Get VOLTE working on OP7T

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@EugenStanis, thanks for your help.

I connected device, ADB on, Rooted and typed the commands.
A window opened in PC (Win 7) which says:
Qualcom USB Composite Device9091 .... Ready for use
Qualcom HS-USB Diagnostics 9091 .... Ready for use
Qualcom HS-USB Modem 9091 .... Ready for use
Qualcom HS-USB WWAN Adapter 9091.... Failed
ADB Interface .... No drivers found


Any ideas??

Thanks again...

Install both apk's on your mobile (com.oem.oemlogkit_1.0-1.apk and com_android_engineeringmode_V1_01.apk)
Disable driver signature enforcement: https://windowsreport.com/driver-signature-enforcement-windows-10/
Reboot PC. Install driver: QUD-setup_op7ready.7z and QPST_2.7.474
install this: https://forum.xda-developers.com/showthread.php?t=2317790
open dialer app and enter *#801#
Set Serial and Full-port switch to ON
Reboot and look if Serial and Full-port switch is ON. If not, check it again, launch Minimal ADB and fastboot then
type:
Adb devices
adb shell
su
setprop sys.usb.config diag,serial_cdev,rmnet,adb
 
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KostisTTT

Senior Member
Aug 22, 2015
75
2
ATH
Install both apk's on your mobile (com.oem.oemlogkit_1.0-1.apk and com_android_engineeringmode_V1_01.apk)
Disable driver signature enforcement: https://windowsreport.com/driver-signature-enforcement-windows-10/
Reboot PC. Install driver: QUD-setup_op7ready.7z and QPST_2.7.474
install this: https://forum.xda-developers.com/showthread.php?t=2317790
open dialer app and enter *#801#
Set Serial and Full-port switch to ON
Reboot and look if Serial and Full-port switch is ON. If not, check it again, launch Minimal ADB and fastboot then
type:
Adb devices
adb shell
su
setprop sys.usb.config diag,serial_cdev,rmnet,adb

@EugenStanis
Thank you very much... (It was the signature enforcement)
It works...

You rock...
 

KostisTTT

Senior Member
Aug 22, 2015
75
2
ATH
No prob bruh :eek:

One last question...

After setting the phone to airplane mode, I had no VoWiFi anymore. I have also read that the settings are lost after reboot.

Is there any way to make the settings permanent??

Thanks again...

Edit: Tomorrow morning VoWiFi start working again, without any action from me (!?)
 
Last edited:
One last question...

After setting the phone to airplane mode, I had no VoWiFi anymore. I have also read that the settings are lost after reboot.

Is there any way to make the settings permanent??

Thanks again...

Edit: Tomorrow morning VoWiFi start working again, without any action from me (!?)

Settings are sometimes lost, and sometimes not. It's carrier dependent from what I found.
For me everything works perfectly, but sometimes I lost this function for small amount of time.
What I did is, activate germany vodafone or uk telefonica on both sub0 and sub1, reboot and check again in pdc if settings stick to what you want. If not, activate it again on both sub's and reboot, it should stay like that for longer time.
 
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avivasaf

Senior Member
Apr 24, 2011
205
16
I installed oneplus kit and choose volte+wifi on *#800# than choose on my network sim the volte+wifi buttons, but still after reboot no volte sign on status bar, what is the problem?
 

crazyut

Senior Member
Hello all together,

I wondered why VOLTE was not working here in Germany with Vodafone carrier. So I tried older solutions.

Here is what worked for me:

Install new Oneplus Logkit:
https://www.apkmirror.com/apk/oneplus-ltd/onepluslogkit/onepluslogkit-1-0-release/
Android 9 version also works on Android 10.
Found the helping post at https://forum.xda-developers.com/showpost.php?p=79577939&postcount=23

Then do the following
Open the dialer: *#800# --> oneplus Logkit --> Function Switch --> enable VoLTE + VoWifi switch
found at https://forum.xda-developers.com/oneplus-5t/how-to/guide-volte-vowifi-german-carriers-t3817542

After reboot VOLTE was instantly on and working.

Aa always: Do at your own risk. I am not repsonsible for bricked HW, nuclear war and alien invasions :cyclops:

Thank you for this. I enabled this on the 7T Pro McLaren 5G model and it works with my Freedom Mobile SIM. 30 minutes before I found this post, I finally got the Bootloader Unlock site to accept my phone. BEST HOUR EVER.
 

johannesdr

New member
Nov 23, 2012
2
0
In order to get VoLTE and VoWiFi working with Orange in Belgium, I followed this guide :
https://forum.xda-developers.com/oneplus-5t/how-to/guide-volte-vowifi-german-carriers-t3817542
To access Engineering Mode I had to install it from apkmirror, then it's accessible by dialing *#801#.
https://www.apkmirror.com/apk/onepl...-0-171117173719-25c8842-android-apk-download/
Serial causes fc, but full-port switch works and it's enough.

@sasho36 I'm also trying to activate it on my OnePlus 7T for Orange Belgium.

Was it enough to enable the volte and vowifi function switches with oneplus Logkit and then enable Full port switch with engineering mode?
Or did you also go trough the other steps (5 - 8) of installing the QPST tool to install the India-VoLTE-Vodafone or Telefonica_UK_Commercial profile?

I don't have a Windows pc so not sure how to run those.
 

ecompton59

Senior Member
Jan 9, 2015
733
129
38
Lexington,sc
OnePlus 8T
to get volte you need to modify framework g-box does with root i posted pic and 2nd is tether fix works still
 

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