[Help][Guide][Philippines]SM-N9860 TGY/BRI/CHC Snapdragon Users|5G Reception Fix|Updated Guide for OneUI4.0

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cyberlion17

Senior Member
Apr 17, 2012
253
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Also updated just now to android 12. The previous tip to access service mode on phone app by google is not working anymore. Is there a workaround for this to enable 5g and 4g+? Thank you!
 

tribalfs

Senior Member
Mar 28, 2014
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Also updated just now to android 12. The previous tip to access service mode on phone app by google is not working anymore. Is there a workaround for this to enable 5g and 4g+? Thank you!

For 4G+, use QPST and delete prune_ca_combos and prune_ca_combos_Subscription01 files in nv > item_files > modem > lte > rrc > cap in your phone's EFS directory. These 2 files limits the 4G CA that our device can do. Did it and it vastly improved my 4G+ reception; more consistent than before.

More guides here like enabling 5G CA and VoNR.

No idea yet if it's possible to remove GCF NR Whitelist or its equivalent command using QPST.
 

cyberlion17

Senior Member
Apr 17, 2012
253
62
Thank you for this! However this requires root to work. Unfortunately mine isn't. Hopefully there's still a way to enable 4G+ and 5G without root.
 

cyberlion17

Senior Member
Apr 17, 2012
253
62
Wow nice thanks! Will def wait for that guide for noobs like me! Can't wait to have at least that 4G+ again :)
 

tribalfs

Senior Member
Mar 28, 2014
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Here it is.

Windows PC required.

Preparation


1. Install samsung usb driver from here.

2. Install Qualcomm QPST tool from here.

3. On your phone's stock dialer, dial *#0808#, select RNDIS + DM + MODEM (+ ADB) and click OK. This enables your phone's diagnostic mode needed to access phone's EFS files.

4. Connect your phone to the USB port of your pc.

5. Open QPST Configuration installed on your PC. Go to Active Phone tab and check if your phone already appears. If not yet, do the ff:

- Go to Ports tab and Click on the Add new Port button at the bottom.

- You can see the list of ports. Select the one that says SAMSUNG Mobile USB Serial Port. If more than one appears, you can add them both. But It's usually the COM5 port.

- Once you select this you can see the Active Phone tab the connected phone. There should be non-zero ESN value on the correct port.

6. Go to Start Clients menu and click EFS Explorer. Select the correct port and click Ok. Wait for EFS Explorer to finish loading.

7. Once loaded, ensure that Exclusive Access is checked under Phone menu.


Removing 4G Carrier Aggregation (CA) pruning/limitation to improve 4G+detection
- In EFS Explorer, navigate to nv/ item_files/modem/lte/rrc/cap and delete prune_ca_combos and prune_ca_combos_Subscription01 files.

Info: These 2 files limits the 4G CA that our device can do. The 2nd file is for SIM2. Some of our telcos 4G CA combinations are not included in these files. Deleting them removes the limitation.


Other stuff you can do:

Remove 5G CA pruning/limitation
- In EFS Explorer, navigate to /nv/item_files/modem/nr5g/RRC/ and delete cap_prune and cap_prune_Subscription01 files.

Enabling VoNR guide here
(but I am not sure if our telco here already implemented VoNR. This is similar to VoLTE but for 5G)

Some guides and tweaks using QPST for qualcomm modems can be found in https://band.radio/

Hope we can find out how to remove GCF NR whiltelist soon.
 
Last edited:

cyberlion17

Senior Member
Apr 17, 2012
253
62
This error comes up when I do step 6. Is there a way to fix this?

EDIT: If i press no it says
"This target indicates that it does not support file subsystem 19" and
"This target indicates that it does not support file subsystem 62" and
"This phone probably does not support this file subsystem. If no files are displayed, this is likely the reason"
Then EFS does not display any file.
Screenshot 2022-01-23 202030.png
 
Last edited:

tribalfs

Senior Member
Mar 28, 2014
1,734
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This error comes up when I do step 6. Is there a way to fix this?

EDIT: If i press no it says
"This target indicates that it does not support file subsystem 19" and
"This target indicates that it does not support file subsystem 62" and
"This phone probably does not support this file subsystem. If no files are displayed, this is likely the reason"
Then EFS does not display any file.
View attachment 5516265
Can you show the port that you added and selected?
 
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cyberlion17

Senior Member
Apr 17, 2012
253
62
Nevermind! It seems like the USB samsung drivers i had was outdated. Installing them over from your link worked! You're a genius man! I have 4G+ now using globe as my primary sim! :D
viber_image_2022-01-23_20-43-56-115.jpg

EDIT: Better speeds as well!
viber_image_2022-01-23_20-52-06-073.jpg
 
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tribalfs

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Mar 28, 2014
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gr_nik81

Member
Feb 4, 2021
12
0
Samsung Galaxy Note 20 Ultra
new code Service Mode (Android 12 ONEUI 4.0) works dialer Samsung *#2683662# but is locked from Samsung.
 

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tribalfs

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Mar 28, 2014
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5G working on mine with oneui4.0. 5G is new on my location, just saw this now. And I am a bit surprise that I have it on my device. Although I changed some EFS files on my device using QPST few days agoI'll share soon.

Screenshot_20220129-044206_Speedtest.jpg Screenshot_20220129-044313_XDA Developers.jpg
 
Last edited:

Culex316

Senior Member
Apr 1, 2012
511
219
Miami, FL
Samsung Galaxy S20
Here it is.

Windows PC required.

Preparation


1. Install samsung usb driver from here.

2. Install Qualcomm QPST tool from here.

3. On your phone's stock dialer, dial *#0808#, select RNDIS + DM + MODEM (+ ADB) and click OK. This enables your phone's diagnostic mode needed to access phone's EFS files.

4. Connect your phone to the USB port of your pc.

5. Open QPST Configuration installed on your PC. Go to Active Phone tab and check if your phone already appears. If not yet, do the ff:

- Go to Ports tab and Click on the Add new Port button at the bottom.

- You can see the list of ports. Select the one that says SAMSUNG Mobile USB Serial Port. If more than one appears, you can add them both. But It's usually the COM5 port.

- Once you select this you can see the Active Phone tab the connected phone. There should be non-zero ESN value on the correct port.

6. Go to Start Clients menu and click EFS Explorer. Select the correct port and click Ok. Wait for EFS Explorer to finish loading.

7. Once loaded, ensure that Exclusive Access is checked under Phone menu.


Removing 4G Carrier Aggregation (CA) pruning/limitation to improve 4G+detection
- In EFS Explorer, navigate to nv/ item_files/modem/lte/rrc/cap and delete prune_ca_combos and prune_ca_combos_Subscription01 files.

Info: These 2 files limits the 4G CA that our device can do. The 2nd file is for SIM2. Some of our telcos 4G CA combinations are not included in these files. Deleting them removes the limitation.


Other stuff you can do:

Remove 5G CA pruning/limitation
- In EFS Explorer, navigate to /nv/item_files/modem/nr5g/RRC/ and delete cap_prune and cap_prune_Subscription01 files.

Enabling VoNR guide here
(but I am not sure if our telco here already implemented VoNR. This is similar to VoLTE but for 5G)

Some guides and tweaks using QPST for qualcomm modems can be found in https://band.radio/

Hope we can find out how to remove GCF NR whiltelist soon.

Sir, you are the REAL MVP!
Thank you very much for this guide! I have an S20+ originally from the U.S. but I am using it in Panama and even though it is unlocked, since it has the CSC from a U.S. carrier, it does not enable all of the hardware's CA combos (which includes a CA combo that is very useful for me here), so with this method I can enable that combo again once I get the Android 12 update, which I know will block me from accessing the GCF menu thank you!

Edit: I finally received the OTA update for Android 12 and just as I suspected, it reset my modem CA configuration to the default and I used your QPST method to delete the prune file and that did the trick and restored my hardware CA combos ! Thanks once again!

I think this needs to be done every time the baseband is flashed.
 
Last edited:
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jemfalor

Senior Member
/nv/item_files/modem/data/3gpp/lteps/disable_apn_matching
/nv/item_files/modem/nr5g/L2/mac/mac_cfg_validate_ctrl
/nv/item_files/modem/nr5g/L2/mac/mac_cfg_validate_ctrl_Subscription0

could the above be related to GCF? APN whitelisting??
nope, tested
 
Last edited:

tribalfs

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Mar 28, 2014
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/nv/item_files/modem/data/3gpp/lteps/disable_apn_matching
/nv/item_files/modem/nr5g/L2/mac/mac_cfg_validate_ctrl
/nv/item_files/modem/nr5g/L2/mac/mac_cfg_validate_ctrl_Subscription0

could the above be related to GCF? APN whitelisting??
nope, tested
Try to backup files under L2. And delete the entire L2 directory. There's no L2 directory on mine and 5G is working
 
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  • 1
    I recently got an eSim for my Globe postpaid and for some reason I can now get a 5G signal even if I don't have n78.

    G998U1 XAA, OUI 4.1

    View attachment 5604619
    I think you're connected to NR41 - which I believe is the more widely used 5G band by Globe specially on NSA mode.
    You can check the connected band(s) using the *#0011# code.
  • 6
    Hi! I created this thread for SM-N9860 HK/TW/CH variant users from Philippines.

    The GOAL is to make our units work with our local carriers':
    • 4G Carrier Aggregation (4G CA) (i.e. 4G+/LTE-A).
    • 5G network
    and resolve any carrier related issues that you want to address.



    First, I will share my personal experience with my unit using my Globe 5G enabled postpaid sim. My N20U 5G unit is from Hongkong with TGY (Hongkong) CSC.
    While on TGY, 4G CA and 5G on my unit were NOT working. I am only getting max 20mbps with 4G and not getting the 4G+ signal.
    Note: To check the existing CSC, go to settings > about phone > software info >service provider SW ver. You should see something like TGY/TGY,TGY/TGY.

    However, I was able to change my CSC from TGY to BRI (Taiwan's CSC) using the procedures in this thread.
    I am now on BRI and I am glad that 4G CA is now working. I am already getting 70-125mbps on speedtest with it. Check this post on how to check 4G CA.

    However, I have not tested the 5G signal yet as I am far from a 5G enabled location.
    It's noteworthy though that Taiwan telcos use 5G bands n78, n257 and LTE DSS which include that n78 5G band being used by telcos in the Philippines (source: List of 5G NR networks
    )
    I am hoping for fellows to hit this thread try this change and test if this will work on his/her network, hopefully on 5G network too.



    UPDATES/SOLUTIONS

    How to access ServiceMode menu on pre-OneUI 3.0
    1. Install Google Phone app from Play Store and set it as default dialer.
    2. Open Google Phone app and key in *#*#27663368378#*#*


    How to access ServiceMode menu on OneUI 3.0/3.1
    I just saw a method for opening the menu again for Android 11. I saw this on the US thread. :)


    Just check the code on my N9810 BRI
    This method only works on Qualcomm versions
    I use *#*#276633683782#*#* on Google phone dialer
    and it brings up a service mode screen.

    Press [5] RF Test and choose [2] PREF MODE SET
    (or other options also works )
    It will show Please use *#2263# for mode set
    Then just tap three dots on right top menu and choose back
    It will bring you back to the main menu.

    by kent800129

    I can finally go to UE settings with this.


    Enabling 5G Stand Alone mode
    Go to UE SETTING&INFO -> SETTING -> PROTOCOL -> NR5G -> NR5G SA/NSA Mode Control > SA/NSA ENABLE Exit


    Solution to make 5G work in PH (also works in some countries with compatible 5G bands)
    Try this. On UE Settings>Protocol>GCF>Remove NR Whitelisting. Then reboot. That's the first step I did.

    Unhide/Enable 5GNR bands 3 and 28
    Hi there,
    Please go to [2] UE Settings >> [2]System
    On the last page choose [1] SET LTE BAND CONFIG
    Then click on [1] SET DEFAULT LTE BAND
    Reboot your phone and check again the available NR bands.


    How to check what 5G bands are enabled
    4. Go to UE SETTING&INFO -> SETTING -> PROTOCOL -> NAS -> NETWORK CONTROL -> BAND SELECTION -> BAND SELECTION SIM * -> NR5G Band Preference -> (enabled ones are marked with asterisks)

    If not yet enabled, select each then -> GO MAIN -> APPLY BAND CONFIGURATION. Exit then reboot

    Better 4G Carrier Aggregation (4G+)
    UE Settings>System>Diversity Control Menu>LTE Diversity Control>LTE 4RX ALL Enable.

    Note: You may need to redo the above procedures after software updates.



    5G Bands Supported by the device
    Bands 1, 3, 28, 41, 78 and 79


    5G Bands in PH
    The following are the mobile 5G bands being used in the Philippines from foi.gov.ph:

    - Smart: 1, 3, 5, 8, 40, 41 and 78
    Update: According to this article in smart website, they are using NR28, NR41 and NR78 with 5G CA.

    - Globe: 1, 3, 8, 28, 40, 41
    Update: According to Globe's website, they are using NR41 and NR78
    View attachment 5327677

    -DITO: 1, 28, 34, 41, 78

    The 5GNR bands missing is in N9860 are 5, 8, 34 and 40. Theoretically, our device should work in 5G sites utilizing 5GNR bands 1, 3, 28, 41 and 78 which our device is capable of. Otherwise, 5G will not work.

    [/B]

    You can also check enabled bands using this app

    Enable DITO Internet and VoLTE to enable call and sms
    Add the following DITO's IMS APN (in addition to internet APN)

    DITO IMS APN:
    Name: IMS
    APN: ims
    MCC: 515
    MNC: 66
    APN type: ims
    APN protocol: IPv4/IPv6
    APN roaming protocol: IPv4/IPv6

    ---------------------------
    DITO INTERNET APN:
    Name: DITO Internet
    APN: internet.dito.ph

    Update: Confirmed working on TGY and BRI



    Video Guide:



    METHODS FOR ONEUI4.0

    Here it is.

    Windows PC required.

    Preparation


    1. Install samsung usb driver from here.

    2. Install Qualcomm QPST tool from here.

    3. On your phone's stock dialer, dial *#0808#, select RNDIS + DM + MODEM (+ ADB) and click OK. This enables your phone's diagnostic mode needed to access phone's EFS files.

    4. Connect your phone to the USB port of your pc.

    5. Open QPST Configuration installed on your PC. Go to Active Phone tab and check if your phone already appears. If not yet, do the ff:

    - Go to Ports tab and Click on the Add new Port button at the bottom.

    - You can see the list of ports. Select the one that says SAMSUNG Mobile USB Serial Port. If more than one appears, you can add them both. But It's usually the COM5 port.

    - Once you select this you can see the Active Phone tab the connected phone. There should be non-zero ESN value on the correct port.

    6. Go to Start Clients menu and click EFS Explorer. Select the correct port and click Ok. Wait for EFS Explorer to finish loading.

    7. Once loaded, ensure that Exclusive Access is checked under Phone menu.

    Removing 4G Carrier Aggregation (CA) pruning/limitation to improve 4G+detection
    - In EFS Explorer, navigate to nv/ item_files/modem/lte/rrc/cap and delete prune_ca_combos and prune_ca_combos_Subscription01 files.

    Info: These 2 files limits the 4G CA that our device can do. The 2nd file is for SIM2. Some of our telcos 4G CA combinations are not included in these files. Deleting them removes the limitation.

    Update: This stopped working after a certain update.
    Fix 5G Reception

    L2 are config files for layer 2 of 5G protocol stack. The other directories are a ML1 (for layer 1) and RRC (for layer 3, which contains the CA control files for 5G. ). Think of them as rules implemented by samsung. Other files that I changed using QPST are the ff for those interested (use Copy data file from PC):


    IMPORTANT: Always backup the original files that you will be replacing or deleting.
    • carrier_policy.xml and carrier_policy.xml_Subscription01 : added 5G Stand Alone bands for PH telcos. SA bands are disabled by default even if NSA/SA is selected in dev menu.

    • policies.xml : updated so that changes on the above files will not reset on sim change.

    • lte_feature_restrictions.xml : added PH telcos to the Dynamic Spectrum Share (DSS) network list

    • also deleted policyman/persistent_items to refresh the contents

    • edit: also deleted cap_prune and cap_prune_Subscription0 files inside nv/item_files/modem/nr5G/RRC (layer 3). This removes defined limitation on 5G CA.
    Don't know which worked, just sharing.

    You can check the enabled bands on your phone using this
    app
    6
    Try this. On UE Settings>Protocol>GCF>Remove NR Whitelisting. Then reboot. That's the first step I did.
    4
    xUtsumi and kent800129.....Greetings form the UK

    Huge thank you to your both. :)(y):D:p:p:cool:

    I had almost givem up with this dam phone. Although it is my wife's , no 5g had stopped me importing one for myself.

    In the UK this phone got 5g on networks Vodafone and Three but not on god dam EE which is the biggest UK network.

    I am going to link your post in the other thread!

    Thankyou Thankyou Thankyou
    It was a consolidated effort. :) Also the only necessary part on enabling 5G is the first part. I just included the next 2 parts to increase signal strength and diversity stuff. Although I don't understand what they do fully, I've researched a little and enabling them will not hurt battery life while increasing the strength of signal. Correct me if I'm wrong on this. :D
    4
    5G working on mine with oneui4.0. 5G is new on my location, just saw this now. And I am a bit surprise that I have it on my device. Although I changed some EFS files on my device using QPST few days agoI'll share soon.

    View attachment 5521715 View attachment 5521721

    What does deleting the entire L2 directory do?

    If delete L2 directory with QPST tool

    Removed NR Whitelisting in GCF?

    L2 are config files for layer 2 of 5G protocol stack. The other directories are a ML1 (for layer 1) and RRC (for layer 3, which contains the CA control files for 5G. ). Think of them as rules implemented by samsung. Other files that I changed using QPST are the ff for those interested (use Copy data file from PC):


    IMPORTANT: Always backup the original files that you will be replacing or deleting.
    • carrier_policy.xml and carrier_policy.xml_Subscription01 : added 5G Stand Alone bands for PH telcos. SA bands are disabled by default even if NSA/SA is selected in dev menu.

    • policies.xml : updated so that changes on the above files will not reset on sim change.

    • lte_feature_restrictions.xml : added PH telcos to the Dynamic Spectrum Share (DSS) network list

    • also deleted policyman/persistent_items to refresh the contents

    • edit: also deleted cap_prune and cap_prune_Subscription0 files inside nv/item_files/modem/nr5G/RRC (layer 3). This removes defined limitation on 5G CA.
    Don't know which worked, just sharing.

    You can check the enabled bands on your phone using this
    app
    3
    Hope this solution helps others on this thread. :) Thanks @kent800129 for the idea. We can finally enjoy 5G. Hahaha.
    xUtsumi and kent800129.....Greetings form the UK

    Huge thank you to you both. :)(y):D:p:p:cool:

    I had almost given up with this dam phone. Although it is my wife's , no 5g had stopped me importing one for myself.

    In the UK this phone got 5g on networks Vodafone and Three but not on god dam EE, which is the biggest UK network.

    I am going to link your post in the other thread!

    Thankyou Thankyou Thankyou