
Is there another version of software I can try to upgrade to, to get these bands in the countryside as well, or the problem is with the limitation of phone's hardware?
Thanks!
Click to expand...
Click to collapse
Whats the coverage in your contry?
Maybe outside big cities there are not mobile connection in the frequency that yotaphone can support

borekon said:
Whats the coverage in your contry?
Maybe outside big cities there are not mobile connection in the frequency that yotaphone can support
Click to expand...
Click to collapse
GSM : 900 (E-GSM) 1800 (DCS)
UMTS: B1(2100) UMTS B8 (900 GSM)
That is what I found out from google. I am not sure what is the better way to find out what Yota covers and what is available here.
If someone knows please let me know.
If I perhaps flash the phone with EU software rather than RU which I currently have, would that unlock some bands?

[GUIDE] How to enable VOLTE working in RR without Jio4gvoice app

Here is a guide how to enable VOLTE in RR without Jio4gvoice app.
Supported ROM :
RR 5.7.4
Instructions
1. Open ES File manager and enable hidden folder. Search .Jio4gvoive folder delete it. Then delete jio4g app and voice app.
2. Now again install jio4g voice app and register through it.
3. Now Delete Jio4gvoice app.
4. Open dialer and dial *#*#4636#*#* .
5. Scroll to end and open OEM specific settings.
6. And turn on MBN AUTO LOAD, volte debug, VT DEBUG, WFC DEBUG. ( After clicking on it will show turn off so don't get confused with it. )
7. In SIM Settings Disable Connected line indetification & open APN settings.
8. And If you have loop APN just edit APN "www" to "jionet" and save it. Keep APN PROTOCOL AND ROAMING PROTOCOL TO "IPv4" otherwise internet will not work.
9. Now reboot to recovery and wipe dalvik cache and cache only.
10. Restart your device and open dialer.
Workaround :
If you are not getting network in jio then open system ui tuner by pressing on settings icon in Qs panel or search it in setting.
Then add tiles "LTE" . Now enable LTE from QS Panel(check screenshot) You will get network.
If you are getting volte icon like volte1 and volte2 then volte is enable. Just try to call and enjoy. If it's help just click thanks.
If anyone is on lineage os try this and report me back if it's working on it too then I will edit it to lineage os too.
Those who will publish this guide in their site please give proper credits.

screenshot.

Thnx.. alot.. worked for me..in one go...:good:

Not this one but simple trick worked for me given by @TechGeekD without first step
no need to download any application to fix VoLTE
1). clean install latest build
2). goto settings -> SIM cards
3). set cellular data to Jio 4g & Calls to Jio
4). goto SIM 1 settings (or SIM 2 settings if Jio is in sim slot 2 )
5). see if Enhanced 4G LTE Mode is enabled or not !! enable it if not
6). goto Access Point Names (aka APN)
7). select 3 dot menu press Reset to default
8). add new APN with settings given below
APN SETTINGS
Name: ims
APN: IMS
APN Type : IMS
(notice one thing APN Type & APN is written in Capital !!!)
do not restart thats the bug ims setting stays there but not visible in settings cause after restarting we can not add new ims setting with same APN and APN Type but simple tweaking with APN & APN Type will fix it (but still don't restart after VoLTE gets working it will be gone again and you can't tweak it now)
Edit :- Selinux needs tobe on permissive mode

rohansalunkhe71 said:
Not this one but simple trick worked for me given by @TechGeekD without first step
no need to download any application to fix VoLTE
1). clean install latest build
2). goto settings -> SIM cards
3). set cellular data to Jio 4g & Calls to Jio
4). goto SIM 1 settings (or SIM 2 settings if Jio is in sim slot 2 )
5). see if Enhanced 4G LTE Mode is enabled or not !! enable it if not
6). goto Access Point Names (aka APN)
7). select 3 dot menu press Reset to default
8). add new APN with settings given below
APN SETTINGS
Name: ims
APN: IMS
APN Type : IMS
(notice one thing APN Type & APN is written in Capital !!!)
do not restart thats the bug ims setting stays there but not visible in settings cause after restarting we can not add new ims setting with same APN and APN Type but simple tweaking with APN & APN Type will fix it (but still don't restart after VoLTE gets working it will be gone again and you can't tweak it now)
Edit :- Selinux needs tobe on permissive mode
Click to expand...
Click to collapse
This is a permanent fix. His method is temporary due to restart won't allow volte. But this method works charming after restart also. Your choice, I am not forcing...

Not working here. I am on R 5.7.4. Had done a clean flash.
Tried every method. And even if VoLTE works, neither you can send sms nor receive.

Njishi said:
Not working here. I am on R 5.7.4. Had done a clean flash.
Tried every method. And even if VoLTE works, neither you can send sms nor receive.
Click to expand...
Click to collapse
Same here not working.. we have to wait for proper fixes by the devs
Sent from my LeEco Le 2 using XDA Labs

mdfarazb2 said:
Same here not working.. we have to wait for proper fixes by the devs
Sent from my LeEco Le 2 using XDA Labs
Click to expand...
Click to collapse
That's why moved on to stock until codeworkx will remove VoLTE fix from the to do list. And i yes i have a lot a patience. So i can wait. As developers has their personal life. And they have to manage it.

Njishi said:
That's why moved on to stock until codeworkx will remove VoLTE fix from the to do list. And i yes i have a lot a patience. So i can wait. As developers has their personal life. And they have to manage it.
Click to expand...
Click to collapse
yup.. I'm too waiting no hurry... Not a Hardcore VoLTE user
Sent from my LeEco Le 2 using XDA Labs

mdfarazb2 said:
yup.. I'm too waiting no hurry... Not a Hardcore VoLTE user
Sent from my LeEco Le 2 using XDA Labs
Click to expand...
Click to collapse
Yea !!! Problem is with SMS too... Until Dev fix those things we can have call... Hope so it will be fixed soon. I think there would be frimware patch.

not working on lineage os 14.1 december 22, 2017 build
veer.killerboy said:
Here is a guide how to enable VOLTE in RR without Jio4gvoice app.
Supported ROM :
RR 5.7.4
Instructions
1. Open ES File manager and enable hidden folder. Search .Jio4gvoive folder delete it. Then delete jio4g app and voice app.
2. Now again install jio4g voice app and register through it.
3. Now Delete Jio4gvoice app.
4. Open dialer and dial *#*#4636#*#* .
5. Scroll to end and open OEM specific settings.
6. And turn on MBN AUTO LOAD, volte debug, VT DEBUG, WFC DEBUG. ( After clicking on it will show turn off so don't get confused with it. )
7. In SIM Settings Disable Connected line indetification & open APN settings.
8. And If you have loop APN just edit APN "www" to "jionet" and save it. Keep APN PROTOCOL AND ROAMING PROTOCOL TO "IPv4" otherwise internet will not work.
9. Now reboot to recovery and wipe dalvik cache and cache only.
10. Restart your device and open dialer.
Workaround :
If you are not getting network in jio then open system ui tuner by pressing on settings icon in Qs panel or search it in setting.
Then add tiles "LTE" . Now enable LTE from QS Panel(check screenshot) You will get network.
If you are getting volte icon like volte1 and volte2 then volte is enable. Just try to call and enjoy. If it's help just click thanks.
If anyone is on lineage os try this and report me back if it's working on it too then I will edit it to lineage os too.
Those who will publish this guide in their site please give proper credits.
Click to expand...
Click to collapse
Please help me out bro
im using le 2 x 526 and recently changed rom to lineage os from stock rom.
i couldnot use volte to make calls without jio4g voice app.
please help me to fix this

Nykenztron said:
Please help me out bro
im using le 2 x 526 and recently changed rom to lineage os from stock rom.
i couldnot use volte to make calls without jio4g voice app.
please help me to fix this
Click to expand...
Click to collapse
Did you tried these workaround? Can you get volte icon in dialer in front of sim1 and sim2? If you are able to call through jio4g voice app. Follow steps from starting like deleting .jio4g voice folder and all that. These were tested personally by me in RR . If nothing works I better recommend you to flash 19s eui then clean flash lineage latest rom ( for bugs report to rom's threads) don't try to flash any other bootloader or modem files. As @codeworkx also mentioned that lineage is nothing to do with bootloader or modem. Note - MM have issues but nougat don't.

veer.killerboy said:
Did you tried these workaround? Can you get volte icon in dialer in front of sim1 and sim2? If you are able to call through jio4g voice app. Follow steps from starting like deleting .jio4g voice folder and all that. These were tested personally by me in RR . If nothing works I better recommend you to flash 19s eui then clean flash lineage latest rom ( for bugs report to rom's threads) don't try to flash any other bootloader or modem files. As @codeworkx also mentioned that lineage is nothing to do with bootloader or modem. Note - MM have issues but nougat don't.
Click to expand...
Click to collapse
it didnt work.
thereis no .jio4gvoice folder i checked even in hidden files and root explorer.
can you direct me to any tutorial video?

Nykenztron said:
it didnt work.
thereis no .jio4gvoice folder i checked even in hidden files and root explorer.
can you direct me to any tutorial video?
Click to expand...
Click to collapse
What is your apn?

Nykenztron said:
it didnt work.
thereis no .jio4gvoice folder i checked even in hidden files and root explorer.
can you direct me to any tutorial video?
Click to expand...
Click to collapse
Try other JIO sim from a VoLTE supported phone.
OR
Put your JIO sim in other phone which have VoLTE working then put it back to your phone, try both method because this helped me sometimes.

A510F. Emergency calls only

So my A510F out of nowhere starting doing some weird stuff. When someone tries to call me, the phone instantly goes into emergency calls only mode. Same happens when i try to call someone. I can send text messages, the internet works fine. I tried doing system restore, it didn't help. Also tried flashing a custom rom. I'm still having the same issue. I tested the SIM card in another phone, and the calls go through with no problem. Any help?

Ok... let's start.
RAT Lock to 3G only. The issue persists?
RAT Lock to 2G only. The issue persists?

Bryan48765 said:
Ok... let's start.
RAT Lock to 3G only. The issue persists?
RAT Lock to 2G only. The issue persists?
Click to expand...
Click to collapse
Yes, still the same issue

nexasLT said:
Yes, still the same issue
Click to expand...
Click to collapse
this is after locking or making a call?
wait 3 mins after locking

Bryan48765 said:
this is after locking or making a call?
Click to expand...
Click to collapse
After trying to make a call

nexasLT said:
After trying to make a call
Click to expand...
Click to collapse
Use the USSD *#0011# & select sim. The registered PLMN / MCC MNC is the same in the normal state and emergency calls only? Signal strength and quality is OK (includes ec/io?) TCH rx lvl no longer -- with call / any MNO's USSD code on 2G? Any change if the operator is manually searched and selected?
Edit: I'm suggesting 2G/3G because maybe at some time, the CSC was not applied correctly, disabling volte and leaving CSFB. If *#0011# doesn't work the CSC wasn't applied correctly. Was that other phone connected to another cell (different band preference), or did it have volte enabled?

Bryan48765 said:
Use the USSD *#0011# & select sim. The registered PLMN / MCC MNC is the same in the normal state and emergency calls only? Signal strength and quality is OK (includes ec/io?) TCH rx lvl no longer -- with call / any MNO's USSD code on 2G? Any change if the operator is manually searched and selected?
Edit: I'm suggesting 2G/3G because maybe at some time, the CSC was not applied correctly, disabling volte and leaving CSFB. If *#0011# doesn't work the CSC wasn't applied correctly. Was that other phone connected to another cell (different band preference), or did it have volte enabled?
Click to expand...
Click to collapse
The *#0011# sin't working. The other phone was LG P500, it only has 3G. I'm running Arrived Crystal ROM on the samsung if that helps

nexasLT said:
The *#0011# sin't working. The other phone was LG P500, it only has 3G. I'm running Arrived Crystal ROM on the samsung if that helps
Click to expand...
Click to collapse
If the 0011 disappears with no response, the ril service mode has been debloated. If the 0011 stays with no response, the CSC was not applied correctly. You could alternatively try to open it with root (am broadcast...) Check logcat -s XMLParser:V, there should normally be at least one that doesn't say file not found.
With that rom you likely have root, to apply CSC copy the content of /system/csc/yourcsc/system/ into /system/.
/system/csc/yourcsc/system/etc merges into /system/etc & /system/csc/yourcsc/system/csc merges into /system/csc
Set the permissions of those files (not folders) to 644(owner read write, group read, other read). After this try volte(4G LTE) if available.
Specifically, it's "yourcsc_keystrings.dat" for 0011. Rename it to sm-a510f_keystrings.dat if it doesn't work. This file from any device or CSC could work.
The 0011 isn't the solution to the problem, unfortunately. But it could help us know what's the cause of it.
Something else: (backup the efs in case you accidentally select something unintended, or because maybe it's broken on nougat, 9090 is something different and could cause modem bricks, I've used 9900 on a510fd marshmallow) Enable mobile data while the network becomes unavailable, *#9900#, select run cp based log. In /data/log/err, open litmuslog...txt and scroll down. Google those reject cause codes if there are any.
Showing errors specific to calls is at+ceer(create a backup), an at command that could be run with the 'modem serial port' on a PC or on the Exynos device itself with root and with minicom -D /dev/umts_router.
Also, you could try contacting your MNO. It's likely that they will tell you to restart your device but it's worth a try.
You could try a SIM from another MNO.
I've got nothing else.

Emergency call solved in a510fd
Is the 4-file maintenance ROM capable of repairing the network in a model A510FD and can it solve the problem of emergency calls only?

[GUIDE] Enable VoLTE & VoWiFi on all devices NO ROOT.

This is a quick guide on how to enable VoLTE and VoWIFI on every OnePlus 8 or 8 Pro device.
This method involves downgrading the OnePlus LogKit APK to the OnePlus 7 version.
I recommend you to backup the existing LogKit APK using ADB on a
Or download an APK extractor from the Play Store, i personally recommend: https://play.google.com/store/apps/d...m.ext.ui&hl=nl
After you extracted the original LogKit you need to download the old LogKit which you can find as an attachment in the thread.
Install the downloaded LogKit APK and follow the steps:
1. Open the Dialer app on the device.
2. dial *#800# and LogKit will open up.
3. Scroll all the way down and click on Function Switch (this is missing from the stock OnePlus 8 LogKit APK).
4. Select VoLTE and when prompted to reboot, press cancel.
5. Select VoWifi and when prompted to reboot press OK.
6. Your device will now reboot and you should have VoLTE & VoWifi enabled.
7. Reinstall the backup from the LogKit apk (VoLTE & VoWifi should still be enabled when you reinstall the backed up LogKit apk).
The above has been tested to work in The Netherlands.
If you have followed the steps, please let me know what your results are!
WiFi Calling Screenshot:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}

Good work:good:
Thanks...
My device OnePlus 8 / IN2010

Works but..
Tested on oneplus 8, in Europe. VoLTE works without any problems, but VoWifi has issues, meaning I see the VoWifi symbol constantly disappear and the phone goes to cellular calling mode, then it appears again and so on, despite having the Call on Wifi set as priority in settings. I have no idea why it does this, it's like it is losing the handshake between itself and the mobile operator's network for Wifi Calling.
Very often I see VoLTE symbol instead of the VoWifi despite the fact that my wifi network is fine.
When it loses the Wifi Calling, it happens randomly, for 5 minutes or for more. I have to either switch to airplane mode or restart the phone sometimes to get VoWifi working again.
Any idea what else could be done? I have even done the QPST changes, activating the India vodafone VoLTE for Sub0 and Sub1 and still, same issue.
I have the International/Global firmware on it, not the European one.
Network: Orange Romania

I have same issues with me my one plus 8 (N2013 model)
I haven't tried QPST changes
Volte button and force vowifi button have disapear since change carrier from one who doesn't support Volte/vowifi (Orange Fr) to Bouygues Telecom (France)
Volte working fine, vowifi just time to time like you have explain very randomly
Tom
mmuntean2 said:
Tested on oneplus 8, in Europe. VoLTE works without any problems, but VoWifi has issues, meaning I see the VoWifi symbol constantly disappear and the phone goes to cellular calling mode, then it appears again and so on, despite having the Call on Wifi set as priority in settings. I have no idea why it does this, it's like it is losing the handshake between itself and the mobile operator's network for Wifi Calling.
Very often I see VoLTE symbol instead of the VoWifi despite the fact that my wifi network is fine.
When it loses the Wifi Calling, it happens randomly, for 5 minutes or for more. I have to either switch to airplane mode or restart the phone sometimes to get VoWifi working again.
Any idea what else could be done? I have even done the QPST changes, activating the India vodafone VoLTE for Sub0 and Sub1 and still, same issue.
I have the International/Global firmware on it, not the European one.
Network: Orange Romania
Click to expand...
Click to collapse

It would be really nice if OnePlus would give us an update to the Log Kit so we didn't need to do this.
Alan

Whats name is this app bro ?
IN2010 cihazımdan Tapatalk kullanılarak gönderildi

Do you have the original logkit? I miss make backup

Using t-mobile branded OP was able to enable, but the icon is not there.

Just an FYI to anyone wondering: I bought the IN2015 model directly from OnePlus. VoLTE and VoWiFi both work right out of the box with T-Mobile (I'm in the Philadelphia area). I didn't even have to turn them on, they were already enabled.

tomj44 said:
I have same issues with me my one plus 8 (N2013 model)
I haven't tried QPST changes
Volte button and force vowifi button have disapear since change carrier from one who doesn't support Volte/vowifi (Orange Fr) to Bouygues Telecom (France)
Volte working fine, vowifi just time to time like you have explain very randomly
Tom
Click to expand...
Click to collapse
It seems that after I switched back to EU firmware, from Global, I no longer have problems with VoWifi. I also switched in QPST from India Vodafone to Telia Finland, but even with Telia, when I was using the global firmware, I would still have issues with VoWifi constantly disconnecting. Now, with the EU firmware, seems to work with 0 problems. I have it like this for 3 days now, and VoWifi stays on all the time when I am conencted to a wifi network.
You may want try to switch to Telia Finland in qpst PDC app and check afterwards. Also install the older logkit apk to be able to enable the volte and vowifi buttons.

original logkit
Do you have a backup of the original logkit i saved it badly?
Thank you in advance for your help.

original logkit of the OnePlus 8
davids_yo said:
Do you have the original logkit? I miss make backup
Click to expand...
Click to collapse
here the original logkit of the OnePlus 8

Volte for additional carriers
Thanks for the guide. @LennARTpas
Maybe you can add this to first post:
If volte is enabled but not active follow the following additional steps:
1. Perform all steps of the first post
2. Enable Volte in Settings > SIM & Network > SIM 1/2 > Volte/Vowifi
2. Download the following files:
QPST (Install on PC / preferable inside Virtual Machine) - https://androidfilehost.com/?fid=11410963190603912872
Qualcomm Driver (Install on PC / preferable inside Virtual Machine, select WWAN option) - https://androidfilehost.com/?fid=11410963190603864074
Oneplus Engineering Mode (Install on phone) - https://www.apkmirror.com/apk/oneplu...-apk-download/​3. Install Oneplus Engineering Mode
4. Phone Dialer > Enter *#801# > Open with Engineering Mode > enable "Full-port Switch"
5. Connect phone to PC
6. Run PDC Program
7. Select Qualcomm device
8. Note down the current configuration (where "Active" is shown)
9. Activate India-VoLTE Vodafone (Right Click > Set SelectedConfig > Sub0 and Sub1)
10. Press Activate
11. Volte should now work. If not change back the configuration to the original state

7ORO said:
Thanks for the guide. @LennARTpas
Maybe you can add this to first post:
If volte is enabled but not active follow the following additional steps:
1. Perform all steps of the first post
2. Enable Volte in Settings > SIM & Network > SIM 1/2 > Volte/Vowifi
2. Download the following files:
QPST (Install on PC / preferable inside Virtual Machine) - https://androidfilehost.com/?fid=11410963190603912872
Qualcomm Driver (Install on PC / preferable inside Virtual Machine, select WWAN option) - https://androidfilehost.com/?fid=11410963190603864074
Oneplus Engineering Mode (Install on phone) - https://www.apkmirror.com/apk/oneplu...-apk-download/​3. Install Oneplus Engineering Mode
4. Phone Dialer > Enter *#801# > Open with Engineering Mode > enable "Full-port Switch"
5. Connect phone to PC
6. Run PDC Program
7. Select Qualcomm device
8. Note down the current configuration (where "Active" is shown)
9. Activate India-VoLTE Vodafone (Right Click > Set SelectedConfig > Sub0 and Sub1)
10. Press Activate
11. Volte should now work. If not change back the configuration to the original state
Click to expand...
Click to collapse
It's funny , just switched to OP8 and it doesn't work...
I did that always on my OP6T and worked perfectly.
Edit : VoLTE works , VoWIFI doesn't work :\

yot2703 said:
It's funny , just switched to OP8 and it doesn't work...
I did that always on my OP6T and worked perfectly.
Edit : VoLTE works , VoWIFI doesn't work :\
Click to expand...
Click to collapse
Hi Guys, i tried on my OP8 in Czech Republic a working perfectly!!
Thanks

I have an op8 IN2010 with oos 10.5.7 eu (BA) .
I use SIM Vodafone Italy but the VoLTE icon does not appear in the status bar
I changed from Italy VoLTE Vodafone to India VoLTE Vodafone
Is VoLTE active? Why doesn't the icon appear in the status bar? Thx

I get volte and vowifi on, but nothings seems to work to get KPN netherlands vowifi active. But lost the smart 5g button
After i install the old logkit, i still lost the smart 5g button.
How to get the button back.
Verstuurd vanaf mijn IN2013 met Tapatalk

7ORO said:
Thanks for the guide. @LennARTpas
...
Oneplus Engineering Mode (Install on phone) - https://www.apkmirror.com/apk/oneplu...-apk-download/
...
Click to expand...
Click to collapse
link not working

sirioo said:
I have an op8 IN2010 with oos 10.5.7 eu (BA) .
I use SIM Vodafone Italy but the VoLTE icon does not appear in the status bar
I changed from Italy VoLTE Vodafone to India VoLTE Vodafone
Is VoLTE active? Why doesn't the icon appear in the status bar? Thx
Click to expand...
Click to collapse
any ideas to solve?

Does not work when using an AT&T mvno. They're notorious for preventing users from using VoLTE and VoWIFI if its not a carrier branded device so this doesn't surprise me.

How to turn on Wifi-Calling and VoLTE on 8T after update

Hello everyone!
Finally I've find way to turn on Volte and Wifi calling back on 11.3.4 and 11.4.5!
When i bought the phone on the stock version i had aviability to turn on VoLte and WifiCalling, but after 2 updates - 11.3.4 and 11.4.5, dont why this options gone.
Little guide how to bring back this option on your phone:
1. Use this app "Apk Extractor" to backup your currently Logkit
(https://play.google.com/store/apps/details?id=com.ext.ui&hl=pl&gl=US)
2. Download this version of Logkit: https://drive.google.com/file/d/1bQYKY6tI5O37yXVyXpFYdOHIvMB9iuMt/view
3. Now, open the dialer app and dial *#800# to access the menu.
4. Scroll down and tap the Function switch option and turn on VoLte and WiFi calling.
5. Reboot phone
6. Check Sim & Network option
7. After that reinstal your backup Logkit!
https://imgur.com/a/Yqtn2tt

I do now have the option to turn on wifi calling! However when I toggle it on, it does not stay on. KB05AA on Verizon wireless.

Thanks now I can see mine and it's already on?

Can someone upload the backup of the original apk. I kinda didn't do that. Lol thanks I'm advance. Also mine doesn't stick either. I am on verizon as well.

cameljockey1 said:
Can someone upload the backup of the original apk. I kinda didn't do that. Lol thanks I'm advance. Also mine doesn't stick either. I am on verizon as well.
Click to expand...
Click to collapse
-Michael_ said:
I do now have the option to turn on wifi calling! However when I toggle it on, it does not stay on. KB05AA on Verizon wireless.
Click to expand...
Click to collapse
Sorry guys, but I don't know your operator.
On the stock have you vo and wifi?

Do you have the backed up log kit apk? Can you send it to me please.

Anyone get this working with Verizon?

cameljockey1 said:
Do you have the backed up log kit apk? Can you send it to me please.
Click to expand...
Click to collapse
Here's mine.

cameljockey1 said:
Can someone upload the backup of the original apk. I kinda didn't do that. Lol thanks I'm advance. Also mine doesn't stick either. I am on verizon as well.
Click to expand...
Click to collapse
You can just look for it in the apps, make sure you press "show system app" and after you found the logkit, press "Uninstall updates"
Sent from my unknown using Tapatalk

i already have this option in my mobile v2001, i activated but its not working for some reason, i guess it needs Qualcomm driver update just like op 7..

meshal300 said:
i already have this option in my mobile v2001, i activated but its not working for some reason, i guess it needs Qualcomm driver update just like op 7..
Click to expand...
Click to collapse
You can also activate VoLTE by changing MBN with Qualcomm PDC like OP5/6/7 but you must be rooted now
Follow the guide here
Download archive, read the pdf, it's in french but you have screenshots for explaination, if you have some questions, quote me
It can be usefull just for using software with your parameters / Carrier

hi, i don't find logkit apk in apk extractor. however I displayed the system applications
have an idea why?

i tired to enable volte and vowifi and both are enabled but still no volte or vowifi on my old phone it worked fine same sim in th e8t and its not working any ideas?

Thanks for this. Just tried and I now have the WiFi calling option and it works fine (for Vodafone UK).
Funny thing is even when I reinstall the extracted (backed up) logkit it still doesn't revert to the original one. Uninstalling updates also does revert back but it fine. I can't imagine there's any harm in using the downloaded one.

After upgrading to OOS12 this method is not working any more.. Does anybody have a new solution to get volte vowifi back?

tiuro said:
After upgrading to OOS12 this method is not working any more.. Does anybody have a new solution to get volte vowifi back?
Click to expand...
Click to collapse
In OOS12 and ColorOS12 access to logkit and engineering mode were somewhat hidden by developers.
The easiest way to access toggles is obtained with root access and Magisk.
Just install attached module. Enable VoLTE and VoWiFi toggles.

Thank you! Works flawlessly!

Any help activating VOLTE for un-rooted 8T KB2003 running KB2003_11_c.36 please?

eslonim said:
Any help activating VOLTE for un-rooted 8T KB2003 running KB2003_11_c.36 please?
Click to expand...
Click to collapse
Without root it's quite complicated because on OOS12&13 access to engineering mode via dialer code is disabled.
[GUIDE] Fix/Enable 5G and DSS
Enable 5G and DSS on OnePlus 8T As you may or may not know OnePlus didn't add proper changes into EFS configs to allow us use 5G on every network in the world. This guide will help you unlock 5G access and DSS (Dynamic Spectrum Sharing) and...
forum.xda-developers.com
Secrecy unlock
WARNING - THIS (ORIGINAL) METHOD IS NOT WORKING WARNING - BE CAREFULL REGARDING (your) IMEI SHARING ! You need to enable Developer Options and USB Debugging in the Phone Download the Oppo_Free_Unlock_v1.0.zip Secrecy Auto Unlocker : Open the...
forum.xda-developers.com

Rootk1t said:
Without root it's quite complicated because on OOS12&13 access to engineering mode via dialer code is disabled.
[GUIDE] Fix/Enable 5G and DSS
Enable 5G and DSS on OnePlus 8T As you may or may not know OnePlus didn't add proper changes into EFS configs to allow us use 5G on every network in the world. This guide will help you unlock 5G access and DSS (Dynamic Spectrum Sharing) and...
forum.xda-developers.com
Secrecy unlock
WARNING - THIS (ORIGINAL) METHOD IS NOT WORKING WARNING - BE CAREFULL REGARDING (your) IMEI SHARING ! You need to enable Developer Options and USB Debugging in the Phone Download the Oppo_Free_Unlock_v1.0.zip Secrecy Auto Unlocker : Open the...
forum.xda-developers.com
Click to expand...
Click to collapse
Thanks - I will try that. Also I read elsewhere to check with carrier that VOLTE turned on for my account