Database Info

[GUIDE] How to change PRL on AOSP roms!

Just found this out thought i'd share with the community. sorry if someone already posted this, i've never come across a method.
Yes you read right, How to change PRL on AOSP roms is very simple
Assuming you already have your MSL codes and know how to use QPST or CDMA Workshop, manually updating your PRL is very simple. No need for dual rom boot or flashing sense roms just to do this.
This simply enables Diagnostics mode which is accomplished on sense roms by ##3424#, once enabled it lets you use QPST or CDMA workshop or others.
Requirements.
If you commonly flash then you should already have these installed, if not they are easily attainable via a google search
* Your MSL number
* QPST or CDMA Workshop or other program
* HTC EVO diagnostic drivers installed
* Terminal Emulator
On AOSP
Simply pull up Terminal Emulator
type:
su
echo 1 > /sys/devices/virtual/usb_composite/diag/enable
This enables Diagnostics Mode, which enables us to use QPST
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Open QPST Configuration
Select the "Ports" tab
Click "Add New Port"
Uncheck "Show Serial and USB/QC Diagnostic ports only"
Click on your device and hit OK
Highlight your phone on the "Ports" tab
Open up the "Start Clients" menu
Click on "Service Programming"
QPST Service Programming will open up and a "Phone Selection" window will appear: Click your phone if needed, and press OK
Now select the "Roam" tab and click on "Read from Phone" button
Enter your MSL, OK
Click on the "Browse" button and select the PRL file you want on your phone
Click the "Write to Phone" button next to the "read phone" button
Wait for it to finish writing to the phone. You might (read as most likely) get an error box, click OK on it.
Once all that is done, you can reboot your phone and enjoy the changed PRL without nandroiding, nand-restoring/flashing, etc. etc.
I just want to mention that the first time I did it, I lost my Mobile Data connection (3g) and after a reboot it was stuck on 1x. After another reboot, it was back to normal. But I believe that it was because I tried a verizon PRL that drops my service to almost 0.
End results​
Here is some general PRL info:
PRL Definition - (Preferred Roaming List)
The PRL is a list of information that resides in the memory of some kinds of digital phones. It lists the radio frequencies the phone can use in various geographic areas.
The part of the list for each area is ordered by the bands the phone should try to use first. Therefore it's a kind of priority list for which towers the phone should use.
The PRL helps determine which home-network towers to use, and also which towers belonging to other networks to use in roaming situations (areas where the home network has no coverage.) When roaming, the PRL may instruct the phone to use the network with the best roaming rate for the carrier, rather than the one with the strongest signal at the moment.
Since a PRL tells the phone "where" to search for a signal, as carrier networks change over time, an updated PRL may be required for a phone to "see" all of the coverage that it should, both with the home network and for roaming.
PRL Changelog
http://www.batonrougebroadband.info/
Thanks to original threads
http://forum.xda-developers.com/showthread.php?t=1162091
http://forum.xda-developers.com/showthread.php?t=1029900

Bumping this back so others can use it. This is great info and needs to be in a sticky.
Sent from my PC36100 using xda app-developers app

Now how can this be done on devices of those whom's micro USB port is broken?

Only thing you can do is replace your port or use a sense ROM to change your prl
Sent from my PC36100 using xda app-developers app

Will this work on Att galaxy note 2. Been trying to get Lte only mode on Aosp for a while now?
Sent from my SAMSUNG-SGH-I317 using xda premium

ch_ee_ko said:
Just found this out thought i'd share with the community. sorry if someone already posted this, i've never come across a method.
Yes you read right, How to change PRL on AOSP roms is very simple
Assuming you already have your MSL codes and know how to use QPST or CDMA Workshop, manually updating your PRL is very simple. No need for dual rom boot or flashing sense roms just to do this.
This simply enables Diagnostics mode which is accomplished on sense roms by ##3424#, once enabled it lets you use QPST or CDMA workshop or others.
Requirements.
If you commonly flash then you should already have these installed, if not they are easily attainable via a google search
* Your MSL number
* QPST or CDMA Workshop or other program
* HTC EVO diagnostic drivers installed
* Terminal Emulator
On AOSP
Simply pull up Terminal Emulator
type:
su
echo 1 > /sys/devices/virtual/usb_composite/diag/enable
This enables Diagnostics Mode, which enables us to use QPST
Open QPST Configuration
Select the "Ports" tab
Click "Add New Port"
Uncheck "Show Serial and USB/QC Diagnostic ports only"
Click on your device and hit OK
Highlight your phone on the "Ports" tab
Open up the "Start Clients" menu
Click on "Service Programming"
QPST Service Programming will open up and a "Phone Selection" window will appear: Click your phone if needed, and press OK
Now select the "Roam" tab and click on "Read from Phone" button
Enter your MSL, OK
Click on the "Browse" button and select the PRL file you want on your phone
Click the "Write to Phone" button next to the "read phone" button
Wait for it to finish writing to the phone. You might (read as most likely) get an error box, click OK on it.
Once all that is done, you can reboot your phone and enjoy the changed PRL without nandroiding, nand-restoring/flashing, etc. etc.
I just want to mention that the first time I did it, I lost my Mobile Data connection (3g) and after a reboot it was stuck on 1x. After another reboot, it was back to normal. But I believe that it was because I tried a verizon PRL that drops my service to almost 0.
End results​
Here is some general PRL info:
PRL Definition - (Preferred Roaming List)
The PRL is a list of information that resides in the memory of some kinds of digital phones. It lists the radio frequencies the phone can use in various geographic areas.
The part of the list for each area is ordered by the bands the phone should try to use first. Therefore it's a kind of priority list for which towers the phone should use.
The PRL helps determine which home-network towers to use, and also which towers belonging to other networks to use in roaming situations (areas where the home network has no coverage.) When roaming, the PRL may instruct the phone to use the network with the best roaming rate for the carrier, rather than the one with the strongest signal at the moment.
Since a PRL tells the phone "where" to search for a signal, as carrier networks change over time, an updated PRL may be required for a phone to "see" all of the coverage that it should, both with the home network and for roaming.
PRL Changelog
http://www.batonrougebroadband.info/
Thanks to original threads
http://forum.xda-developers.com/showthread.php?t=1162091
http://forum.xda-developers.com/showthread.php?t=1029900
Click to expand...
Click to collapse
Will this method work for other devices like GS3? Does the device carrier matters?

How to Enable/Use LTE Band 4(1700/2100) To Use on GSM carriers 4G LTE With Calls!

Hi, first sorry for my bad english and this is my first tutorial
soo! lets start!
recently purshase a samsung s5 from verizon and i see the specs the lte bands are compatible with my network here in mexico(telcel)
soo i put the sim in the phone and he only takes 3G and H+, i go to options to change network mode and.... the problem is there no option for GSM/WCDMA/LTE, only Global, LTE/CDMA and GSM/WCDMA and for that reason dont use the band 4(1700/2100) to use 4g
i loocking for tutorials and no luck, i try the Phone Info menu(*#*#4636*#*#) and menu not pop up like other phone i have, thats why i make this tutorial to have 4g data for gsm networks and the most important you can make phone calls without change to GSM/UMTS or something like that
FIRST OF ALL I'M NOT RESPONSIBLE IF YOU BROKE YOUR PHONE FOR NO FOLLOW THE GUIDE
i have rooted with rick's rom v20 nk2 firmware i dont know if this work on other rom, soo let us know if this work in other rom or fimware BUT YOU NEED ROOT
if you have enable already the hidden menu then you can skip to step 2 if not follow step 1 to enable
1.you need to enable hidden menu: this can be done be modifyng in text editor with a program like root explorer, the file from this directory -----> /efs/carrier/HiddenMenu file
like i said with a text editor open that file and change OFF to ON and save, reboot the phone
2.when the phone fully reboot, open the phone app and dial this --->*#27663368378#
with that you enter in the servicemode
3.in service mode Select: [2]UE SETTINGS & INFO, then [1]SETTING, then select [2]SYSTEM, then [9]NEXT PAGE and then select [7]LTE BAND ON/OFF, then [2]LTE B4 ON/OFF, and finally [1]B4 Enable, need be selected like the image below:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
then restart your phone
4.now its fully reboot open the phone app and dial again ---->*#27663368378#
enter in servicemode again and select [2]UE SETTINGS & INFO, then [1]SETTING, then [1]PROTOCOL, then [2]NAS, then [1]NETWORK CONTROL, then [5]PREF MODE SET, and finally [7]GSM_WCDMA_LTE_ONLY and wait for the magic
when yor restart your phone says no service and pop up the menu dont service and tells you to change to global mode please cancel and wait for reception! if you change to global or other mode you need to do again the step 4 to put again in GSM/WCDMA/LTE ONLY
THATS ALL!:good:
NOTE: I WAS PLAYING IN THE LAST STEP BEFORE [5]PREF MODE SET IN THE [1]NETWORK CONTROL MENU, I CHOOSE [4]BAND SELECTION INSTEAD OF [5]PREF MODE SET, SOO IF THE STEPS DONT WORK LET ME KNOW TO ADD SOME EXTRA STEPS IF NEEDED

This enabled 1700/2100 (AWS) for LTE only correct? Just curious if it would work for enabled WCDMA for 1700/2100 on HSPDA+ for 4G also?

GrandMstrBud said:
This enabled 1700/2100 (AWS) for LTE only correct? Just curious if it would work for enabled WCDMA for 1700/2100 on HSPDA+ for 4G also?
Click to expand...
Click to collapse
its not only 1700/2100 LTE, when you make a call the phone automatically change to 3g umts
thats why call GSM/WCDMA/LTE
with this you can use verizon samsung s5 like others gsm phone 4g

*#27663368378# doesn't take me to the Menu? Is there another way?

How do you set it back the way it was? Or how do I turn off the GSM stuff. All I care about is better Verizon signal.
Once I did this, my signal has been bouncing back and forth from full bars down to 3. Any idea why?

Any help in order to add the lte band 4 to my S5 duos sm-g900fd , I need because I use T-Mobile while I am in US.
Thanks

When I make these changes it still drops me to 3G on calls. Not sure what the deal is really. Was hoping for 4g/calls at the same time.

enkryptik said:
When I make these changes it still drops me to 3G on calls. Not sure what the deal is really. Was hoping for 4g/calls at the same time.
Click to expand...
Click to collapse
Try switching from sim use to nv use. It's in the service menu under rtre config.
The phone supports LTE Bands 2,3,4,5,7,13,17 and 20. I'll post back

Tried and so far, nothing stops my phone from dropping to 3g when making a call. Also, some of these changes cause speedtest.net app to think I'm about 5 states away from where I actually am. Switching back, it puts closest server back to Indiana.....

I am using T-Mobile on this phone so not having to have my phone drop data to make phone calls would be great. I wasn't able to get this to work, but would be interested in knowing if others on T-Mobile can get this to work.
Thanks

andyandmarlys said:
I am using T-Mobile on this phone so not having to have my phone drop data to make phone calls would be great. I wasn't able to get this to work, but would be interested in knowing if others on T-Mobile can get this to work.
Thanks
Click to expand...
Click to collapse
So far, I haven't found anyone able to successfully change this on a Verizon phone because it has a locked bootloader. Hopefully, one day soon.

ALUCARD4DEAD said:
3.in service mode Select: [2]UE SETTINGS & INFO, then [1]SETTING, then select [2]SYSTEM, then [9]NEXT PAGE and then select [7]LTE BAND ON/OFF, then [2]LTE B4 ON/OFF, and finally [1]B4 Enable, need be selected like the image below:
View attachment 3092264
Click to expand...
Click to collapse
Hi. In the final step on step #3, it says "finally [1] B4 Enable"...but the screen shot attached shows [2] B4 Disable. Which one should we follow? Should we enable it or disable it?
Thanks.

AlpineMan said:
Hi. In the final step on step #3, it says "finally [1] B4 Enable"...but the screen shot attached shows [2] B4 Disable. Which one should we follow? Should we enable it or disable it?
Thanks.
Click to expand...
Click to collapse
enable my friend
the screen shot its only for reference

thepinkpanter said:
Any help in order to add the lte band 4 to my S5 duos sm-g900fd , I need because I use T-Mobile while I am in US.
Thanks
Click to expand...
Click to collapse
you need to check the bands, if there are compatible with the band of tmobile the process will be similar but depend of the bands and the baseband
andyandmarlys said:
I am using T-Mobile on this phone so not having to have my phone drop data to make phone calls would be great. I wasn't able to get this to work, but would be interested in knowing if others on T-Mobile can get this to work.
Thanks
Click to expand...
Click to collapse
i dont know because i dont use tmobile, but if the bands are compatible.....then sould be work

i tried this with Verizon branded s5 on T-Mobile and it did not work. It wouldn't even show up as LTE. Straight dropped to H+.
Is doing this the same thing as what 5.0 does in the mobile network settings? I upgraded to 5.0 previously and it switched one of the settings to GSM/UMTS/LTE which it was previously GSM/UMTS.

Does anyone know if running a custom ROM will resolve this issue?

Does anyone know if it's possible to enable Verizon voice cdma band on a gsm/LTE (t-mobile) model s5 ? Or is the hardware in the sprint/Verizon models truly custom?

I tried this on my g900v S5 running Ricks Rom. Step one change off to on resulted in soft bricking with reboot having a toast pop up saying systemui has stopped. Touch ok and it goes to the home screen then same pop up loops back to lock screen over and over.
How to fix?
In recovery-advanced-file manager, when selecting the efs file, nothing is in it to edit and it only shows "up one file" or something like that.
What should be checked under "mount"? There are checkboxes for Micro SDCard, Internal Storage, Data, Cache and system.
Thanks

DroidinAndStuff said:
I tried this on my g900v S5 running Ricks Rom. Step one change off to on resulted in soft bricking with reboot having a toast pop up saying systemui has stopped. Touch ok and it goes to the home screen then same pop up loops back to lock screen over and over.
How to fix?
In recovery-advanced-file manager, when selecting the efs file, nothing is in it to edit and it only shows "up one file" or something like that.
What should be checked under "mount"? There are checkboxes for Micro SDCard, Internal Storage, Data, Cache and system.
Thanks
Click to expand...
Click to collapse
In your file browser, check the settings to include hidden files and folders.

Rapunzl said:
In your file browser, check the settings to include hidden files and folders.
Click to expand...
Click to collapse
no such settings exist in safestrap and there is no getting in any other way
I'll gladly stand corrected if I am wrong about safestrap settings

LG G Pro 2 F350L no 4G D838 rom?

I Just flashed my F350L to D838 rom to get a clean experience from all the Korean apps and everything is perfect but no 4g LTE option . The dialer codes do work but its annoying doing that every reboot.

If your device is rooted then install Build Prop Editor from Google Play Store https://play.google.com/store/apps/...editor&pcampaignid=APPU_1_6N8ZVrkTx5FolN-TiAM.
Open it and in the search field type telephony so it will find a line called ro.telephony.default_network. Open that setting and instead of default value (I suppose it's number 8) you can put 10 or 12. Save that change and than reboot your device. You will now have LTE in your network settings. I hope it will work for you...
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
This is what I get now in my phone after changing that setting:
Sent from my LG-D838

I cant seem to root it . Im on 5.0.1

ubabic said:
If your device is rooted then install Build Prop Editor from Google Play Store https://play.google.com/store/apps/...editor&pcampaignid=APPU_1_6N8ZVrkTx5FolN-TiAM.
Open it and in the search field type telephony so it will find a line called ro.telephony.default_network. Open that setting and instead of default value (I suppose it's number 8) you can put 10 or 12. Save that change and than reboot your device. You will now have LTE in your network settings. I hope it will work for you...
This is what I get now in my phone after changing that setting:
Sent from my LG-D838
Click to expand...
Click to collapse
Its not staying its switching from auto to gsm I need it to stay on auto

Go to mobile network settings and set GSM/WCDMA/LTE auto and then activate mobile data option. Exit and don't enter the settings again because if you enter it will change this option to GSM/WCDMA preferred for some unknown reason. 4G is working and you can easily disable and enable mobile data now from notification drawer. But don't enter the settings! I know that this is not permanent solution for this problem. It's anoying to me too. But it's little bit better than typing those dialer codes every time...
Sent from my LG-D838

nicklite97 said:
I Just flashed my F350L to D838 rom to get a clean experience from all the Korean apps and everything is perfect but no 4g LTE option . The dialer codes do work but its annoying doing that every reboot.
Click to expand...
Click to collapse
how to flashed D838 into F350L ?

No 3G/LTE signal. only G..Urgent help please
ubabic said:
Go to mobile network settings and set GSM/WCDMA/LTE auto and then activate mobile data option. Exit and don't enter the settings again because if you enter it will change this option to GSM/WCDMA preferred for some unknown reason. 4G is working and you can easily disable and enable mobile data now from notification drawer. But don't enter the settings! I know that this is not permanent solution for this problem. It's anoying to me too. But it's little bit better than typing those dialer codes every time...
Sent from my LG-D838
Click to expand...
Click to collapse
Hello AndroidBrick, stumbled onto your site while looking for solution. I am Nigerian and I use an LG G Pro (D838, 32GB). Some days back i noticed that i had no network on my phone so I tried inserting another sim into the device and still got the same result but other devices around had network coverage. I changed the network mode to GSM only and got 2G but WCDMA only gives me nothing. I have tried other sims on GSM only mode and got 2G but when i change the mode to WCDMA only, i get nothing at all. Have also put it to GSM/WCDMA auto but keeps giving me just 2G network only. I have even had to downgrade the OS from android 5.0.1 to 4.4.2 as suggested by a friend and still got the same issue(NB: this happened after I received a notification form LG to download an upgrade of about 54MB). Decided to manage it that way as I went on looking for solutions to that problem but with no luck and then the bluetooth and wifi stopped connecting. Please, what should i do? Any other information you would need from me, please I will do all I can to provide to you. Thank you in advance.
---------- Post added at 09:18 AM ---------- Previous post was at 09:10 AM ----------
ubabic said:
Go to mobile network settings and set GSM/WCDMA/LTE auto and then activate mobile data option. Exit and don't enter the settings again because if you enter it will change this option to GSM/WCDMA preferred for some unknown reason. 4G is working and you can easily disable and enable mobile data now from notification drawer. But don't enter the settings! I know that this is not permanent solution for this problem. It's anoying to me too. But it's little bit better than typing those dialer codes every time...
Sent from my LG-D838
Click to expand...
Click to collapse
Hello, I am Nigerian and I use an LG G Pro (D838, 32GB). Some days back i noticed that i had no network on my phone so I tried inserting another sim into the device and still got the same result but other devices around had network coverage. I changed the network mode to GSM only and got 2G but WCDMA only gives me nothing. I have tried other sims on GSM only mode and got 2G but when i change the mode to WCDMA only, i get nothing at all. Have also put it to GSM/WCDMA auto but keeps giving me just 2G network only. I have even had to downgrade the OS from android 5.0.1 to 4.4.2 as suggested by a friend and still got the same issue(NB: this happened after I received a notification form LG to download an upgrade of about 54MB). Decided to manage it that way as I went on looking for solutions to that problem but with no luck and then the bluetooth and wifi stopped connecting. I have checked for solutions to my problem and and all seem to point out that I need my phone's qcn backup file, of which I have not had any luck with. Can you help me out on this one.....Please? You can send me information to [email protected]. Thank you

My F350L and D838 have strong LTE signal but when I tried opening a web site, it does not open and get the message "You are not connected to the internet."
What seems to be the problem and how can I resolve that issue?
TIA

Forcefully enable "5G Only Mode"

Hi,
I'm looking to enable "5G Only" mode (packet switching to be more specific) on my Note 20 Ultra. I have tried all the apps available out there but the closest I've come is that I have enabled LTE Only mode (which works perfectly as it should btw). Most apps say that they can enable "5G only" mode but there are no options to do so in the menu.
Calling out all experts for their kind recommendations. My device model is SM-N986B/DS
PS. I'm looking for a way to do this without rooting my phone.
Best Regards.

You can by launching the hidden phone activity. For that you can you can download Activity Launcher, and search for "hidden", then open the phone settings one.
You'll the be able to use the select band only mode, and select all 5G NR only.
Il do it for 4G and 5G for when it'll come, and works flawlessly (it never goes back to 3/2G).

Nastrahl said:
You can by launching the hidden phone activity. For that you can you can download Activity Launcher, and search for "hidden", then open the phone settings one.
You'll the be able to use the select band only mode, and select all 5G NR only.
Il do it for 4G and 5G for when it'll come, and works flawlessly (it never goes back to 3/2G).
Click to expand...
Click to collapse
Hi, thank you so much for your reply. The thing is that I tried that and I couldn't see 5G NR Only option. And if I select "Band Selection Mode", then it displays the message "Fail". Screenshots attached for reference. Can you please guide me further?

mani.1 said:
Hi, thank you so much for your reply. The thing is that I tried that and I couldn't see 5G NR Only option. And if I select "Band Selection Mode", then it displays the message "Fail". Screenshots attached for reference. Can you please guide me further?
Click to expand...
Click to collapse
You're welcome.
Sure!
You have to go to the hamburger menu then "Band Selection".
Here you select all the bands you want, then you turn the button on the upper right on. It will automatically select the bands selection mode afterwards.

Oops I screwed up with the screenshots
Here they are.

It "normal" that after the band selection mode activated, that the bands you selected doesn't show anymore.
But then in the network band mode, the band selection setting is now applied and working.

@Nastrahl
Thank you so much man. Okay one more clarity I need, lets suppose I choose the NR B77 Band in the band selection, then:
1. Do all the other technologies (i.e. 2G/3G/LTE) gets disabled and the "network connectivity mode" gets automatically set to "5G Only" ?
2. Will this mimic the same scenario when I choose "LTE only" mode in which the phone basically shifts to packet switching mode instead of the the regular circuit switching mode. (i.e. only mobile data is enabled, you can't receive or make calls in this mode)
Cheers!

mani.1 said:
@Nastrahl
Thank you so much man. Okay one more clarity I need, lets suppose I choose the NR B77 Band in the band selection, then:
1. Do all the other technologies (i.e. 2G/3G/LTE) gets disabled and the "network connectivity mode" gets automatically set to "5G Only" ?
2. Will this mimic the same scenario when I choose "LTE only" mode in which the phone basically shifts to packet switching mode instead of the the regular circuit switching mode. (i.e. only mobile data is enabled, you can't receive or make calls in this mode)
Cheers!
Click to expand...
Click to collapse
Hi, no problem.
1. Yes in that case all except the technology (5G in that case) you chose and the band you selected is disabled. So it's the same as if you would have set the phone to "5G only" if that explicit mode was available.
I personally set it by selecting all LTE and 5G bands, to mimic a "only LTE and 5G" mode.
2. It depends if your provider supports voice over LTE to make calls without rendering back to 3G or 2G network.
In my case, I can use LTE for both so I didn't care about 3G/2G, that why I set bands selection to only LTE and 5G bands (the latter when it will be available in my country)
But some providers doesn't supports calling with LTE and needs to switch back to the older 3G or 2G to be able to. Unfortunately if you lock bands to LTE, calling won't work at all (only data), and about 5G it may also depend if they support it.
If they do it will work with bands selection mode, otherwise no.
Have a good day!

Nastrahl said:
Hi, no problem.
1. Yes in that case all except the technology (5G in that case) you chose and the band you selected is disabled. So it's the same as if you would have set the phone to "5G only" if that explicit mode was available.
I personally set it by selecting all LTE and 5G bands, to mimic a "only LTE and 5G" mode.
2. It depends if your provider supports voice over LTE to make calls without rendering back to 3G or 2G network.
In my case, I can use LTE for both so I didn't care about 3G/2G, that why I set bands selection to only LTE and 5G bands (the latter when it will be available in my country)
But some providers doesn't supports calling with LTE and needs to switch back to the older 3G or 2G to be able to. Unfortunately if you lock bands to LTE, calling won't work at all (only data), and about 5G it may also depend if they support it.
If they do it will work with bands selection mode, otherwise no.
Have a good day!
Click to expand...
Click to collapse
Worked like a charm. Thank you for all the help and the detailed explanation. @Nastrahl .

mani.1 said:
Worked like a charm. Thank you for all the help and the detailed explanation. @Nastrahl .
Click to expand...
Click to collapse
You're welcome. I'm glad it helped

I look for that app activity launcher and there's a few.... can you direct me to it....

edwardob said:
I look for that app activity launcher and there's a few.... can you direct me to it....
Click to expand...
Click to collapse
You have to search for "hidden". And you will get two options.

edwardob said:
I look for that app activity launcher and there's a few.... can you direct me to it....
Click to expand...
Click to collapse
It's this one : https://play.google.com/store/apps/details?id=de.szalkowski.activitylauncher

Nastrahl said:
You can by launching the hidden phone activity. For that you can you can download Activity Launcher, and search for "hidden", then open the phone settings one.
You'll the be able to use the select band only mode, and select all 5G NR only.
Il do it for 4G and 5G for when it'll come, and works flawlessly (it never goes back to 3/2G).
Click to expand...
Click to collapse
Hello i tried to download activity launcher and search for the word "hidden" but no result.
I am using huawei P40 PRO. no gms
is it possible to force 5g on my phone? i hope it can thank you

jcdc0504 said:
Hello i tried to download activity launcher and search for the word "hidden" but no result.
I am using huawei P40 PRO. no gms
is it possible to force 5g on my phone? i hope it can thank you
Click to expand...
Click to collapse
I don't own an Huawei phone so it may have a different name, or it may not exist on that model at all...
Unfortunately it could be a Samsung only feature.

Nastrahl said:
I don't own an Huawei phone so it may have a different name, or it may not exist on that model at all...
Unfortunately it could be a Samsung only feature.
Click to expand...
Click to collapse
thank you for informing me.

I
Nastrahl said:
You can by launching the hidden phone activity. For that you can you can download Activity Launcher, and search for "hidden", then open the phone settings one.
You'll the be able to use the select band only mode, and select all 5G NR only.
Il do it for 4G and 5G for when it'll come, and works flawlessly (it never goes back to 3/2G).
Click to expand...
Click to collapse
I was able to launch the hidden after rooting my phone, please is there any way to lunch without root?
After selecting all NR I don't get 5G, I get (no service) meanwhile I am in the 5G area and I use to get 5G for some time like the attached picture.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Any solution please?

mustaph12 said:
I
I was able to launch the hidden after rooting my phone, please is there any way to lunch without root?
After selecting all NR I don't get 5G, I get (no service) meanwhile I am in the 5G area and I use to get 5G for some time like the attached picture.
View attachment 5724537
Any solution please?
Click to expand...
Click to collapse
Unfortunately not anymore as far as I know

Nastrahl said:
Unfortunately not anymore as far as I know
Click to expand...
Click to collapse
Thank you

Nastrahl said:
You can by launching the hidden phone activity. For that you can you can download Activity Launcher, and search for "hidden", then open the phone settings one.
You'll the be able to use the select band only mode, and select all 5G NR only.
Il do it for 4G and 5G for when it'll come, and works flawlessly (it never goes back to 3/2G).
Click to expand...
Click to collapse
Hey, can u help me also?
I am trying to use 5g only on my note 20 ultra, but it keeps switching to 4g after a few minutes.
I downloaded the activity launcher and the contents are shown in the screenshot, when i try to open the call settings it shows an error and doesn't do anything.
I am currently on one ui 5.1 android 13
Thankyou

Guide:-How To Activate VoLTE,ViLTE,VoWIFI&ViWIFI LG Devices-LG Velvet 5G

Hi Guys Am Baljeet From India There Is A Path To Force Enable VoLTE On The"LG Velvet 5G LM-G900" Specifically Your Version Which Is The "LM-G900".
By Default This Feature Is Disabled On This Model.
Follow These Steps Given Below:
A). Go To The Phone App(Dailer) And Dial "*#*#4636#*#*"-It'll Automatically Bring You To The"Testing" Settings Menu.
B). Go To "Phone Information"-You See A List Of VoLTE Settings However By Default They Are Disabled And Greyed Out But Don't Worry There's A Path To Enable VoLTE.(You Will Come Back To This Menu Later)
C). Go To Your LG Smartphones's File App(File Manager) And Create a Folder Named "enable_ue"-Thats All You Need To Do Just Create The Folder, Nothing More Nothing Less.
D). Go Back To The LG Smartphone's Phone App(Dailer) And Dial "#*462633*#900#" -This Code Is Specific To The Variant And May Be Work Or Not On Other Non LM-G900 Phones. Dialing This Should Bring Up The "Hidden LG Menu"
E). Select Field Test>Universal Enabler>Create New Config-A Menu With Check Boxes For VoLTE Options Appearing
F). Select The Boxes As Follows "VoLTE" "ViLTE" "VoWifi" "ViWifi" And Finally Hit "Confirm" -A Prompt Will Appear Stating "Vo Services Updated"
G). Immediately Restart Your Smartphone To Allow The Settings To Kick In.
H). After Your Smartphone Has Restarted Go Into Your Settings>Network & Internet>Mobile Networks -If Done Correctly The VoLTE Option Will Now Be Unlocked And Available.
I). Switch On The "VoLTE"
J). Now To Double Check That Your Smartphone Now Truly Has VoLTE Enabled,Repeat Steps A&B.If Done Correctly The Menu Should Now Say "VoLTE Provisioned Video Calling Provisioned Wifi Calling Provisioned " -If These 3 Are All Switched On Then You Have Successfully Force Enabled VoLTE On Your LG Velvet 5G LM-G900, Congratulations!
Warning:-I am not responsible for any damage you made to your device You have been warned.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}

Thanks a lot. A little feedback. I tried it with the 4G EU version of the phone as my current carrier deactivated VoWifi. It works with using the call code #*462633*#910# in step D.
Awesome guide. Thanks again

Baljeet Khairwal said:
Hi Guys Am Baljeet From India There Is A Path To Force Enable VoLTE On The"LG Velvet 5G LM-G900N" Specifically Your Version Which Is The "LM-G900N".
By Default This Feature Is Disabled On This Model.
Follow These Steps Given Below:
A). Go To The Phone App(Dailer) And Dial "*#*#4636#*#*"-It'll Automatically Bring You To The"Testing" Settings Menu.
B). Go To "Phone Information"-You See A List Of VoLTE Settings However By Default They Are Disabled And Greyed Out But Don't Worry There's A Path To Enable VoLTE.(You Will Come Back To This Menu Later)
C). Go To Your LG Smartphones's File App(File Manager) And Create a Folder Named "enable_ue"-Thats All You Need To Do Just Create The Folder, Nothing More Nothing Less.
D). Go Back To The LG Smartphone's Phone App(Dailer) And Dial "#*462633*#900#" -This Code Is Specific To The Variant And May Be Work Or Not On Other Non LM-G900N Phones. Dialing This Should Bring Up The "Hidden LG Menu"
E). Select Field Test>Universal Enabler>Create New Config-A Menu With Check Boxes For VoLTE Options Appearing
F). Select The Boxes As Follows "VoLTE" "ViLTE" "VoWifi" "ViWifi" And Finally Hit "Confirm" -A Prompt Will Appear Stating "Vo Services Updated"
G). Immediately Restart Your Smartphone To Allow The Settings To Kick In.
H). After Your Smartphone Has Restarted Go Into Your Settings>Network & Internet>Mobile Networks -If Done Correctly The VoLTE Option Will Now Be Unlocked And Available.
I). Switch On The "VoLTE"
J). Now To Double Check That Your Smartphone Now Truly Has VoLTE Enabled,Repeat Steps A&B.If Done Correctly The Menu Should Now Say "VoLTE Provisioned Video Calling Provisioned Wifi Calling Provisioned " -If These 3 Are All Switched On Then You Have Successfully Force Enabled VoLTE On Your LG Velvet 5G LM-G900N, Congratulations!
Warning:-I am not responsible for any damage you made to your device You have been warned.View attachment 5704625View attachment 5704627View attachment 5704629View attachment 5704631View attachment 5704633View attachment 5704635View attachment 5704637
Click to expand...
Click to collapse
Hy, code mentioned in point A does not work on my phone. Code in point D worked.but i do not have Field test option. I have attached the screenshot.please check

You can try by flashing European firmware LM-G900EM in your LM-G900N by using following method provided in the link.I am not responsible if any damage occurs.
Post in thread 'Firmware Switch' https://forum.xda-developers.com/t/firmware-switch.4307817/post-87450935

ch0c0lateb0yctg said:
Hy, code mentioned in point A does not work on my phone. Code in point D worked.but i do not have Field test option. I have attached the screenshot.please check
Click to expand...
Click to collapse
You Can try this *#546368#*900# To Get Field test.Please Tell me What happens With all screenshots.

i tried it with lg velvet 5g tmobile version LG Velvet 5G LM-G900-tm but after restart the volte option is not there in jio 4g network options, its still grey in volte provisioninig. please help.

i have followed your steps in sequence, restarted the phone. in master config its all showing green but volte provisioning is disabled and in network settings i am not seeing volte.

Sindaugh said:
Thanks a lot. A little feedback. I tried it with the 4G EU version of the phone as my current carrier deactivated VoWifi. It works with using the call code #*462633*#910# in step D.
Awesome guide. Thanks again
Click to expand...
Click to collapse
Please Share Screenshots of hidden menu of your Velvet LM-G910EMW showing Rat Selection & 5G Frequency Bands in the hidden menu.Please Share All Screenshots regarding Rat Selection&5G Frequency Bands.

First You See Volte Option or not.
abeykp said:
i have followed your steps in sequence, restarted the phone. in master config its all showing green but volte provisioning is disabled and in network settings i am not seeing volte.
Click to expand...
Click to collapse

Baljeet Khairwal said:
First You See Volte Option or not.
Click to expand...
Click to collapse
no i am not seeing volte option in settings > network >

So this worked for me, but how can I tell if it is actually making calls via VOLTE? It looks like my 4g velvet still drops to 3g for calls on T mobile?

Hi,
I have the Lg velvet G900um10h, im trying to use in europe, its bought from the US, and its at&t,.
I followed your instructions, the volte doesnt show on network, and im not able to enable it either, it says on
field test that volte is on. What should i do? ive been trying to make this phone work for a long time.

Hello bro mine is unlocked AT&T, right now mobile data is working. Unable to call.
Did all the steps as mentioned by you.
But after rebooting VoLTE not appearing.
Kindly help.
Model LM-G900UM

Thanks so much friend. With your guidance, you got VoLTE working with my carrier.

I have no field test option in my lg velvet g900n and *#*#4636#*#* code is not working.. what can i do? Someone help!

saidul7 said:
I have no field test option in my lg velvet g900n and *#*#4636#*#* code is not working.. what can i do? Someone h
Click to expand...
Click to collapse
*#*#4636#*#* //.///
Try this.

Chyt said:
*#*#4636#*#* //.///
Try this.
Click to expand...
Click to collapse
I have LF Velvet 5G Japanese version unlocked to DOCOMO. MOdel is L52-A. What code should I use to enter hidden menu?

I have LF Velvet 5G Japanese version unlocked to DOCOMO. MOdel is L52-A. What code should I use to enter hidden menu?

anujsingapore said:
I have LF Velvet 5G Japanese version unlocked to DOCOMO. MOdel is L52-A. What code should I use to enter hidden menu?
Click to expand...
Click to collapse
#*462633*#900#
theoretically...

Thanks, but the / and . Options are not available with my keypad, and the 900 option followed by # doesn't yield anything, the screen status there at the dial pad.