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[GUIDE] Fix/Enable 5G and DSS

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max.mueller.hans

New member
Dec 1, 2021
2
2
Quick response, I might write a proper post with more detailled steps but I don't have the time to do so at the moment.

I assume you already have Qualcomm drivers at hand, QPST installed in your computer, ADB ready and debugging option enabled in your phone. So I followed these steps (the problem of not being able to use Engineer Mode apk is solved with steps 1 to 3, but don't forget to apply step 6 when you finish):

1. adb reboot ftm
2. adb shell
3. setprop sys.usb.config diag,diag_mdm,adb
4. Go to Control Panel – Device Manager .. you will see two unknown device.
Right click on the first one – Update Driver – browse my computer drivers - Let me pick form a list of available drivers- click on Have Disk ..- show all devices browse then go to the Qualcomm Drivers that you download earlier. Then do the same to the other unknown Driver. Choose 9018 for both unknown drivers.
5. Change carrier_policy XML files with QPST
6. adb reboot

Just found out that using setprop sys.usb.config diag,adb without rebooting into ftm mode is already sufficient. From there on the steps are the same as already mentioned and everything worked.

Thank you very much !
 
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dominicstg2

Senior Member
Feb 23, 2013
1,126
93
can someone from australia who is on optus give me the 3 files carrier_policy, carrier_policy.xml_Subscription01 and lte_feature_retrictions
 

Rootk1t

Senior Member
Jun 2, 2013
1,535
674
Could you please tell us how you managed to use QPST with LineageOS? I tried to install the EngineerMode apk but it doesn't work and I also can't install those special drivers needed for QPST. Windows always gives me an error message that the driver files are not compatible. Is there a way to access those settings without having to revert back to OOS for its Engineer Mode ?
Also don't forget to disable signature protection in Windows before istalling drivers or you'll have to install drivers each time you put smartphone in diagnostics mode.
 
Last edited:

Rootk1t

Senior Member
Jun 2, 2013
1,535
674
I found carrier_policy.xml but there is no carrier_policy.xml_Subscription01, is that a problem? There is only a file called hardware_band_filtering.xml_Subscription01.
carrier_policy.xml_Subscription01 is for 2nd sim card. If you don't have it in your smartphone, you won't have this file.
 
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Elresion

New member
Dec 8, 2021
3
0
Is there anyone from Portugal that have tried this? I've tried on my phone, but it seems to lost the hability to even connect to LTE, if I use your configurations.

I've also tried to edit the LTE restrictions and add the details for every portuguese carrier, but it does not work.

Any ideas?
 

21prods

Senior Member
Sep 2, 2013
70
20
Is there anyone from Portugal that have tried this? I've tried on my phone, but it seems to lost the hability to even connect to LTE, if I use your configurations.

I've also tried to edit the LTE restrictions and add the details for every portuguese carrier, but it does not work.

Any ideas?
Follow the tutorial but use the files from the below link for carrier policy, instead. They work great in Europe (at least they do in the UK and in Spain as well).
 

Elresion

New member
Dec 8, 2021
3
0
Follow the tutorial but use the files from the below link for carrier policy, instead. They work great in Europe (at least they do in the UK and in Spain as well).
Thanks I will test it!

Could you please let me know, if I should also follow the steps to edit the LTE_restrictions?
 

21prods

Senior Member
Sep 2, 2013
70
20
Thanks I will test it!

Could you please let me know, if I should also follow the steps to edit the LTE_restrictions?
I don't know if you should, to be honest, but I did it anyway to add the codes of the different mobile companies in Spain and Portugal.
But I don't know if it makes any difference, really.
 

Elresion

New member
Dec 8, 2021
3
0
I don't know if you should, to be honest, but I did it anyway to add the codes of the different mobile companies in Spain and Portugal.
But I don't know if it makes any difference, really.
Thanks.

I've already discovered why with these settings it was not connecting with 4g. I've enabled VoLTE through the logkit change, and apparently if I change the policy file, I can't connect to 4g.
So I disabled VoLTE, and copy the policies you've mentioned, and now I'm able to connect to 4g again. Just to be sure. Are you able to use these policies and have VoLTE active?
I just need to test if I'm able to connect to 5G, since I don't have near my home.
 

21prods

Senior Member
Sep 2, 2013
70
20
Thanks.

I've already discovered why with these settings it was not connecting with 4g. I've enabled VoLTE through the logkit change, and apparently if I change the policy file, I can't connect to 4g.
So I disabled VoLTE, and copy the policies you've mentioned, and now I'm able to connect to 4g again. Just to be sure. Are you able to use these policies and have VoLTE active?
I just need to test if I'm able to connect to 5G, since I don't have near my homeworks
In my case, VoLTE works but I'm on LOS 18.1, not OOS.
 

georgiapi

Senior Member
Oct 28, 2011
445
53
North GA
alcphoto.net
I just signed up with Google fi which will be T-Mobil here. I got a tracking number for a Google Fi 5G Talk Text & Data Sim Kit.
My 8T is from Oneplus, I already have an AT&T 4G Sim in Slot 1.

I'll boot to the new sim and see what happens and report.
 

xf.w08

Member
Dec 16, 2021
18
3
Would any of you be kind enough to upload your backup of the replaced files? if it is from the global version it would be much better as I cannot get them back and my phone has gotten too hot since then, with MSM it does not improve anything🙏
 

xen423

Member
Mar 27, 2009
9
3
OnePlus 8T
Would any of you be kind enough to upload your backup of the replaced files? if it is from the global version it would be much better as I cannot get them back and my phone has gotten too hot since then, with MSM it does not improve anything🙏
KB05AA Verizon STOCK configs
 

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  • verizon stock.zip
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paul222008

Senior Member
Jul 14, 2013
495
62
* To enable (force) 5G SA, you have to use Network Signal Guru app to change NR5G Mode from NSA to NSA/SA or SA. But this will require root access.

Is there a way to enable force 5G SA without root?
 

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  • 1
    I wonder if we can enable N77 for Verizon somehow? The X55 modem seems to be qualified. I saw some site mentioning generic_band_restrictions with no details. Some of the com.oem.rftoolkit.* apps seem to indicate potential but I am only dreaming at the moment. Obviously proceed with caution.
    I can say nothing about Verizon. But you can enable some additional features on X55 mode.
  • 10
    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 doesn't require root access until you don't want to access 5G in SA (standalone) mode.

    I'm NOT responsible to any damage you make to your phone. There's barely any chance to damage anything, but you've been warned.

    Requirements:
    • EngineerMode apk installed on your phone.
    • USB Debugging enabled on your phone.
    • OnePlus drivers installed on your desktop.
    • QPST app installed on your desktop.
    • Qualcomm diagnostic drivers.
    Downloads:

    Instruction #1 - enable 5G:
    1. On your phone, dial *#801# > use EngineerMode > enable Engineer Mode Toggle (ON) and connect your device to your Desktop via USB.
    2. On your Desktop, open Device Manager. You should see two new 'other devices'. Update their drivers by: right click > Update Driver > Browse my computer [...] > Let me pick [...] > All devices > then browse for Qualcom diagnostic drivers you've downloaded & use qcmdm.inf > choose something called 'Android Modem 9018'.
    3. Open QPST. You should see devices in Active Phones and Ports list. If not: Add new port > add two devices shown in the list. Then: Start Clients > QPST EFS Explorer and select SDX55 device. This may take a few seconds.
    4. Once you see EFS Explorer go to /policyman, then copy to a separate folder following files as a backup: carrier_policy.xml, carrier_policy.xml_Subscription01.
    5. Delete those 2 files from the EFS Explorer. Find my corresponding configs and copy them over to the /policyman.
    6. On your phone, disable Engineer Mode Toggle, disconnect from your PC and reboot.
    7. Once booted, dial *#*#4636#*#* > Phone Information > Set preferred network type to NR/LTE/TDSCDMA/GSM/WCDMA. Now you should have 5G NSA enabled.
    * To enable (force) 5G SA, you have to use Network Signal Guru app to change NR5G Mode from NSA to NSA/SA or SA. But this will require root access.

    You can make sure everything is working correctly by using CellMapper app and checking 5G Status. RESTRICTED means your plan doesn't allow you to use 5G, NOT_RESTRICTED means you are too far from the cell, try to move closer, CONNECTED means everything is working perfectly. However, this method isn't ideal - every software update or SIM card change you will loose all modifications.


    Instruction #2 - enable DSS:

    Dynamic spectrum sharing (DSS) provides a very useful migration path from LTE to NR by allowing LTE and NR to share the same carrier.
    1. Follow 1st and 3rd step from Instruction #1.
    2. Once you see EFS Explorer go to /policyman and copy lte_feature_restrictions.xml file to your computer - we're going to edit it, so make a backup somewhere.
    3. Open the file with a text editor of your choice.
    You should see a section like this:
    XML:
    <plmn_list name="dss_plmns" ns="global">
          228-01 505-01 505-11 505-39 505-71 505-72 204-04 262-01 262-06 204-16 204-20 232-03 232-07 204-04 311-480 240-02 238-06 240-01 206-01 204-08 204-12 204-18 204-69 238-01 238-10
    </plmn_list>
    These are the networks allowed to use DSS. Now you should go to MCC-MNC and find a proper mcc-mnc
    codes for your network. Add them to the file as shown above.

    Now you should find section looking like this:

    XML:
    <lte_feature name="NR_DSS">
        <all_of>
          <boolean_test name="carrier:dss_is_enabled" />
          <serving_plmn_in list="dss_plmns" />
        </all_of>
    </lte_feature>
    And change it to this:
    XML:
    <lte_feature name="NR_DSS">
        <any_of>
          <boolean_test name="carrier:dss_is_enabled" />
          <serving_plmn_in list="dss_plmns" />
        </any_of>
    </lte_feature>

    All you have to do now is to save the file, copy it over to the /policyman in the EFS Explorer and copy step 6. and 7. from Instruction #1. And that's it!

    Remember: OP8T from different regions with support of the same 5G bands would sometimes not work in the NSA mode in your carrier network because of different ENDC combos and different LTE anchors. Check if your device would support your carrier network at cacombos.com.

    More on how to properly edit carrier plicy files at MT-TECH Blog. Guide tested on KB2003: Play/P4, KB2007: T-Mobile and KB2005: Verizon.

    Special thanks to:

    • Mr. Minh Truong
    • Mr. Abdullah Alshehri
    • Evenshop Themobilestore
    2
    Could you please tell us how you managed to use QPST with LineageOS? I tried to install the EngineerMode apk but it doesn't work and I also can't install those special drivers needed for QPST. Windows always gives me an error message that the driver files are not compatible. Is there a way to access those settings without having to revert back to OOS for its Engineer Mode ?
    Quick response, I might write a proper post with more detailled steps but I don't have the time to do so at the moment.

    I assume you already have Qualcomm drivers at hand, QPST installed in your computer, ADB ready and debugging option enabled in your phone. So I followed these steps (the problem of not being able to use Engineer Mode apk is solved with steps 1 to 3, but don't forget to apply step 6 when you finish):

    1. adb reboot ftm
    2. adb shell
    3. setprop sys.usb.config diag,diag_mdm,adb
    4. Go to Control Panel – Device Manager .. you will see two unknown device.
    Right click on the first one – Update Driver – browse my computer drivers - Let me pick form a list of available drivers- click on Have Disk ..- show all devices browse then go to the Qualcomm Drivers that you download earlier. Then do the same to the other unknown Driver. Choose 9018 for both unknown drivers.
    5. Change carrier_policy XML files with QPST
    6. adb reboot
    2
    Quick response, I might write a proper post with more detailled steps but I don't have the time to do so at the moment.

    I assume you already have Qualcomm drivers at hand, QPST installed in your computer, ADB ready and debugging option enabled in your phone. So I followed these steps (the problem of not being able to use Engineer Mode apk is solved with steps 1 to 3, but don't forget to apply step 6 when you finish):

    1. adb reboot ftm
    2. adb shell
    3. setprop sys.usb.config diag,diag_mdm,adb
    4. Go to Control Panel – Device Manager .. you will see two unknown device.
    Right click on the first one – Update Driver – browse my computer drivers - Let me pick form a list of available drivers- click on Have Disk ..- show all devices browse then go to the Qualcomm Drivers that you download earlier. Then do the same to the other unknown Driver. Choose 9018 for both unknown drivers.
    5. Change carrier_policy XML files with QPST
    6. adb reboot

    Just found out that using setprop sys.usb.config diag,adb without rebooting into ftm mode is already sufficient. From there on the steps are the same as already mentioned and everything worked.

    Thank you very much !
    2
    I can confirm that this guide worked on Verizon in the U.S, at least on the n5 band. However, 5G speeds are still slower for me than 4G. While it may prove more useful in the future, I don't think 5G is mature enough to replace 4G just yet.
    2
    Fixed my issue. Had a debloater module for Oneplus enabled in magisk, disabled it and worked.

    I attached the config for Verizon cause it's way different than the ones that OP uploaded and it was a ***** to track down the info on how to configure it properly for Verizon.