Develop Bugs

One V CDMA - Problem in enabling data connection

I am using a HTC One V CDMA (Virgin Mobile USA) in India on Reliance CDMA network. The phone was flashed to Reliance and everything is working fine ie I can make/receive calls/sms etc. 1x / EVDO credentials have already been written to the phone.
Now the issue is that I am not able to enable data or the data connection doesn't get enabled automatically. When I try to enable data it says "Disconnected because service is unavailable". But if I press the "Activate this device" button in the settings section, an activation screen 1..2..3 comes up, then wait for 3-4 sec, the 3G symbol gets displayed meaning its able to make a data connection. Now if I go back to the settings page and enable data it successfully connects, and I am able to access internet at EVDO speeds. But after some idle time, the data connection is automatically disconnected and to reconnect I need to repeat the above process. Even if I intentionally disconnect data and try to reconnect, it doesn't happen and I need to go through the "Activate this device" process.
I believe some sort of initialization is missing which is done during the "Activate this device" phase and hence I am able to connect. What could be the reason for this? Is it some setting/configuration that needs to be enabled?
Please pour your valuable tips to resolve this issue.
Thanks

Fixed the issue with auto connection of data, not sure what fixed it exactly, but here are the last changes that I made after which it started working.
You need to use the tool QPST (I used version 2.7.378, an older version didn't work) for this.
In the M.IP tab, disable all profiles except profile 1
Then edit profile 1 and make changes (check attachment)
Then in RmNet tab enable auto connect for device 0 and 1.
After that
PPP Config --> Um --> Enter user/pass as "net" (Req Pw enc should be unchecked)
PPP Config --> AN --> Enter the EVDO credentials given by the MEID registrar (Req Pw enc should be unchecked)
Please note that I got it working merely by trial and error and some of the above changes may not be required and I am not even sure why they are necessary , but with the above configuration I am able to enable data without any problem.

iamvarkey said:
Fixed the issue with auto connection of data, not sure what fixed it exactly, but here are the last changes that I made after which it started working.
You need to use the tool QPST (I used version 2.7.378, an older version didn't work) for this.
In the M.IP tab, disable all profiles except profile 1
Then edit profile 1 and make changes (check attachment)
Then in RmNet tab enable auto connect for device 0 and 1.
After that
PPP Config --> Um --> Enter user/pass as "net" (Req Pw enc should be unchecked)
PPP Config --> AN --> Enter the EVDO credentials given by the MEID registrar (Req Pw enc should be unchecked)
Please note that I got it working merely by trial and error and some of the above changes may not be required and I am not even sure why they are necessary , but with the above configuration I am able to enable data without any problem.
Click to expand...
Click to collapse
Thanks for the above method .. Did you use this method after loading the NVDump file given by the registrar ? ... ALso when i edit the UM and AM feilds and issue write to the phone its showing as the phone has a read only NV ITEMS.

yakaaithiri said:
Thanks for the above method .. Did you use this method after loading the NVDump file given by the registrar ? ... ALso when i edit the UM and AM feilds and issue write to the phone its showing as the phone has a read only NV ITEMS.
Click to expand...
Click to collapse
Well, I had loaded the NVDump earlier, but as I had mentioned it would connect first but if you disconnect or get disconnected it wouldn't reconnect.
Check if the SPC is correct, cause I never got any error like that.

iamvarkey said:
Well, I had loaded the NVDump earlier, but as I had mentioned it would connect first but if you disconnect or get disconnected it wouldn't reconnect.
Check if the SPC is correct, cause I never got any error like that.
Click to expand...
Click to collapse
OP, I am taking a HTC One V for my dad and plan to use it with reliance, could you please tell me what I need to do ?
I already unlocked and rooted the phone. Do I just walk into a reliance store or do something more on computer etc before going there ?

experx said:
OP, I am taking a HTC One V for my dad and plan to use it with reliance, could you please tell me what I need to do ?
I already unlocked and rooted the phone. Do I just walk into a reliance store or do something more on computer etc before going there ?
Click to expand...
Click to collapse
You are talking about Reliance CDMA right?
If yes you need to get the MEID registered, will cost you about Rs 500. Reliance store guys will not do it, have to get it done through some 3rd party provider.

It says Read only NV Items for me too

2kool2btrue said:
It says Read only NV Items for me too
Click to expand...
Click to collapse
That's fine. Its only for one particular NVITEM. Just ignore it.

Hello varkey bhai,
Please Help me with the problem.
1. my meid is registered with reliance.
2. my prl is 00005
3. i am using the handset since 10 months.
4. evdo is also activated on my number.
But i am just getting 1x speeds.
Only thing i feel, i am missing out is on the username,Password,NV file,akey etc.
I have not received the above details from my reigstrar
Can u please guide me how this can be done to start evdo speeds.
Thanks in advance

vakubhai said:
Only thing i feel, i am missing out is on the username,Password,NV file,akey etc.
I have not received the above details from my reigstrar
Click to expand...
Click to collapse
Without the correct EVDO credentials, you won't be able to get EVDO speeds. You need to check with your MEID registrar.
NV dump is not really required and the same can be configured manually if you have the credentials as I have described above. Since you are able to make and receive calls, it looks like the Akey is already set.

so that means if i dont get the credentials from the registrar EVDO can never be started on this handset??
iamvarkey said:
Without the correct EVDO credentials, you won't be able to get EVDO speeds. You need to check with your MEID registrar.
NV dump is not really required and the same can be configured manually if you have the credentials as I have described above. Since you are able to make and receive calls, it looks like the Akey is already set.
Click to expand...
Click to collapse

vakubhai said:
so that means if i dont get the credentials from the registrar EVDO can never be started on this handset??
Click to expand...
Click to collapse
You could check with some other person who does MEID registration, maybe they can retrieve the credentials. But without it, EVDO will not work.

i have an htc droid incredible and i am facing the same problem as mentioned above are the steps above same for my phone also

vikisharma said:
i have an htc droid incredible and i am facing the same problem as mentioned above are the steps above same for my phone also
Click to expand...
Click to collapse
Try it out. It should work.

NVITEM Dump file
iamvarkey said:
That's fine. Its only for one particular NVITEM. Just ignore it.
Click to expand...
Click to collapse
Hello iamvarkey,
i have a sprint htc one that i have flashed but still dont have signal for voice and data. will the nv dump file help resolve this issue and how can i get it.
thanks

jewelman said:
Hello iamvarkey,
i have a sprint htc one that i have flashed but still dont have signal for voice and data. will the nv dump file help resolve this issue and how can i get it.
thanks
Click to expand...
Click to collapse
Simply by loading the Reliance PRL file, you should have voice signal, if not you are doing something wrong.

iamvarkey said:
Simply by loading the Reliance PRL file, you should have voice signal, if not you are doing something wrong.
Click to expand...
Click to collapse
i had done that but didnt work. the phone was sent to me without activating it first with sprint, can this affect it

jewelman said:
i had done that but didnt work. the phone was sent to me without activating it first with sprint, can this affect it
Click to expand...
Click to collapse
I don't think that would be a problem.
Make sure you are using the right PRL file.

No above steps required.
You must have flashed NV Dump already.
Your phone must be activated via *228 already.
Just perform below mentioned steps :
1) Put your phone in Diag Mode by dialing ##3424#
2) Get HTC Diag Mode driver if you don't have it already
3) Download DFS Demo version from DFS Website
4) Connect your phone with DFS, send SPC
5) Now, go to Programming tab -> Data ->
6) Click Read
7) At PPP tab, write "net" (without quotes) to SIP NAI, UID, Pwd field.
Restart the device and here you go, your device would get connected to internet instantly.

keval32 said:
No above steps required.
You must have flashed NV Dump already.
Your phone must be activated via *228 already.
Just perform below mentioned steps :
1) Put your phone in Diag Mode by dialing ##3424#
2) Get HTC Diag Mode driver if you don't have it already
3) Download DFS Demo version from DFS Website
4) Connect your phone with DFS, send SPC
5) Now, go to Programming tab -> Data ->
6) Click Read
7) At PPP tab, write "net" (without quotes) to SIP NAI, UID, Pwd field.
Restart the device and here you go, your device would get connected to internet instantly.
Click to expand...
Click to collapse
Keval,
I recently bought a HTC One E8 and am using Reliance CDMA on Slot-1 and facing this issue.
Would the steps jotted by you help me?
Thanks,
Vinay

[q] [help] imei null - how to fix

When i put on the chip, the IMEI set to NULL
I've already tried many ways to fix this, but no success...
Please, someone help me!
I don't want to lost my optimus G!
thanks

You should restore your imei with your EFS backup...have you unlock with freegee or you are completely stock and have never touched nothing?
Sent from my LG-F180K using XDA Free mobile app

Sorin90 said:
You should restore your imei with your EFS backup...have you unlock with freegee or you are completely stock and have never touched nothing?
Sent from my LG-F180K using XDA Free mobile app
Click to expand...
Click to collapse
first of all thanks by your attention!
I do not have a backup...
i don't know what to do...
i've unlocked with freegee many times...
but this time i got this problem!

renanreno said:
first of all thanks by your attention!
I do not have a backup...
i don't know what to do...
i've unlocked with freegee many times...
but this time i got this problem!
Click to expand...
Click to collapse
Retrieve IMEI in your LG Optimus G in case of not make previous backup
The method I describe below was developed for LG G2 but has been tested successfully in the Optimus G so it's perfectly useful:
Requirements:
- The mobile must have the Stock ROM (4.1.2 or 4.4.2).
- Download Tool QSTP:
https://mega.co.nz/#!2phwmYhY!DXozTvsU4pDD5PKJcYWnuC5nKQEA0skuFeN-90dFjQU
- Download Tool IMEI Converter:
https://dl.dropboxusercontent.com/u/84115590/IMEI-Converter.zip
Steps:
1 Unzip the tool IMEI Converter to a folder:
2 Unzip tool QPST 2.7_build_4.11 in a folder and run the installation file (Setup) to install on your computer:
3 Now on the phone to enable USB Debugging. If you do not know how you can find this option in the Settings> Developmet Options>USB debugging and activate.
5 Connect the device to your computer.
6 Run the QSPT, to set it up you are clicking on the PORTS tab, then click on the ADD NEW PORT option.
7 The current port as should COM4 or 5. Note: If you do not recognize these ports any port try to recognize the phone or another PC in the latter case.
8 Select the port and click OK. The port should show the active phone.
9 Select the phone (APQ8064) and click the Download Software option from the Start Clients menu.
10 Now give click the Backup tab. It should show the phone port.
11 Click the Start tab to start doing the backup.
12 Now find the folder named BIN located in the path:
C:/program files/Qualcomm/QSPT/, open the BIN folder and execute the file RF_NV_Manager
13 Click in File> Read from phone. The IMEI number of the phone should appear in item number 550: NV_UV_IMEI_1
If you appear get an error
14 They select OK and then click on File> Read RF NVitems supported.
15. Click on item 550. Should be displayed 9 boxes in white (empty).
16 Now run the file IMEIConverter.exe
17 Then write your IMEI (15 digits) in the Enter IMEI field. If you do not know what they find in the phone box, in some models even Optimus G is glued on the back thereof, or in the phone bill.
*** - Then click on the button <CONVERT IMEI>.
** - 18 Should appear two groups of 9 digits
18. In the program RF_NV_Manager activated the Hex box
19 Now 9 boxes appear, type the numbers generated IMEI Convert starting from the left, should be written in each box two digits consecutively until the 9 squares remain full.
20 Once the 9 squares are filled correctly you have to go to Setting option> comport> and select the port to which you are connected again and give OK
21 Select the Write NV tab.
22 Then click File> Readfrom phone.
The item number 550 should now appear.
24 Disconnect the USB cable and restart the phone.
25 Open the dialer (phone dialer) dial *#06# You should display the IMEI of your phone and the phone should be connected to the carrier signal without problems.
Important Note:
- If you give Error in step 13 run again and Method in step 13 before you dial them run error step 20.
Good luck and any thing sending me a message and i help. :good:

whit efs profesional is more easy

syverman said:
whit efs profesional is more easy
Click to expand...
Click to collapse
I do not know the method you mentioned, but in any case I have already given an effective alternative for him to solve your problem, since no one has helped so far.

Milos Rea said:
Retrieve IMEI in your LG Optimus G in case of not make previous backup
The method I describe below was developed for LG G2 but has been tested successfully in the Optimus G so it's perfectly useful:
Requirements:
- The mobile must have the Stock ROM (4.1.2 or 4.4.2).
- Download Tool QSTP from this Post:
http://forum.xda-developers.com/showthread.php?t=1942417
- Download Tool IMEI Converter from this Post (item 2):
*http://forum.xda-developers.com/showthread.php?t=2701861
Steps:
1 Unzip the tool IMEI Converter to a folder:
2 Unzip tool QPST 2.7_378 in a folder and run the installation file (Setup) to install on your computer:
3 Now on the phone to enable USB Debugging. If you do not know how you can find this option in the Settings> Developmet Options>USB debugging and activate.
5 Connect the device to your computer.
6 Run the QSPT, to set it up you are clicking on the PORTS tab, then click on the ADD NEW PORT option.
7 The current port as should COM4 or 5. Note: If you do not recognize these ports any port try to recognize the phone or another PC in the latter case.
8 Select the port and click OK. The port should show the active phone.
9 Select the phone (APQ8064) and click the Download Software option from the Start Clients menu.
10 Now give click the Backup tab. It should show the phone port.
11 Click the Start tab to start doing the backup.
12 Now find the folder named BIN located in the path:
C:/program files/Qualcomm/QSPT/, open the BIN folder and execute the file RF_NV_Manager
13 Click in File> Read from phone. The IMEI number of the phone should appear in item number 550: NV_UV_IMEI_1
If you appear get an error
14 They select OK and then click on File> Read RF NVitems supported.
15. Click on item 550. Should be displayed 9 boxes in white (empty).
16 Now run the file IMEIConverter.exe
17 Then write your IMEI (15 digits) in the Enter IMEI field. If you do not know what they find in the phone box, in some models even Optimus G is glued on the back thereof, or in the phone bill.
*** - Then click on the button <CONVERT IMEI>.
** - 18 Should appear two groups of 9 digits
18. In the program RF_NV_Manager activated the Hex box
19 Now 9 boxes appear, type the numbers generated IMEI Convert starting from the left, should be written in each box two digits consecutively until the 9 squares remain full.
20 Once the 9 squares are filled correctly you have to go to Setting option> comport> and select the port to which you are connected again and give OK
21 Select the Write NV tab.
22 Then click File> Readfrom phone.
The item number 550 should now appear.
24 Disconnect the USB cable and restart the phone.
25 Open the dialer (phone dialer) dial * # 06 # You should display the IMEI of your phone and the phone should be connected to the carrier signal without problems.
Important Note:
- If you give Error in step 13 run again and Method in step 13 before you dial them run error step 20.
Good luck and any thing sending me a message and i help. :good:
Click to expand...
Click to collapse
I did everything but it is not with original imei of my carrier, is with another imei. Because?

Milos Rea said:
Retrieve IMEI in your LG Optimus G in case of not make previous backup
The method I describe below was developed for LG G2 but has been tested successfully in the Optimus G so it's perfectly useful:
Requirements:
- The mobile must have the Stock ROM (4.1.2 or 4.4.2).
- Download Tool QSTP from this Post:
http://forum.xda-developers.com/showthread.php?t=1942417
- Download Tool IMEI Converter from this Post (item 2):
*http://forum.xda-developers.com/showthread.php?t=2701861
Steps:
1 Unzip the tool IMEI Converter to a folder:
2 Unzip tool QPST 2.7_378 in a folder and run the installation file (Setup) to install on your computer:
3 Now on the phone to enable USB Debugging. If you do not know how you can find this option in the Settings> Developmet Options>USB debugging and activate.
5 Connect the device to your computer.
6 Run the QSPT, to set it up you are clicking on the PORTS tab, then click on the ADD NEW PORT option.
7 The current port as should COM4 or 5. Note: If you do not recognize these ports any port try to recognize the phone or another PC in the latter case.
8 Select the port and click OK. The port should show the active phone.
9 Select the phone (APQ8064) and click the Download Software option from the Start Clients menu.
10 Now give click the Backup tab. It should show the phone port.
11 Click the Start tab to start doing the backup.
12 Now find the folder named BIN located in the path:
C:/program files/Qualcomm/QSPT/, open the BIN folder and execute the file RF_NV_Manager
13 Click in File> Read from phone. The IMEI number of the phone should appear in item number 550: NV_UV_IMEI_1
If you appear get an error
14 They select OK and then click on File> Read RF NVitems supported.
15. Click on item 550. Should be displayed 9 boxes in white (empty).
16 Now run the file IMEIConverter.exe
17 Then write your IMEI (15 digits) in the Enter IMEI field. If you do not know what they find in the phone box, in some models even Optimus G is glued on the back thereof, or in the phone bill.
*** - Then click on the button <CONVERT IMEI>.
** - 18 Should appear two groups of 9 digits
18. In the program RF_NV_Manager activated the Hex box
19 Now 9 boxes appear, type the numbers generated IMEI Convert starting from the left, should be written in each box two digits consecutively until the 9 squares remain full.
20 Once the 9 squares are filled correctly you have to go to Setting option> comport> and select the port to which you are connected again and give OK
21 Select the Write NV tab.
22 Then click File> Readfrom phone.
The item number 550 should now appear.
24 Disconnect the USB cable and restart the phone.
25 Open the dialer (phone dialer) dial * # 06 # You should display the IMEI of your phone and the phone should be connected to the carrier signal without problems.
Important Note:
- If you give Error in step 13 run again and Method in step 13 before you dial them run error step 20.
Good luck and any thing sending me a message and i help. :good:
Click to expand...
Click to collapse
Dear Sir, I am using this process for restoring efs/Imei of my LG optimus G f180l. the port shows in my system COM5 and when i swich my phone in LG software mode . but in step 13 it gives the error(could not communicate in diagnostic mode) during backing up. please guide me what I have to do and what mistake m I doing. PLease

gm sheikh said:
Dear Sir, I am using this process for restoring efs/Imei of my LG optimus G f180l. the port shows in my system COM5 and when i swich my phone in LG software mode . but in step 13 it gives the error(could not communicate in diagnostic mode) during backing up. please guide me what I have to do and what mistake m I doing. PLease
Click to expand...
Click to collapse
put it in charge only, that help for me when i use it a long time ago

gm sheikh said:
Dear Sir, I am using this process for restoring efs/Imei of my LG optimus G f180l. the port shows in my system COM5 and when i swich my phone in LG software mode . but in step 13 it gives the error(could not communicate in diagnostic mode) during backing up. please guide me what I have to do and what mistake m I doing. PLease
Click to expand...
Click to collapse
Hi, if you get the error in step 13 test select Setting option> comport> and select the port to which you are connected again and give OK. Good luck

Hey guys, I will reactivate this topic a little. I ve got LG F180K and I converted it to E975 without doing EFS backup (still had imei number but no signal). I flashed modem for K and it still didnt work, flashed L modem and it...worked. No LTE and no 2G, only 3G, still imei.
What to do then if I want come back to F180K ROM? (NO EFS BACKUP)

If you unlocked using freegee the imei backup folder is their in your internal storage root folder. freegee backups even if you don't choose to.

akahroba said:
If you unlocked using freegee the imei backup folder is their in your internal storage root folder. freegee backups even if you don't choose to.
Click to expand...
Click to collapse
I didnt do freegee

BartxGamer said:
Hey guys, I will reactivate this topic a little. I ve got LG F180K and I converted it to E975 without doing EFS backup (still had imei number but no signal). I flashed modem for K and it still didnt work, flashed L modem and it...worked. No LTE and no 2G, only 3G, still imei.
What to do then if I want come back to F180K ROM? (NO EFS BACKUP)
Click to expand...
Click to collapse
Do this step for no signal if your IMEI is correct(not null).Root is necessary for this step
Install "SQLite editer" from Google play to open "settings.db" in location "Data\data\com.android.providers.settings\database s" select "global" -> find "subscription_mode" change value "1" to "0" then save and exit.

kashifarif said:
Do this step for no signal if your IMEI is correct(not null).Root is necessary for this step
Install "SQLite editer" from Google play to open "settings.db" in location "Data\data\com.android.providers.settings\database s" select "global" -> find "subscription_mode" change value "1" to "0" then save and exit.
Click to expand...
Click to collapse
Are you sure about that?

renanreno said:
When i put on the chip, the IMEI set to NULL
I've already tried many ways to fix this, but no success...
Please, someone help me!
I don't want to lost my optimus G!
thanks
Click to expand...
Click to collapse
i have same problem due to convert f180k to e975. i have solved it by factory rest after flash and after factory reset (setting->backup and reset-> reset phone) restore IMEI and then again factory reset.
Factory reset after flash is main solution.

Sorry for necroing an old thread, but my lg g6 t- mobile h872 , suddenly says IMEI null after the latest 20a-e update. I never rooted, or flashed any custom roms before
What should I do?

Nexus 5X LTE not working

Hello,
i have some problem with my nexus 5Xwith cyanogenmod 13.
Problem was started when i download application Field Test for Nexus 5x/6p
In lte data menu i try change LTE On/Off and change disable and enable band 26 and 41.
From this time all LTE not working. - maybe some parameters was change in modem.
Serveral times i try reflash original rom and CM13 and reflash radio...
I install application QPST and QXDM and in NV browser i have on line : 06828 and 06829 value : 1786875150815
I dont now if this value is correct, but if i try put new value according NV calculator or some numbers from this forum, whitch i found. New values is saved in phone only while i make reboot the phone and LTE still not working.
Backup original NV values i dont have.
Can somebody help me please ?
Thank you

Thank you ...

radimpodzemny said:
Hello,
i have some problem with my nexus 5Xwith cyanogenmod 13.
Problem was started when i download application Field Test for Nexus 5x/6p
In lte data menu i try change LTE On/Off and change disable and enable band 26 and 41.
From this time all LTE not working. - maybe some parameters was change in modem.
Serveral times i try reflash original rom and CM13 and reflash radio...
I install application QPST and QXDM and in NV browser i have on line : 06828 and 06829 value : 1786875150815
I dont now if this value is correct, but if i try put new value according NV calculator or some numbers from this forum, whitch i found. New values is saved in phone only while i make reboot the phone and LTE still not working.
Backup original NV values i dont have.
Can somebody help me please ?
Thank you
Click to expand...
Click to collapse
Just a quick question. Why were you trying to change LTE On/Off in the Engineering Screen? Were you only trying to enable LTE bands or did you have a problem with your data connection? If you were having data problems before downloading the Field Test app, did you know there are some know data issues with CM13. Did you lose your LTE connection?
Also, what gave you the idea to download QPST & QDXM? Do you have prior experience with these applications?
Also, since you have CM13 installed on your 5x, did you try and restore a backup in TWRP that you have saved to see if it corrected your problem?
Which carrier are you with?
Sent from my Nexus 6

Hello,
thank you for your answare, and sorry for my english.
Before problem phone was new and all was worked, but i tryed make some changes, because i searching solution for changng band and editing priority for diferrent LTE band.
Now my problem with no connection on lte is solve, i write zeros to partition modem1 and modem2 from modem filesystem and modem itself after restart phone reset factory setting, but i dont now where modem took IMEI, because i think IMEI is save on this partition...
-----------------------------------------------------------------------------------------------------------------------------------------------------------
But i still dont understed why, after reboot changes on line ID 06828 and ID 06829 comming back originaly number .
Bestest solution for me wold be if i find in NV parameter band priority according signal strenght. Or some application (IN Phone) for disabling and enabling all LTE band without computer.
My most-used bands is : 800,1800,2600Mhz

radimpodzemny said:
Hello,
thank you for your answare, and sorry for my english.
Before problem phone was new and all was worked, but i tryed make some changes, because i searching solution for changng band and editing priority for diferrent LTE band.
Now my problem with no connection on lte is solve, i write zeros to partition modem1 and modem2 from modem filesystem and modem itself after restart phone reset factory setting, but i dont now where modem took IMEI, because i think IMEI is save on this partition...
-----------------------------------------------------------------------------------------------------------------------------------------------------------
But i still dont understed why, after reboot changes on line ID 06828 and ID 06829 comming back originaly number .
Bestest solution for me wold be if i find in NV parameter band priority according signal strenght. Or some application (IN Phone) for disabling and enabling all LTE band without computer.
My most-used bands is : 800,1800,2600Mhz
Click to expand...
Click to collapse
Shortcut Master Lite in the Play Store will allow you to access the LTE Engineering to set band priority. Open the app and click the 3-dot menu In the top right corner. Click on "secret code explorer" and allow the list to populate. You will be looking for a numbered code like "3282” or "33284". Click on each one, select explore from the menu and look thru each selection. The one you will be looking for will say something like Sprint LTE bands editor. You can enable bands 25, 26 & 41 and set band priority. When asked to enter your MSL, enter 000000 and tap verify. You can figure the app out. It takes a little time to get used to how the app works. Good luck and let me know if you need any more help.
P.S. I dont know why you would start changing NV values without any experience using QPST & QDXM. You can make a mistake very easily. Be careful when making changes. I would start fresh by fastboot flashing the factory images, bootloader and radio and start over. Just my opinion.
What carrier are you with and where are you located?
Sent from my Nexus 6 using XDA-Developers mobile app

Why i start Edit without experience ? It is easy, because i need get experience
Band 25,26 And 41 is not important for me.
I need disable and enable and set priority for 800 1800 and 2600mhz, quickly from the phone...
My location is czech republic and switzerland.

How to enable Volte on Stock ROM - Help?

I spend days but cannot get volte provisioned on T-Mobile USA.
Things I've done so far
1. Volte Carrier check id already off via *#*#86583#*#*
2. Have temp root access but unable keep edited build.prop, reboot cause a restore of original build.prop, reference link here
3. Try QPST method from this thread and many similar ones, but PDC cannot recognize our phone even QPST see it fine and connected on a com port. Have to use su command "setprop sys.usb.config diag,adb " to make the connection.
Everyone have any ideas?

Your provider may need to enable it from their end as well.
At least that's what mine had to do before I could get VoLTE working.

IkkeZelf1000 said:
Your provider may need to enable it from their end as well.
At least that's what mine had to do before I could get VoLTE working.
Click to expand...
Click to collapse
That's not an option, T-Mobile and all US carriers will not do that, tried already.

It worked for my Familys Phone A2 Lite with Android 9 (don't trust Android 10 update many reports of bugs)
with *#*#86583#*#* then you see HD Symbol in right corner. Your Provider must support VoLTE also some Providers in my Country they only enabled it for certain mobile plan.

How To Guide working method to enable Volte and Vowifi using PDC (no root)

1. install Logkit v1.0.apk, and Engineering Mode v1.01.0.171117173719.apk
2. Open Phone and type *#800# select Engineering Mode
3. Oneplus Logkit ---> Function Switch ---> enable VoLTE, VoWifi и VT
4. Reboot
5. Open settings and enable VOLTE and voWi-fi
6. Open Phone and type *#801# select Engineering Mode
7. Switch to full port switch
8. Open settings and enable debugging by usb mode
9. adb reboot ftm
10. adb shell
11. setprop sys.usb.config diag,diag_mdm,qdss,qdss_mdm,serial_cdev,dpl,rmnet,adb
12. Open PDC and select profile ( sub0 and sub1 then click activate for VoLTE PTCRB for example)
13. Close PDC
14. adb reboot

Thanks that worked perfectly. Do you know how to enable 5G? it doesn't show up in setting as an option

bilaloga said:
Thanks that worked perfectly. Do you know how to enable 5G? it doesn't show up in setting as an option
Click to expand...
Click to collapse
*#*#4636#*#* then Phone Information -> Set preferred network type. Choose :
NR/LTE/TDSCDMA/CDMA/EvDo/GSM/WCDMA
Or
NR/LTE/TDSCDMA/GSM/WCDMA
try this first

it works, thank you

Obeid Allah said:
1. install Logkit v1.0.apk, and Engineering Mode v1.01.0.171117173719.apk
2. Open Phone and type *#800# select Engineering Mode
3. Oneplus Logkit ---> Function Switch ---> enable VoLTE, VoWifi и VT
4. Reboot
5. Open settings and enable VOLTE and voWi-fi
6. Open Phone and type *#801# select Engineering Mode
7. Switch to full port switch
8. Open settings and enable debugging by usb mode
9. adb reboot ftm
10. adb shell
11. setprop sys.usb.config diag,diag_mdm,qdss,qdss_mdm,serial_cdev,dpl,rmnet,adb
12. Open PDC and select profile ( sub0 and sub1 then click activate for VoLTE PTCRB for example)
13. Close PDC
14. adb reboot
Click to expand...
Click to collapse
First of all, apologies for asking such basic questions.
I have done something similar to this procedure on a 5 and a 6 previously, but now I am the proud owner of a 9 pro europe variant and would like to enable VOLTE as per your instructions.
where do I find th apk's listed on your instructions list?
What version of PDC is needed, I have one installed from 1 year ago is it the same one?

Awakensoul said:
First of all, apologies for asking such basic questions.
I have done something similar to this procedure on a 5 and a 6 previously, but now I am the proud owner of a 9 pro europe variant and would like to enable VOLTE as per your instructions.
where do I find th apk's listed on your instructions list?
What version of PDC is needed, I have one installed from 1 year ago is it the same one?
Click to expand...
Click to collapse
apks

Awakensoul said:
First of all, apologies for asking such basic questions.
I have done something similar to this procedure on a 5 and a 6 previously, but now I am the proud owner of a 9 pro europe variant and would like to enable VOLTE as per your instructions.
where do I find th apk's listed on your instructions list?
What version of PDC is needed, I have one installed from 1 year ago is it the same one?
Click to expand...
Click to collapse
latest qpst with pdc

Obeid Allah said:
latest qpst with pdc
Click to expand...
Click to collapse

Thank you so much!
I am still not able to complete the full procedure though.
After step 11, the shell accepts the command but when I load pdc the phone does not show up in pdc.
I used the pdv version in the attachment. Any ideas on why this is happening?

Awakensoul said:
Thank you so much!
I am still not able to complete the full procedure though.
After step 11, the shell accepts the command but when I load pdc the phone does not show up in pdc.
I used the pdv version in the attachment. Any ideas on why this is happening?
Click to expand...
Click to collapse
try install latest qualcomm drivers

Reinstalling Qualcomm drivers did the trick with PDC recognizing the phone.
I tried to use two different profiles that used to work on my 5 with VODAFONE PORTUGAL, and as such i tried with India-volte-vodafone and with telefonica_uk_Commercial.
None of them gave me working VOLTE with Vodafone Portugal.
For both of them I activated sub0 and then sub1 and confirmed that the status on PDC shows as active, then rebooted but phone is not showing VOLTE enabled. And under the SIM settings the VOLTE switch is enabled.
Any ideas? Maybe a different profile?

Awakensoul said:
Reinstalling Qualcomm drivers did the trick with PDC recognizing the phone.
I tried to use two different profiles that used to work on my 5 with VODAFONE PORTUGAL, and as such i tried with India-volte-vodafone and with telefonica_uk_Commercial.
None of them gave me working VOLTE with Vodafone Portugal.
For both of them I activated sub0 and then sub1 and confirmed that the status on PDC shows as active, then rebooted but phone is not showing VOLTE enabled. And under the SIM settings the VOLTE switch is enabled.
Any ideas? Maybe a different profile?
Click to expand...
Click to collapse
Flash the following magisk module

Awakensoul said:
Reinstalling Qualcomm drivers did the trick with PDC recognizing the phone.
I tried to use two different profiles that used to work on my 5 with VODAFONE PORTUGAL, and as such i tried with India-volte-vodafone and with telefonica_uk_Commercial.
None of them gave me working VOLTE with Vodafone Portugal.
For both of them I activated sub0 and then sub1 and confirmed that the status on PDC shows as active, then rebooted but phone is not showing VOLTE enabled. And under the SIM settings the VOLTE switch is enabled.
Any ideas? Maybe a different profile?
Click to expand...
Click to collapse
Try using Vodafone UK volte profile and close the pdc application after activation before restarting

Steve0007 said:
Flash the following magisk module
Click to expand...
Click to collapse
This for rooted phones not suitable for his case

I did everything according to this guide and finally got VoLTE. Thank you.
For me 5G is not working, but I have 4G+ all the time, even during phone calls

procent said:
I did everything according to this guide and finally got VoLTE. Thank you.
For me 5G is not working, but I have 4G+ all the time, even during phone calls
Click to expand...
Click to collapse
Obeid Allah said:
*#*#4636#*#* then Phone Information -> Set preferred network type. Choose :
NR/LTE/TDSCDMA/CDMA/EvDo/GSM/WCDMA
Or
NR/LTE/TDSCDMA/GSM/WCDMA
try this first
Click to expand...
Click to collapse

Anyone have a link to the APK?

Obeid Allah said:
apks
Click to expand...
Click to collapse
daltonhrrll said:
Anyone have a link to the APK?
Click to expand...
Click to collapse

You're so helpful lol

This worked perfectly. Thnx