How To Guide How to enable VOLTE and VoWifi on Realme GT Neo 2 (and probably other Realme devices) when the toggles are not available in SIM info & settings

[siulmagic]

This worked like a charm, got volte and vowifi working on my realme 9 pro on Tmobile.

 

[doongoo]

Hey XDA,

I felt obliged to contribute since the following steps worked for me and I got VoLTE and WiFi Calling switches in settings in my Realme GT Neo 2 global version RMX3370 that is on Freedom Mobile in Canada.

All factory, no root required, no bootloader unlock required.
May work on other Realme models.

Source: https://realme-gadgetlife.net/how-to-enable-volte/ (in Japanese, I used Google Translate). I can't remember where I found this link, all credits go to where they are due.

Steps, check pictures in the above link:

1. Enable Developers Options and USB Debugging (search online if needed)
2. Connect your phone to a Windows laptop
3. On the phone choose connection type Transfer files / Android Auto
(first time you will be prompted on your phone if you want to allow USB connection from this PC, choose Yes)
4. On the laptop install platform tools, open a command prompt and change directory to where they are installed
5. Enter command "adb devices"
6. The output should say:
List of devices attached
<your realme serial number> device
7. Enter command: "adb reboot fastboot"
8. The phone will enter the fastboot mode and display language selector. No need to do anything on the phone.
9. Enter command: "fastboot reboot recovery"
10. Nothing changes on the phone, no need to touch it this time either
11. Enter command: "adb devices"
12. The output will be:
List of devices attached
<your realme serial number> recovery
Here I installed realme Software&Driver Update tool from

Software Update - realme (India)

Update the latest software version on your realme phone.

www.realme.com

This may help if you're having issues at this step.
13. Enter the commands listed below ONE BY ONE. For some reason they didn't work when I entered them all together.

adb shell setprop persist.data.iwlan.enable true
adb shell setprop persist.dbg.ims_volte_enable 1
adb shell setprop persist.dbg.volte_avail_ovr 1
adb shell setprop persist.dbg.vt_avail_ovr 1
adb shell setprop persist.dbg.wfc_avail_ovr 1
adb shell setprop persist.radio.rat_on combine
adb shell setprop persist.radio.data_ltd_sys_ind 1
adb shell setprop persist.radio.data_con_rprt 1
adb shell setprop persist.radio.calls.on.ims 1
adb shell setprop persist.data.iwlan 1
adb shell setprop persist.data.iwlan.ipsec.ap 1
adb shell setprop persist.radio.volte.dan_support true
adb shell setprop persist.radio.VT_ENABLE 1
adb shell setprop persist.sys.cust.lte_config true
adb shell setprop persist.rcs.supported 1

adb reboot

14. The phone reboots and the VoLTE and WiFi Calling switches are there in Settings - Mobile Networks - <SIM> !

Note that I am not saying that your phone will display VoLTE or VoWiFi in the notification area but at least the switches (options) become available in settings

Thanks to the authors of the page above!

does this method delete anything from phone? How will I know, if the command is carried out succesfully? Will I receive a confirmation after each command? Sorry for the noob questions, but I am not familiar with ADB (but in need of VoLTE Will that remain after the RUI 4.0 update too?

 

[ChatlaninWef]

please delete

 

[ChatlaninWef]

does this method delete anything from phone? How will I know, if the command is carried out succesfully? Will I receive a confirmation after each command? Sorry for the noob questions, but I am not familiar with ADB (but in need of VoLTE Will that remain after the RUI 4.0 update too?

I am not a guru in Android either but I think setprop commands just change settings of the Android OS, I don't think they delete anything.
No confirmation after each command but if you see an error message it means something went wrong.
Once everything is done and the phone has restarted - you'll see VoLTE and WiFi Calling options in the settings - that is the confirmation that it worked.
If you think this is complex - check the original post of this thread If you aren't comfortable - don't do it. Ask someone more familiar with this type of things to do it for you or clarify it for you.
Usual disclaimer: do it at your own risk!
My guess is that after each RUI update you'll have to re-run these commands in order to keep VoLTE.
This is what the manufacturer does to us, they want us to buy a more expensive and single-SIM OnePlus

 

[doongoo]

I am not a guru in Android either but I think setprop commands just change settings of the Android OS, I don't think they delete anything.
No confirmation after each command but if you see an error message it means something went wrong.
Once everything is done and the phone has restarted - you'll see VoLTE and WiFi Calling options in the settings - that is the confirmation that it worked.
If you think this is complex - check the original post of this thread If you aren't comfortable - don't do it. Ask someone more familiar with this type of things to do it for you or clarify it for you.
Usual disclaimer: do it at your own risk!
My guess is that after each RUI update you'll have to re-run these commands in order to keep VoLTE.
This is what the manufacturer does to us, they want us to buy a more expensive and single-SIM OnePlus

View attachment 5809469

Your feedback encouraged me to try my luck Thy for that! For the first time I used minimal adb and I was not successful. after "fastboot reboot recovery" it stopped with "waiting for any device". I switched than to the source site and found there , that they recommend to update drivers in such case. I did it (installed qualcomm latest drivers at first and than generic windows adb drivers). Also downloaded the platform tools which was recommended as well on the source site. For the second try using platform tools for the adb commands and with the generic windows adb usb-driver I was successful. The switches appeared in the setting for my carrier (Telekom), where they were not available before. Now, everything is working like it should from the beginning on. Thx again!

 

[ChatlaninWef]

Your feedback encouraged me to try my luck Thy for that! For the first time I used minimal adb and I was not successful. after "fastboot reboot recovery" it stopped with "waiting for any device". I switched than to the source site and found there , that they recommend to update drivers in such case. I did it (installed qualcomm latest drivers at first and than generic windows adb drivers). Also downloaded the platform tools which was recommended as well on the source site. For the second try using platform tools for the adb commands and with the generic windows adb usb-driver I was successful. The switches appeared in the setting for my carrier (Telekom), where they were not available before. Now, everything is working like it should from the beginning on. Thx again!

Great! I'm glad it worked for you

 

[Ping Guerrero]

Hey XDA,

I felt obliged to contribute since the following steps worked for me and I got VoLTE and WiFi Calling switches in settings in my Realme GT Neo 2 global version RMX3370 that is on Freedom Mobile in Canada.

All factory, no root required, no bootloader unlock required.
May work on other Realme models.

Source: https://realme-gadgetlife.net/how-to-enable-volte/ (in Japanese, I used Google Translate). I can't remember where I found this link, all credits go to where they are due.

Steps, check pictures in the above link:

1. Enable Developers Options and USB Debugging (search online if needed)
2. Connect your phone to a Windows laptop
3. On the phone choose connection type Transfer files / Android Auto
(first time you will be prompted on your phone if you want to allow USB connection from this PC, choose Yes)
4. On the laptop install platform tools, open a command prompt and change directory to where they are installed
5. Enter command "adb devices"
6. The output should say:
List of devices attached
<your realme serial number> device
7. Enter command: "adb reboot fastboot"
8. The phone will enter the fastboot mode and display language selector. No need to do anything on the phone.
9. Enter command: "fastboot reboot recovery"
10. Nothing changes on the phone, no need to touch it this time either
11. Enter command: "adb devices"
12. The output will be:
List of devices attached
<your realme serial number> recovery
Here I installed realme Software&Driver Update tool from

Software Update - realme (India)

Update the latest software version on your realme phone.

www.realme.com

This may help if you're having issues at this step.
13. Enter the commands listed below ONE BY ONE. For some reason they didn't work when I entered them all together.

adb shell setprop persist.data.iwlan.enable true
adb shell setprop persist.dbg.ims_volte_enable 1
adb shell setprop persist.dbg.volte_avail_ovr 1
adb shell setprop persist.dbg.vt_avail_ovr 1
adb shell setprop persist.dbg.wfc_avail_ovr 1
adb shell setprop persist.radio.rat_on combine
adb shell setprop persist.radio.data_ltd_sys_ind 1
adb shell setprop persist.radio.data_con_rprt 1
adb shell setprop persist.radio.calls.on.ims 1
adb shell setprop persist.data.iwlan 1
adb shell setprop persist.data.iwlan.ipsec.ap 1
adb shell setprop persist.radio.volte.dan_support true
adb shell setprop persist.radio.VT_ENABLE 1
adb shell setprop persist.sys.cust.lte_config true
adb shell setprop persist.rcs.supported 1

adb reboot

14. The phone reboots and the VoLTE and WiFi Calling switches are there in Settings - Mobile Networks - <SIM> !

Note that I am not saying that your phone will display VoLTE or VoWiFi in the notification area but at least the switches (options) become available in settings

Thanks to the authors of the page above!

Thank you for saving my life! Hahahaha.
I've been looking for an engineering mode unlocker for my phone for a long time just to enable VoLTE because the unlocking tools such as the Gprotool and other secrecy decrypt unlocker are no longer working. It worked on my Realme Q2 5G(China Rom).This is the only solution. Also, the VOLTE will still remain even you restart your phone, unlike when using engineering mode, it will disappear when you restart.

Again, thank you very much

 

[kfngou]

Hey XDA,

I felt obliged to contribute since the following steps worked for me and I got VoLTE and WiFi Calling switches in settings in my Realme GT Neo 2 global version RMX3370 that is on Freedom Mobile in Canada.

All factory, no root required, no bootloader unlock required.
May work on other Realme models.

Source: https://realme-gadgetlife.net/how-to-enable-volte/ (in Japanese, I used Google Translate). I can't remember where I found this link, all credits go to where they are due.

Steps, check pictures in the above link:

1. Enable Developers Options and USB Debugging (search online if needed)
2. Connect your phone to a Windows laptop
3. On the phone choose connection type Transfer files / Android Auto
(first time you will be prompted on your phone if you want to allow USB connection from this PC, choose Yes)
4. On the laptop install platform tools, open a command prompt and change directory to where they are installed
5. Enter command "adb devices"
6. The output should say:
List of devices attached
<your realme serial number> device
7. Enter command: "adb reboot fastboot"
8. The phone will enter the fastboot mode and display language selector. No need to do anything on the phone.
9. Enter command: "fastboot reboot recovery"
10. Nothing changes on the phone, no need to touch it this time either
11. Enter command: "adb devices"
12. The output will be:
List of devices attached
<your realme serial number> recovery
Here I installed realme Software&Driver Update tool from

Software Update - realme (India)

Update the latest software version on your realme phone.

www.realme.com

This may help if you're having issues at this step.
13. Enter the commands listed below ONE BY ONE. For some reason they didn't work when I entered them all together.

adb shell setprop persist.data.iwlan.enable true
adb shell setprop persist.dbg.ims_volte_enable 1
adb shell setprop persist.dbg.volte_avail_ovr 1
adb shell setprop persist.dbg.vt_avail_ovr 1
adb shell setprop persist.dbg.wfc_avail_ovr 1
adb shell setprop persist.radio.rat_on combine
adb shell setprop persist.radio.data_ltd_sys_ind 1
adb shell setprop persist.radio.data_con_rprt 1
adb shell setprop persist.radio.calls.on.ims 1
adb shell setprop persist.data.iwlan 1
adb shell setprop persist.data.iwlan.ipsec.ap 1
adb shell setprop persist.radio.volte.dan_support true
adb shell setprop persist.radio.VT_ENABLE 1
adb shell setprop persist.sys.cust.lte_config true
adb shell setprop persist.rcs.supported 1

adb reboot

14. The phone reboots and the VoLTE and WiFi Calling switches are there in Settings - Mobile Networks - <SIM> !

Note that I am not saying that your phone will display VoLTE or VoWiFi in the notification area but at least the switches (options) become available in settings

Thanks to the authors of the page above!

I have just enabled this volte switch on my realme gt neo 2t following these steps. I can now enjoy volte without any 3G CS fallback anymore. It just simple and safety. No bootloader unlock and root required. Again, thank you very much.

 

[linux.alucard]

Working very well on my GT NEO2
Thank you very much!

 

[rapayatan225]

Hello when i type adb reboot fastboot my phone just rebooting not going in fastboot

 

[rapayatan225]

Thank you for saving my life! Hahahaha.
I've been looking for an engineering mode unlocker for my phone for a long time just to enable VoLTE because the unlocking tools such as the Gprotool and other secrecy decrypt unlocker are no longer working. It worked on my Realme Q2 5G(China Rom).This is the only solution. Also, the VOLTE will still remain even you restart your phone, unlike when using engineering mode, it will disappear when you restart.

Again, thank you very much

Pls help my phone just rebooting and pop up this on the screen "the serial is not matched fastboot_unlock_verify ok" when i type adb reboot fastboot my is oppo f11 pro

 

[lfc222222]

Hey XDA,

I felt obliged to contribute since the following steps worked for me and I got VoLTE and WiFi Calling switches in settings in my Realme GT Neo 2 global version RMX3370 that is on Freedom Mobile in Canada.

All factory, no root required, no bootloader unlock required.
May work on other Realme models.

Source: https://realme-gadgetlife.net/how-to-enable-volte/ (in Japanese, I used Google Translate). I can't remember where I found this link, all credits go to where they are due.

Steps, check pictures in the above link:

1. Enable Developers Options and USB Debugging (search online if needed)
2. Connect your phone to a Windows laptop
3. On the phone choose connection type Transfer files / Android Auto
(first time you will be prompted on your phone if you want to allow USB connection from this PC, choose Yes)
4. On the laptop install platform tools, open a command prompt and change directory to where they are installed
5. Enter command "adb devices"
6. The output should say:
List of devices attached
<your realme serial number> device
7. Enter command: "adb reboot fastboot"
8. The phone will enter the fastboot mode and display language selector. No need to do anything on the phone.
9. Enter command: "fastboot reboot recovery"
10. Nothing changes on the phone, no need to touch it this time either
11. Enter command: "adb devices"
12. The output will be:
List of devices attached
<your realme serial number> recovery
Here I installed realme Software&Driver Update tool from

Software Update - realme (India)

Update the latest software version on your realme phone.

www.realme.com

This may help if you're having issues at this step.
13. Enter the commands listed below ONE BY ONE. For some reason they didn't work when I entered them all together.

adb shell setprop persist.data.iwlan.enable true
adb shell setprop persist.dbg.ims_volte_enable 1
adb shell setprop persist.dbg.volte_avail_ovr 1
adb shell setprop persist.dbg.vt_avail_ovr 1
adb shell setprop persist.dbg.wfc_avail_ovr 1
adb shell setprop persist.radio.rat_on combine
adb shell setprop persist.radio.data_ltd_sys_ind 1
adb shell setprop persist.radio.data_con_rprt 1
adb shell setprop persist.radio.calls.on.ims 1
adb shell setprop persist.data.iwlan 1
adb shell setprop persist.data.iwlan.ipsec.ap 1
adb shell setprop persist.radio.volte.dan_support true
adb shell setprop persist.radio.VT_ENABLE 1
adb shell setprop persist.sys.cust.lte_config true
adb shell setprop persist.rcs.supported 1

adb reboot

14. The phone reboots and the VoLTE and WiFi Calling switches are there in Settings - Mobile Networks - <SIM> !

Note that I am not saying that your phone will display VoLTE or VoWiFi in the notification area but at least the switches (options) become available in settings

Thanks to the authors of the page above!

I tried using this method.
When I get to step #9, the adb shell response to “fastboot reboot recovery” is:
< waiting for device >

and nothing happens after that. Any idea how to resolve that?

 

[doongoo]

I tried using this method.
When I get to step #9, the adb shell response to “fastboot reboot recovery” is:
< waiting for device >

and nothing happens after that. Any idea how to resolve that?

quoted from the japanese site:
* If it stops at "waiting for any device" or does not recognize it, you need to manually install the driver from Device Manager. (Reference ↓)

 

[lfc222222]

quoted from the japanese site:
* If it stops at "waiting for any device" or does not recognize it, you need to manually install the driver from Device Manager. (Reference ↓)

Thanks for responding. Yes, I managed to follow these guidelines a few days ago, and was able to complete VoLTE enablement on my device!

 

[kfngou]

Hey XDA,

I felt obliged to contribute since the following steps worked for me and I got VoLTE and WiFi Calling switches in settings in my Realme GT Neo 2 global version RMX3370 that is on Freedom Mobile in Canada.

All factory, no root required, no bootloader unlock required.
May work on other Realme models.

Source: https://realme-gadgetlife.net/how-to-enable-volte/ (in Japanese, I used Google Translate). I can't remember where I found this link, all credits go to where they are due.

Steps, check pictures in the above link:

1. Enable Developers Options and USB Debugging (search online if needed)
2. Connect your phone to a Windows laptop
3. On the phone choose connection type Transfer files / Android Auto
(first time you will be prompted on your phone if you want to allow USB connection from this PC, choose Yes)
4. On the laptop install platform tools, open a command prompt and change directory to where they are installed
5. Enter command "adb devices"
6. The output should say:
List of devices attached
<your realme serial number> device
7. Enter command: "adb reboot fastboot"
8. The phone will enter the fastboot mode and display language selector. No need to do anything on the phone.
9. Enter command: "fastboot reboot recovery"
10. Nothing changes on the phone, no need to touch it this time either
11. Enter command: "adb devices"
12. The output will be:
List of devices attached
<your realme serial number> recovery
Here I installed realme Software&Driver Update tool from

Software Update - realme (India)

Update the latest software version on your realme phone.

www.realme.com

This may help if you're having issues at this step.
13. Enter the commands listed below ONE BY ONE. For some reason they didn't work when I entered them all together.

adb shell setprop persist.data.iwlan.enable true
adb shell setprop persist.dbg.ims_volte_enable 1
adb shell setprop persist.dbg.volte_avail_ovr 1
adb shell setprop persist.dbg.vt_avail_ovr 1
adb shell setprop persist.dbg.wfc_avail_ovr 1
adb shell setprop persist.radio.rat_on combine
adb shell setprop persist.radio.data_ltd_sys_ind 1
adb shell setprop persist.radio.data_con_rprt 1
adb shell setprop persist.radio.calls.on.ims 1
adb shell setprop persist.data.iwlan 1
adb shell setprop persist.data.iwlan.ipsec.ap 1
adb shell setprop persist.radio.volte.dan_support true
adb shell setprop persist.radio.VT_ENABLE 1
adb shell setprop persist.sys.cust.lte_config true
adb shell setprop persist.rcs.supported 1

adb reboot

14. The phone reboots and the VoLTE and WiFi Calling switches are there in Settings - Mobile Networks - <SIM> !

Note that I am not saying that your phone will display VoLTE or VoWiFi in the notification area but at least the switches (options) become available in settings

Thanks to the authors of the page above!

Here's an update for you guys who owned other latest oppo or oneplus model which get a "fastboot reboot recovery" unauthorized message with this method.

You can try to enable it with the tools Pixel IMS and Shizuku from this URL

非root・スマホ単体でVoLTEを有効化できる『Pixel IMS (pixel-volte-patch)』 - AndroPlus

非rootでVoLTEを有効化できる『pixel-volte-patch』を紹介します。 非root・スマホ単体でVoLTEを有効化 最近は有効化済みの中華スマホが増えたためあまり気にすることがなくなりつつあるVoLTEですが、非rootで有効化できる新たな方法が発見されました。

androplus.org

I have just done on my Onplus Ace 2V with this way.

 

[Sketths]

Here's an update for you guys who owned other latest oppo or oneplus model which get a "fastboot reboot recovery" unauthorized message with this method.

You can try to enable it with the tools Pixel IMS and Shizuku from this URL

非root・スマホ単体でVoLTEを有効化できる『Pixel IMS (pixel-volte-patch)』 - AndroPlus

非rootでVoLTEを有効化できる『pixel-volte-patch』を紹介します。 非root・スマホ単体でVoLTEを有効化 最近は有効化済みの中華スマホが増えたためあまり気にすることがなくなりつつあるVoLTEですが、非rootで有効化できる新たな方法が発見されました。

androplus.org

I have just done on my Onplus Ace 2V with this way.

It worked for me on Realme GT Master Edition! Thank you so much!

 

[darkhunter9]

Hey XDA,

I felt obliged to contribute since the following steps worked for me and I got VoLTE and WiFi Calling switches in settings in my Realme GT Neo 2 global version RMX3370 that is on Freedom Mobile in Canada.

All factory, no root required, no bootloader unlock required.
May work on other Realme models.

Source: https://realme-gadgetlife.net/how-to-enable-volte/ (in Japanese, I used Google Translate). I can't remember where I found this link, all credits go to where they are due.

Steps, check pictures in the above link:

1. Enable Developers Options and USB Debugging (search online if needed)
2. Connect your phone to a Windows laptop
3. On the phone choose connection type Transfer files / Android Auto
(first time you will be prompted on your phone if you want to allow USB connection from this PC, choose Yes)
4. On the laptop install platform tools, open a command prompt and change directory to where they are installed
5. Enter command "adb devices"
6. The output should say:
List of devices attached
<your realme serial number> device
7. Enter command: "adb reboot fastboot"
8. The phone will enter the fastboot mode and display language selector. No need to do anything on the phone.
9. Enter command: "fastboot reboot recovery"
10. Nothing changes on the phone, no need to touch it this time either
11. Enter command: "adb devices"
12. The output will be:
List of devices attached
<your realme serial number> recovery
Here I installed realme Software&Driver Update tool from

Software Update - realme (India)

Update the latest software version on your realme phone.

www.realme.com

This may help if you're having issues at this step.
13. Enter the commands listed below ONE BY ONE. For some reason they didn't work when I entered them all together.

adb shell setprop persist.data.iwlan.enable true
adb shell setprop persist.dbg.ims_volte_enable 1
adb shell setprop persist.dbg.volte_avail_ovr 1
adb shell setprop persist.dbg.vt_avail_ovr 1
adb shell setprop persist.dbg.wfc_avail_ovr 1
adb shell setprop persist.radio.rat_on combine
adb shell setprop persist.radio.data_ltd_sys_ind 1
adb shell setprop persist.radio.data_con_rprt 1
adb shell setprop persist.radio.calls.on.ims 1
adb shell setprop persist.data.iwlan 1
adb shell setprop persist.data.iwlan.ipsec.ap 1
adb shell setprop persist.radio.volte.dan_support true
adb shell setprop persist.radio.VT_ENABLE 1
adb shell setprop persist.sys.cust.lte_config true
adb shell setprop persist.rcs.supported 1

adb reboot

14. The phone reboots and the VoLTE and WiFi Calling switches are there in Settings - Mobile Networks - <SIM> !

Note that I am not saying that your phone will display VoLTE or VoWiFi in the notification area but at least the switches (options) become available in settings

Thanks to the authors of the page above!

Thank you man for this solution without root!

 

[leungda]

I cannot get into Step 9. When I enter "fastboot reboot recovery" then "ADB DEVICES". It shows the device as "Unauthorized" When my device is on the normal debug mode, it shows "Authorized" How can I fix it?

I have Neo3. Neo3T and Neo2 on UI 4.0 and I would like to have VoLTE on freedom mobile too.

 

[phoneaoio]

Hey XDA,

I felt obliged to contribute since the following steps worked for me and I got VoLTE and WiFi Calling switches in settings in my Realme GT Neo 2 global version RMX3370 that is on Freedom Mobile in Canada.

All factory, no root required, no bootloader unlock required.
May work on other Realme models.

Source: https://realme-gadgetlife.net/how-to-enable-volte/ (in Japanese, I used Google Translate). I can't remember where I found this link, all credits go to where they are due.

Steps, check pictures in the above link:

1. Enable Developers Options and USB Debugging (search online if needed)
2. Connect your phone to a Windows laptop
3. On the phone choose connection type Transfer files / Android Auto
(first time you will be prompted on your phone if you want to allow USB connection from this PC, choose Yes)
4. On the laptop install platform tools, open a command prompt and change directory to where they are installed
5. Enter command "adb devices"
6. The output should say:
List of devices attached
<your realme serial number> device
7. Enter command: "adb reboot fastboot"
8. The phone will enter the fastboot mode and display language selector. No need to do anything on the phone.
9. Enter command: "fastboot reboot recovery"
10. Nothing changes on the phone, no need to touch it this time either
11. Enter command: "adb devices"
12. The output will be:
List of devices attached
<your realme serial number> recovery
Here I installed realme Software&Driver Update tool from

Software Update - realme (India)

Update the latest software version on your realme phone.

www.realme.com

This may help if you're having issues at this step.
13. Enter the commands listed below ONE BY ONE. For some reason they didn't work when I entered them all together.

adb shell setprop persist.data.iwlan.enable true
adb shell setprop persist.dbg.ims_volte_enable 1
adb shell setprop persist.dbg.volte_avail_ovr 1
adb shell setprop persist.dbg.vt_avail_ovr 1
adb shell setprop persist.dbg.wfc_avail_ovr 1
adb shell setprop persist.radio.rat_on combine
adb shell setprop persist.radio.data_ltd_sys_ind 1
adb shell setprop persist.radio.data_con_rprt 1
adb shell setprop persist.radio.calls.on.ims 1
adb shell setprop persist.data.iwlan 1
adb shell setprop persist.data.iwlan.ipsec.ap 1
adb shell setprop persist.radio.volte.dan_support true
adb shell setprop persist.radio.VT_ENABLE 1
adb shell setprop persist.sys.cust.lte_config true
adb shell setprop persist.rcs.supported 1

adb reboot

14. The phone reboots and the VoLTE and WiFi Calling switches are there in Settings - Mobile Networks - <SIM> !

Note that I am not saying that your phone will display VoLTE or VoWiFi in the notification area but at least the switches (options) become available in settings

Thanks to the authors of the page above!

This method does not work with Realme GT Neo 3. You will be stuck with the Recovery adb mode and the adb command line would say: xxxxxx unauthorized.

 

[vegaboy91]

trích dẫn từ trang web tiếng Nhật:
* Nếu nó dừng ở trạng thái "chờ bất kỳ thiết bị nào" hoặc không nhận ra thiết bị, bạn cần cài đặt trình điều khiển theo cách thủ công từ Trình quản lý thiết bị. (Tham khảo ↓)

Can you send me driver update for realme gt neo 2. please