yashsingh1/xdaforums huggingface dataset:
[Galaxy S 5 General] botwa2000:
Yep same happened to me! I guess editing values other than 1877, 6828 and 6829 is what killed GSM for me. That's why I haven't even quoted these steps in my guide.

I guess editing the three NV values above is safe as you can change them any time.

In terms of deriving the right decimal value you should use QualComm NV Calculator app by [MENTION=2018502]vndnguyen[/MENTION] from Google Market - it proved to be accurate.

PM me your details I'll send you my EFS backup.
[Galaxy S 5 General] Hongdae:
Sent! How did you manage to fix the QPST connection? Still dropping
[Galaxy S 5 General] botwa2000:
I did a clean install of the stock firmware.

My QPST connection wasn't completely dead but dropped every few seconds or so.

I was able to open NV Manager, select all GSM bands and write to the phone within a couple of seconds. The connection dropped before the write operation was finished but I managed to get the network back.

Afterwards I got QPST connection back normally.
[Galaxy S 5 General] Hongdae:
Okay. The same happened and now connection is working fine. Just one more question, in order to edit the NV values I have opened QXDM, then NV Browser. Now I have the following values from the calculator:

NV 1877: 844, 425, 062, 777, 216

How do I input this?
[Galaxy S 5 General] botwa2000:
I'm not sure I understand how you got to these values...

For starters I suggest you check all your phone's default bands and calculate the decimal value. You should use it without commas.

In my first post in this thread I included the original guide on how to edit the NV values with QXDM.

Read the current value from 1877, what does it say?

BTW if you find any of my posts useful feel free to hit 'Thanks' button:)
[Galaxy S 5 General] Hongdae:
Yeah you are right, I am a total rookie here. If I read 1877 it it shows 0, but now I have written 422212531388608. I have selected "Use QXDM Notation" on the NV calculator, I guess that should be correct.

However, the calculator gives 192 for NV 0441 and when I write it it says: Parameter Bad. I have 0 on nam and 0xFFFF on band when I read it
[Galaxy S 5 General] botwa2000:
Looks like by now you should have your 3G connection back I hope;)

Do you also have your LTE back?

I believe only NV 6828 and 6829 are relevant for LTE.

What values do you read in those?
[Galaxy S 5 General] Hongdae:
I have nothing back, still no signal. No GSM, 3G or LTE. I can't write on NV 0441, 0946, 2954 values...
[Galaxy S 5 General] botwa2000:
Hmm. At this point I had my connection back after reboot.

As I said I haven't touched 0441, 0946 or 2954 lines.

Here is my entire NV dump shortly - you can have a look vs. your values

http://xdaforums.com/showthread.php?p=56215728

So just brainstorming now.

Did you activate all possible gsm bands in NV manager and was able to write to your phone?

Are your APN settings intakt?
[Galaxy S 5 General] Hongdae:
My APN is fine yeah.

All 0441, 0946 and 2954 show 0 when I read from phone. If I write the values from the NV calculator on QXDM it says error, parameter bad.

By NV manager do you mean QPST Service Programming / UMTS System?

This is what I have when I click on Read from phone:
[Galaxy S 5 General] Mandoza:
So you did manage to unlock bands on ur SM-G906K? Send me a message on hangouts
[Galaxy S 5 General] botwa2000:
No, I couldn't unlock the bands:(
[Galaxy S 5 General] botwa2000:
The code should start without actually pressing the dial icon - the phone enters into debug mode directly after second asterisk *#0808*
[Galaxy S 5 General] DerTFux:
No it does not... thats my problem. However I went back to the 4.4 installed the frequents I wanted to have and now running again on 5.0.1. Till now everything seems fine :D
[Galaxy S 5 General] Enki1983:
2G No options to choose ... anywhere .... enters through the dialer * # 0011 # my servise menu opens and has a situation with options and selected from there GSM900 .Greet the large group ... I hold the G906s..I am from GREECE !! here we have 4G in 1800 mhz .. 3G 2100 MHz and Gsm 900 1800 1900 MHZ ... network settings as option is only Lte or 3G only..How do I submit selecting GSM 2G of the settings?

.
[Galaxy S 5 General] botwa2000:
If your phone is rooted then you can rename system/csc/customer.xml to customer.bak and you'll get more advanced network settings in Android menu under more networks/mobile networks
[Galaxy S 5 General] vdrums:
Hello,

i am also from Greece and i also have the Samsung Galaxy s5 LTE-A G906S. And my problem besides the 2g frequency is that when i am in G then when I make a call i can not hear the other one? Also when I am during the call and pass through a place that has not LTE or 3G then i hear a lot of noise and maybe it will cut the call. I have Vodafone Greece. Do you have these problems also?
[Galaxy S 5 General] Enki1983:
No I do not have this problem with 2G !! I say to routaro the s5 to have access to all ... you have come from servise menu * # 0011 # then press eksi who is Korean letters to open the menu..i am vodafone me.Choose Gsm 900 or GSM 1800..Kai try again ... send me your email address to contact you!
[Galaxy S 5 General] lost_:
Thanks for reviewing my setting and taking the time to recalc. I was hoping that was the issue, but turns out I did enter 67807 correctly for band 12, and it was actually typo on my first post.

Following your suggestion, I set it to 2048 to limit LTE to B12 only, and verified after reboot (see attachment for NV 6828; NV 6829 is the same). Service Mode 'LTE Band Preference' shows B1, 2, 3, 4, 5, 6, 7, 8, 17 and ALL, and no B12. I selected ALL.

However, despite limiting LTE to band 12 only, I still couldn't get band 12, which T-Mobile definitely has in Washington DC. As all the other LTE bands are disabled, phone would not connect to LTE, and stays on HSPA/HSPA+ band 2 or 4. To make sure, with LTE discovery in cycle mode, I drove around town for 45 minutes, but the phone just wouldn't connect to LTE band 12. This experiment does confirm that factory LTE bands can be disabled correctly, but it fails to confirm that it can enable an LTE band that's not "native" the S5 family.

I'm starting to think that this method works only for enabling/disabling LTE bands that the entire S5 family comes with (i.e., enabled in one variant but disabled in other), but it would not enable an LTE band that the S5 family never had. Would this sound about, right?
[Galaxy S 5 General] yakapa40:
maybe you are right i don't use QXDM but only EFS and NV reader writter

i think in the original NV there is no NV6829 for your device ( i never seen NV6829 in Samsung devices)

you can take a look here: http://xdaforums.com/android/general/3g-lte-frequency-nv-items-qualcomm-t2950491

regards
[Galaxy S 5 General] lost_:
NV 6829 was indeed empty prior to my change, and I decided to stick the same value there as 6828. Should I set 6829 to 0? Not sure how I can empty it, if that's not the same as 0. Or perhaps I can do a QPST qcn restore. For some reason, EFS Pro NV restore is not sticking.

I also just realized that band 12 was not as widely available in DC area as I had thought. It would be nice if I had a device with native band 12 support, and try the S5 side-by-side. I'll try again this weekend at an exact location where band 12 has been reported.
[Galaxy S 5 General] galaxydedicated:
Does this Sim Unlock by any chance?
[Galaxy S 5 General] botwa2000:
Nope:(
[Galaxy S 5 General] galaxydedicated:
Dang it! ?
[Galaxy S 5 General] PIRATA!:
[MENTION=6021435]botwa2000[/MENTION]

I found this thread of yours only now..

Please forgive me if I'm asking this on your thread, but I think that yours is more proper.

I can buy a S5 Prime G906L and my Italian networks are quite fine as I use Three "3" Italy.

The phone works with every connection, but the only thing is that I might need the band 10 of 900Mhz on 3G as it's more strong here.

Is there any way of activating it on this phone?

Thank you.
[Galaxy S 5 General] botwa2000:
The field on Lollipop is untested.

I can't tell you re: 3G bands unlock as I haven't seen anyone reported success so the answer is most probably 'no' I'm afraid.

Easiest is to buy a phone what supports the bands you need out of the box.
[Galaxy S 5 General] baophucdinh31:
does anyone success unlock LTE band on G900F??? and if you success add LTE band on your phone, can you me some help? :(
[Galaxy S 5 General] PIRATA!:
I have seen this reply only now.

So no one reporting ANY unlocking of ANY bands on ANY S5 devices?

Or only on these S5 Prime devices?

I mean..I have read that someone have unlocked some bands on regular 900 and an LTE band on a 906L.

HERE IS THE POST MENTIONING ALL THEM: http://xdaforums.com/showthread.php?p=55635566

How can you be so sure about it?

Please let me know.
[Galaxy S 5 General] botwa2000:
Not possible for S5 full stop.

I participated in those threads and can confirm that no one was able to prove success for S5.

They managed to change NV values but not actually enabled additional frequencies.
[Galaxy S 5 General] csasek:
Thanks! Using the Service Menu allowed me to get my phone on LTE with China Unicom
[Galaxy S 5 General] Enki1983:
Enable (E)Edge bands s5 G906s

In the service menu these my pictures EMIT who quote!!Want to activate (E) Edge device on my Samsung Galaxy S5 G906s..echo all bands except Edge? I live Greece ... Any help step by step it would be welcome
[Galaxy S 5 General] botwa2000:
By default Samsung opens all bands that you see in the device's specs. Vodafone typically used two LTE bands: 800 & 2600 mhz, the latter is available in G906 models and doesn't need unlocking however it's got less coverage than the 800mhz one.

None of the steps in this guide unlocks 800 mHz in S5 Prime
[Galaxy S 5 General] aurfawce:
Does anyone know if this method will work on the g900v? If so, the method I have tried to connect with a windows 8.1 with QPST and QCDM has failed, it doesn't connect to the phone and if it does just fails after that. I even tried EFS and it fails as well, I cannot connect at all if I place it in RDNIS + MODEM or really ANYTHING except the default MTP + ADB (or PTP)

If I get into the Service Menu I see LTE bands listed but only BAND 4 says supported and enabled the others say NOT SUPPORTED.

Anyone can confirm that with a g900v on Droid 5.0 this works ? Maybe it is my Windows 8.1 setup..

My phone: OptimalROM, ROOTED, Droid 5.0, G900V running on AT&T (currently do have 4G LTE service, but VERY SLOW)
[Galaxy S 5 General] botwa2000:
Which service menu are you accessing? Pls can you describe the steps.
[Galaxy S 5 General] aurfawce:
The UE Settings&Info Menu, it tells me all other bands are not supported, so I was wondering if using this method to UNLOCK GSM LTE Bands would allow the other listed to also be unlocked? Or is this a FIRMWARE coding on the G900V -- I tried the method explained in the OP to no avail. As I mentioned in my previous post.

I was wondering if anyone had successfully done this on a G900(V) or only on other models. Also, for those who have, did they get it to work on Windows 8.1? Android 5.0

--------------------

I have read through a good portion of the forum, so I saw that someone mentioned that this method MAY work to enable LTE bands that come with S5 and not ADD new ones. If that theory is correct, I guess I can answer my own question and say that on the G900(V) you can enable bands that were previously "NOT SUPPORTED." Am I correct in saying this? Or is it that maybe the G900(V) Verizon Variant hard coded something that will not allow this?

Seems though no one has confirmed this working on 5.0 though? Just KitKat?

I have no problem downgrading to KitKat if I can confirm that 5.0 is an untested area (which it seems it is, but I could have missed a portion that someone said it is working)

NO matter what mode I put it in to, it seems to refuse to read the phone so I cannot get QPST to even read the COM port.

I guess all this would be useless if the G900(V) Can't even have the remainder of the bands unlocked.

--------

I have attached pictures to show what I am talking about.
[Galaxy S 5 General] botwa2000:
I can confirm your assumption that many people confuse unlocking LTE bands that come with the phone vs. adding completely new ones - I could do the former and I couldn't do the latter.

When I get to a computer I'll try to connect with QPST and report back (I could do so on KitKat / Windows 7 but never tried on Lollipop / Windows 8.1.

Can you describe all options in the service menu you clicked to get to the list on bands you've posted?

There are two sorts: AS & NAS, the bands in the former aren't operational (or at least I couldn't find out otherwise), the bands in the latter can be 'unlocked'.
[Galaxy S 5 General] aurfawce:
Via Samsung Phone info app, I went to secret codes, in secret codes I went to 276---378 forgot the #s in the middle.

UE - protocol - NAS - network selection- then bands for LTE preference as well as GSM and others.

The other is in System instead of protocol and next page to LTE bands

----

I'm on ATT and Want to get the other bands so my LTE signal is better
[Galaxy S 5 General] montrealguy:
When I run ServiceProg.exe, I get an error message: "Error while starting qpst server. Server execution failed." Does anyone have a solution?
[Galaxy S 5 General] aurfawce:
Don't run as administrator, just run it normally.

---------- Post added at 03:58 AM ---------- Previous post was at 03:57 AM ----------

So I did the above edits, currently still on Band 4 (been working on that) will see tomorrow if it uses any new bands.

---------- Post added at 04:11 AM ---------- Previous post was at 03:58 AM ----------

Botwa2000 when you get time please check my PM, just want to make sure I got the NV writes correct, I ONLY edited to what I found the G900A to be via GSMArena and then used the NV Calc to only enable that so my input was like 65631 -- do I put it just like that in decimal format?

I checked after reboot the settings stuck.

---------

Also I figured out how to get it to work with Lollipop
[Galaxy S 5 General] montrealguy:
I already tried doing that, and I didn't get the error. But it didn't recognize any phone connected! So I was unable to continue... Help!
[Galaxy S 5 General] botwa2000:
I used NV calculator app by [MENTION=2018502]vndnguyen[/MENTION] from Google play and it gives you precisely what NV values you should write in order to add/remove particular LTE bands https://play.google.com/store/apps/details?id=org.vndnguyen.nvcalc. Just to confirm: the process was harmless but also useless for me - even that the changes stuck after reboot the added LTE bands aren't operational:(
[Galaxy S 5 General] aurfawce:
Same, the LTE Bands don't seem to be operational for me either. I still see Band 4, however! In Service Menu it seems I now have the ability to click on Band 3 in the LTE Preference. It just doesn't seem usable. When I click on it, it just sits with the X over signal. The other Bands listed won't "activate."

I noticed in the original thread by fffff -- Congrats @ Trak-X - details here --Samsung SM-G900V - Added LTE band 3

Seems I unlocked the same band, but he can use it, but it is unusable for me.

--------------

New info: so I thought I unlocked Band 3 -- which is a NON-Verizon Band according to all sources I have checked (GSMArena and Samsung) My original NV # was 4108 -- I went back to calculate with NV Calculator and based on the phone website since it only supports Band 4 and 13 I put those options in and got values of 4104 -- so I wondered why is this different from my original value?

I thought well the only other band I saw enabled is Band 3 so let's see what value I get if I put Band 3, 4 and 13 -- I got the 4108 --Leading me to believe Band 3 was always unlocked on the g900v, but usable with some carries not others..

I may just try and enable all LTE bands and see what happens, but as of right now using the #s calculated by NV Calc has produced no additional unlocked bands.
[Galaxy S 5 General] aurfawce:
Looks like either we did something wrong or doesn't work for our S5... Seems over at the OPO forums people are saying it does work.
[Galaxy S 5 General] aurfawce:
Check your QPST server and make sure it's reading a phone with like MSM if it isn't and says "NO PHONE" try adding a COM port one up and then re-run service program
[Galaxy S 5 General] MattMatt0240:
Been a while since I tried this. Last time I tried, the NV items I needed were not listed. Does this work with CM12? If so, is the only way to enable AP modem, etc... USB settings is through terminal emulator or adb, correct?
[Galaxy S 5 General] AlpineMan:
I believe there are additional NV Items that need to be added in order to enable additional LTE bands. I'm still in the exploratory stage.

I have a Verizon S5, Note 4, and Note Edge. I've also just acquired a Tmobile Note 4 and S5 and AT&T Note 4. I'll see what NV Item differences there are between phones and perhaps it will get us closer to enabling additional LTE bands on Verizon phones.
[Galaxy S 5 General] botwa2000:
I think you might be right. [MENTION=5256159]Azlun[/MENTION] pointed that much in his thread where he unlocked LTE bands in Google Nexus.

However he mentioned that the tools stated here in post #1 aren't gonna work since they can't access the entire spectrum of all available NV lines. You'll have to find / use some kind of a NV browser/editor Pro which is hard to come by.

Also the phones do have certain hardware configuration restrictions that won't allow to add just any band - it'll be different from model to model.

As soon as you come closer to understanding the NV differences between all your phones please do tell - I'm happy to test on my device - I need to add a band B20 [MENTION=4339643]800mhz[/MENTION] if possible. Also happy to upload my NV list as well.
[Galaxy S 5 General] AlpineMan:
[MENTION=5256159]Azlun[/MENTION] provided several NV Items in the other thread. He said to start with those. Perhaps importing those items would enable the appropriate bands.

And you're right, I haven't come across an app that will read all available NV Items.
[Galaxy S 5 General] MattMatt0240:
So I went ahead and tried this last night. After a few hours of installing a stock ROM, making backups, and installing QXDM/QPST, I finally made an edit to NV items 06828 and 06829. I rebooted the phone, the changes stuck, but I no longer had service, and couldn't enter an APN anymore. I went ahead and installed and tried with a few different ROMs, and I couldn't get it working again. So I restored EFS partition from a nandroid backup and everything is back to normal.

All I did was entered in the 3 bands of LTE that my carrier supports into the LTE NV items using QXDM. Anyone have any insight on how to better approach this?

I have SM-N900P with Straight Talk service.
[Galaxy S 5 General] aurfawce:
Do you have a link to the ones Azlun mentioned? Also, when you say a program that can read it, is it because the QXDM version posted here is too old? -- Just to quickly check, when you use your version of QXDM do you see options such as: B7 or B17? I was exploring on my verizon and noticed that with NV reader in the filter tab I noticed B7, B17, B4 bands listed, but could not read any of the items written in side of it and none of them are supported on my G900V (when you click it in the service menu it says not supported except for B4 and B3)
[Galaxy S 5 General] botwa2000:
What were the original NV values and which ones you entered? If by any chance you got it wrong you might have indeed brick the reception.

Or if you added a band totally incompatible/conflicting with your hardware settings.

Otherwise it's a fairly harmless procedure.
[Galaxy S 5 General] MattMatt0240:
I backed up EFS partition in recovery because QPST kept failing to backup at 12%. I didn't note the values beforehand, I know, pretty stupid of me in case something went terribly wrong.

I only want to add LTE bands, so I can get straight talks 4g on my sprint note 3. So I used the NV calculator to calculate the input I needed for those bands (1,4,17, and 25) I think band 1 may have messed it up for me. The end number for input was "16,842,761" that I put into both LTE nv items using QXDM.

Any thoughts or direction to help me get LTE? thank you! Maybe I should try 1 at a time?
[Galaxy S 5 General] botwa2000:
See [MENTION=5256159]Azlun[/MENTION]'s thread here http://xdaforums.com/showthread.php?t=2928561

Which NV Reader you're referring to? Do you have a download link?
[Galaxy S 5 General] MattMatt0240:
I used vndnguyen's calculator from the play store, and QXDM to read and edit the NV items. QPST wasn't being friendly, and I don't need to edit any 3g bands anyway. The phone was in Diagnostic mode, and the edits stuck through a reboot. I think I added an incompatible LTE band (band 1 possibly)

Thank you for your efforts.
[Galaxy S 5 General] botwa2000:
The value is correct, corresponding to the bands you are trying to unlock:thumbup:

I presume you input the values without commas? Apols if I'm asking the obvious.

In one of the quoted threads I read you might want to add one band at a time or replace your existing unused bands with the new ones - also one at a time. It didn't unlock anything for me not did it destroy anything on my phone. It might work out for you better if your hardware is tuned to operate on any of those new bands.. or it might not:confused:
[Galaxy S 5 General] MattMatt0240:
Indeed, I did not use commas :silly: I think I will try 1 band at a time, and only the ones I plan on using (since this is a sprint phone, and I don't intend on going back to them, rendering their bands useless)

I will see how it goes tonight after I have the free time. Thank you botwa for all of your information and help. Cheers buddy!

Edit: so I found a quick minute to try this again. I eliminated band 1, and added each band 1 at a time. I enabled band 4, 17, and 25(was already enabled but at&t started rolling out lte on that band recently) I rebooted, the changes stuck, and I still have signal/access to APNs. Dunno why a singe band caused all the issues before but, it should be good now. Now I have to take a drive to see if it worked. No LTE where I'm at currently :(

1 more thing [MENTION=6021435]botwa2000[/MENTION] maybe you are knowledgeable in this: In QXDM, there are 2 entries for each NV item. The second appears to be an extension. Do i need to put the new value into both fields for each NV item? See attached screenshot (the bottom field has "ext." at the end of it.
[Galaxy S 5 General] aurfawce:
No need to put it in the .ext, just the one without the .ext

---------- Post added at 09:39 PM ---------- Previous post was at 09:38 PM ----------

In QXDM, do you see those options? When you connect to QXDM and pull down the filter list, do you see B7 or B17 listed in there?
[Galaxy S 5 General] MattMatt0240:
Thank you for replying.

Yes both 7 and 17 amongst other bands are listed in the filter.
[Galaxy S 5 General] aurfawce:
So this has been tested in both KitKat and Lollipop to no avail?

Has anyone tried to safestrap/flashfire an OLDER modem from KitKat and tried this? Is it because of lollipop we haven't been able to unlock bands? Or SPECIFICALLY VZW problem?
[Galaxy S 5 General] hotsuma:
can this method used in usb modem lte
[Galaxy S 5 General] AlpineMan:
[MENTION=6021435]botwa2000[/MENTION] I've been at this for a while now trying to enable LTE bands on Verizon S5, Note 4, Note Edge, Note 3 phones. In the first page, I see that you have "setenforce 0". I haven't been doing this all this time. Your guide was the first I read that mentioned it. Perhaps this is the key missing step. Is it a required step? Thanks.
[Galaxy S 5 General] botwa2000:
In similar guides you'll find recommendations to use custom kernels most of which are set to permissive mode by default.

Since I tried the procedure on stock ROM & kernel I had to enable permissive mode manually.

Otherwise the NV changes wouldn't stick after reboot.
[Galaxy S 5 General] AlpineMan:
Ah. I see. Thanks for the tip!
[Galaxy S 5 General] aurfawce:
[MENTION=6021435]botwa2000[/MENTION] anything new since last attempts? I have not been able to get ANY new bands. I traveled to a new area and have been stuck in 3G with no luck getting bands still.. Any new discoveries?