yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy S22 Ultra] chrystalia:
Hello,

Thank you very much for this forum and particularly this very well explained tutorial!

I bought an S22 ultra US version but supposedly compatible with Europe.

Model Name: SM-S908U1

Phone that constantly loses network in France...

I tried your 2 procedures and managed to unblock some bands but not all. I'm missing all those above 78.

I tried both methods several times but to no avail.

What to do ?

Thanks in advance
[Samsung Galaxy S22 Ultra] anirga:
Hey, using this tutorial, I managed to unlock all the bands required for 5G on my SM-S908U1. But I just can't enable carrier aggregation for LTE, no matter what I do. I've followed the steps mentioned, but it's just not working. For context, I'm from India, and I'm using Jio as my service provider. Is there anything else that I can do?
[Samsung Galaxy S22 Ultra] JohnWick90:
Hi bro i followed ur steps 3 times. Now it shows lte + instead of lte only but doesnt show 5g.
[Samsung Galaxy S22 Ultra] omarorabi:
So what is the culprit? I have the same problem
[Samsung Galaxy S22 Ultra] ikiri:
Hi guys! Thanks for this istruction i can use my us phone on italy! I've got a question, after the change i can't use anymore ID call under telephone settings, there's some workaround to have it again?
[Samsung Galaxy S22 Ultra] macgd016:
I have actually read ALL 28 pages of this thread (I have to admit I have only scanned it all quickly so I am sure I have missed quite a bit!!) but I've got brain fade and haven't been able to answer my two questions:

1. Is this still working on Android 14 or even 13

2. Will I be able to enable n78 on a SM-G998U
[Samsung Galaxy S22 Ultra] jeet1396:
how to enable 5g in india for SM-s908n model???
[Samsung Galaxy S22 Ultra] jarnaljit singh:
gys please help me i have samsung a14 5g but jio 5g is not working and its running on oneui 5.1. please help me how i can use jio 5g in this phone.
[Samsung Galaxy S22 Ultra] Trex888:
Thank you so much for this easy and excellent guide

I was able to unlock all LTE/5G & CARRIER AGGREGATION on my s20ultra g988u1 xaa

I live in Dubai and I can confirm this guide enables all the required bands for LTE & 5g & carrier aggregation

Thanks again

View attachment 6040845
[Samsung Galaxy S22 Ultra] AyushDhoot:
I updated my s22+ to Android 14 and it has not been able to connect to 5g yet although i still see all the bands enabled in the menu
[Samsung Galaxy S22 Ultra] avmi0099:
Thanks for this guide. it worked! Just wanted to ask, my phone is XAC from canada, but I've successfully flashed it to XAA thanks to this guide. Can i use do OTA updates on it or do I need to re-flash if I want new updates?
[Samsung Galaxy S22 Ultra] jcsww:
OTA's for the firmware version you are on (U1) will arrive normally and install normally.
[Samsung Galaxy S22 Ultra] avmi0099:
Thank you!
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
Remove NR prune again it usually restore the combo after an update.

And also set the LTE band config to default to remove the LTE carrier aggregation combo limitations.
[Samsung Galaxy S22 Ultra] JeffATL:
Finally! I have been stuck on Waiting for Diag. Tried 0808 didnt help . Redownload drivers because was suggestion in thread but they were already installed for sure , I have used them on many occassions. Then I changed the port dropdown for the connection to DIAG, got an MTP failed error but secret codes enabled worked fast.

Changed back from XAA to GCF because I love the dual sim control from the notification pulldown . Using TMobile on one sim and US Mobile on sim 2 with Verizon network.

I was trying to follow the instructions in first thread for band selection but I am a bit confused.

When I go to *#73# service mode, it shows both sims as TMB which is a bit confusing. but then I am confused. I tried following some of the instructions to enable 5g bands but only getting 4g on sim 2 . Not sure if is my location or if something is just not enabled.

So basically I need help getting 5g for US Mobile on Verizon ? My bands match the screenshot in first post
[Samsung Galaxy S22 Ultra] skylinegtrvspec:
I wanted to ask a question in regards to some of the comments and those who have already done this.

So my post is in relation to this somewhat . If im using an s23 ultra ans its a us version from AT&T SM-S918U is it possible to flash the stuff from a U1 to this model SM-S918U?

I ask this because it seems AT&T or samsung is holding my 5g hostage . When i place my sim card in an s21 ultra also from AT&T it changes my 4GLTE TO 5G but when i change it back to my s23 it goes back to 4glte also my hotspot doesnt work on cricket . I know this is the sowftware thats doing this because its happened before and once i got a new software update it fixed it . I love the international version as i had one before and works better.

So is it possible and how?
[Samsung Galaxy S22 Ultra] MisterEdF:
I downloaded and successfully (according to odin) flashed XAA U1 firmware to my USA s22Ultra on Android 13 however software version doesn't show as XAA it shows .......VERIZON/ATT/............ lots left out between the dots. Firmware came from SAMMOBILE. FWIW, this started out as an ATT device, was unlocked by ATT and is now on USMobile (Verizon MVNO). So none of the dialer codes work.
[Samsung Galaxy S22 Ultra] wkertoip:
Hi @peacey8,

Is it any chance that S22 ultra support SA mode for n258/n257 ? , I noticed that using you method it appear on the list, when use option " Select all NR bands" :

View attachment 6056519

but after applying this configuration seems that only NSA is supported:

View attachment 6056520
[Samsung Galaxy S22 Ultra] ipernexus:
Hi All,

I also have the same problem in Europe (Italy) with SM-S908B/DS, the same simcard in another phone works better, I tried with an old iPhone 6s and the network works perfectly where my S22U doesn't get the internet, pages and loads are really very slow, the iphone charge all really faster without problem.

Has anyone performed the procedure in this guide on the exynos version? or do you know any solution? I'm also ready to root it if I need to put a customrom that solves the problem. The phone is a year old and I honestly don't feel like replacing it. I have already tried to check if it is possible to enter the band menu but this function seems to have been disabled in June2023 and therefore I no longer have access to the band selection.
[Samsung Galaxy S22 Ultra] bolakale30:
How do I undo the CSC to GCF simulation
[Samsung Galaxy S22 Ultra] JeffATL:
Does this look right, two different SIMS, does it look like I have all bands selected? I am not good at reading this stuff.... Thanks. I think the left one is using TMO and the right is using Verizon , but they are both labeled TMO in the Band Selection menu

View attachment 6058697View attachment 6058698
[Samsung Galaxy S22 Ultra] dawitlal2:
View attachment 6058840To enable all LTE bands, a reset is required. Are there any other options available?
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
Reset there means reboot your phone only
[Samsung Galaxy S22 Ultra] dawitlal2:
"I have followed all the steps and tried two methods: resetting and trying again. However, none of the LTE bands or NR are accessible. Please see the capture of what I have obtained. Any advice would be greatly appreciated."View attachment 6060874View attachment 6060875
[Samsung Galaxy S22 Ultra] lestatab:
It is a problem described in many forums, I have been experimenting and I am with GCF scs and only 4g (LTE only), it is the only way I made the internet work correctly.

[SOLVED] Poor/Weak signal after update

Long story short, changing the csc to TMB (or the csc of your country) and disabling cidmanager is enough (Update4). Yeah, yeah, I know. It's a well-documented and apparently unsolvable problem, but after trying several options that I read...

xdaforums.com
[Samsung Galaxy S22 Ultra] somanshmittal:
These steps worked fine on my Galaxy S22 Plus US Version (SM-S906U1) and now I am getting 5G on Jio e-SIM in India.

Now the thing is, when I was performing these steps, I was located in an area in my house where the 5G signal is wonky so I performed all the steps described in the post in sections C and D.

Now although I am getting 5G on my phone, there seems to be some issue with the network itself. Whenever the signal is on 4G LTE and say it shifts to 5G, there seems to be loss in the mobile network entirely. The signal goes off (phone shows emergency calls only) and then comes back to either 4G or 5G; I am unable to make any calls during this time. Anyone have any idea if I have carried out steps that I should not have?

Also, is there a method to revert these changes to default?
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
Try this one
[Samsung Galaxy S22 Ultra] somanshmittal:
Thanks for this video! Have applied this setting for now, will check if this helps. However, the video description says it doesn't work for e-sims and I am using an e-sim. For now, tried toggling LTE and 5G from network settings and that didn't cause any disconnection in the network so maybe it does work!
[Samsung Galaxy S22 Ultra] hoevinniedie:
@Romeo Nickolas Would a toggle solve the problem as well? Leaving DRX off causes more battery drain ;)

I don't have this problem, but just want to make people aware of the DRX functionality. Although, a working mobile is more valuable :D
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
Yes, you're right, and I'm aware of that DRX purpose, but battery drain isn't noticeable (for me) since I barely go outside and use my mobile data.

You only have 2 choices.

1. Avoid battery drain but you can't use 5G.

2. Small battery drain and enjoy the speed of 5G. 😉

I already reported about this on samsung but they sent me an auto generated reply lol.
[Samsung Galaxy S22 Ultra] ccjl:
Is there any benefit to unlocking all the bands?
[Samsung Galaxy S22 Ultra] peacey8:
If you fit any of the following cases, then there is a benefit.

If you're using a US phone in another country (either travelling there or live there), the bands are locked to the US bands so 5G/4G+ might not work. Unlocking all bands will allow you to use 5G or 4G+ in other countries on the US firmware.

Different carriers in the US also use different 5G bands, so if you're using some other carrier's firmware for whatever reason, then this method will unlock all bands for your carrier.

Also, if you're using some small time carrier in the US that didn't optimize the CSC to their bands properly, unlocking all bands might help get better 4G+/5G coverage as well (as @bigdave79 said here).

If you don't fit any of the above cases, then there is no benefit.
[Samsung Galaxy S22 Ultra] phormskaran:
Hi in the beginning i was little confused because i live in a 5G area and it didn’t show 5G indoors but when i went out it Suddenly it showed only 5G and 4G+ so in Short issue resolved ;)

Apart from the Network the U1 XAA Firmware makes the phone so fast and the Battery remains all day long with the U AT&T Firmware it was just laggy and the Battery lasted 06h a hours after full charge
[Samsung Galaxy S22 Ultra] cokeito:
I've done all the steps above, seems the be unlocked, but none of my both simcards are able to get 5G (i've unlocked the n78 band) that's the one used in Chile.

Any advice or smth im doing wrong?

i've got exact same information as screenshot posted after unlock
[Samsung Galaxy S22 Ultra] Abaddon:
I see,

I just did what OP gave @peacey8 and @wr3cckl3ss1

-Change CSC to VZW

-Removed WCIDMANAGER / UIM Autoselect with adb shell pm uninstall -k --user 0 com.samsung.android.cidmanager.

-Unlocked all codes using samFW tool

-Did the procedures and rebooted the device.
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
Thank you for info so I guess it only works on latest S and Note phones.

I think modifying the nv files value is the only way to edit the LTE+5G combo on x55 modems. The problem is I don't know what value and what files to be modified. Someone knows how to do it but he/she is no longer active here.
[Samsung Galaxy S22 Ultra] peacey8:
Are you sure you're in an area with 5G coverage?

Since you have 2 sim cards, did you unlock all the bands for both sim cards? You can see n78 NSA for both Sim 1 and Sim 2?
[Samsung Galaxy S22 Ultra] cokeito:
Yep, did it for both, i see on both simcards the n78 unlocked,

im driving crazy bought the phone on pre-sale on usa to get 5G fast, and until today no way to make this thing work :/

thanks for ur help mate.!
[Samsung Galaxy S22 Ultra] peacey8:
Does your carrier allow all subscribers to use 5G, or do they restrict it to some plans? Which carrier are you using? And again, are you sure there's 5G in your area?

You said you're in Chile, and I can see that Chile only uses 5G NSA and not SA. Make sure you didn't enable SA as it can cause problems if your provider doesn't use it but is testing it. Basically this option (make sure to disable it for both stacks),

Service Mode Main Menu -> UE SETTING & INFO -> SETTING -> PROTOCOL -> NR5G -> NR5G SA/NSA Mode Control -> SA DISABLE.

Also, did you try the DISABLE CA COMBO CHECK option?

One more thing, did you make sure 5G is enabled in Settings (phone settings not service menu) -> Connections -> Mobile Networks -> Network Mode?

Can you also dial *#*#4636#*#* and then click Phone Info and check what it says on that screen for "EN-DC available", "DCNR Restricted", and "NR Available"? There is also a "Set preferred network type" option there, make sure it is also set to 5G/LTE or any option with 5G.

Keep in mind only one SIM can use 5G at a time. You cannot connect to 5G on both sims. Only the SIM you set as primary SIM will connect to 5G.
[Samsung Galaxy S22 Ultra] serkandanis:
This thread is exactly for me! I have s22 ultra S908U1 and i live in Turkey. Since couple months i was having signal issue. Was receiving Edge. I'll let you know after try. Thank you!
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
Can I have a favor again? If you have time can lock to LTE band3 and 5G n41 only if it is still can connect to 5G.

Please send a screenshot again on *#0011# if it is working. Thank you in advance!
[Samsung Galaxy S22 Ultra] dubblecup:
Hi guys. I have the s20 ultra t-mobile version. I live in the Bahamas and we use the B17 for LTE. Unfortunately it's not enabled and the codes don't work to get to the UE menu. Can you provide a way to get to the UE menu to enable B17?I did it with may s10+ but method no longer works. Any assistance would be greatly appreciated. Thank you.
[Samsung Galaxy S22 Ultra] dubblecup:
Hey guys. Will this method work for the s20ultra?I'm in the Bahamas and I have the t Mobil version. Unfortunately we use B17 for LTE. I can no longer access service menu to enable it. Will the method in the OP work?Thank you.
[Samsung Galaxy S22 Ultra] peacey8:
Did you follow the instructions in the OP to unlock secret codes using SamFW FRP Tool first?
[Samsung Galaxy S22 Ultra] dubblecup:
No I didn't try it as yet. Just wanted to know if there's any chance that it would work. In the OP credits went out to the guy who started this tutorial (for the s20 line) and now is improved upon for s22. The thing is that non of the codes work in neither stock dialer or Google dialer. So was just wondering if there's a possibility. But will make an attempt at it when I get off from work.
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
The samfw tool works even on exynos but has limited menu.

I'm using note 20 ultra and it works.
[Samsung Galaxy S22 Ultra] Abaddon:
Maybe on the weekend as I am overseas atm
[Samsung Galaxy S22 Ultra] dubblecup:
Aaagh. Good stuff. Will attempt when I get off from work. Thanks.
[Samsung Galaxy S22 Ultra] peacey8:
The codes didn't work for any of us before unlocking secret codes with SamFW FRP Tool first. I haven't tried it myself on your phone, so I can't confirm it to you, but you have nothing to lose by trying and reporting back.

Also make sure to use the stock dialer, these codes don't work from Google dialer.
[Samsung Galaxy S22 Ultra] dubblecup:
Hi. I tried and it worked. I'm able to get into the service mode. Butt....still can't enable B17 I have navigated the menus up and down but whenever I go back to band selection it's not there. What am I doing wrong?
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
Once you're connected to 5G on your

ESIM try dialing *#0011# and choose sim 2 if NRCDRX is active the steps you've done isn't applied just like mine and the signal goes off again after few seconds using esim.

View attachment 6065212
[Samsung Galaxy S22 Ultra] somanshmittal:
Strangely, I do not see this entry in the list on my phone; I am on 4G at the time of checking this FYI.
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
NR is 5G, so you won't see that if you're on LTE. That's why I said once you're connected to 5G.
[Samsung Galaxy S22 Ultra] Owing_14:
Can U explaine this pls. It says 5G Nsa disbale then I can connect to 5G but no internet it just goes back to LTE
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
Based on your screenshots your carrier config is set to GCF so all CA combo limitations are already removed.

Try to disable your power saving mode.

Your screenshot on band configuration is only on sim 1. And based on the netmonster screenshot sim 2 (smart) has the 5G signal.

Can you screenshot the SIM 2 config too if it's also on GCF.

Based on your carriers you're in PH and I'm also in PH. You can PM me for faster response about your problem.
[Samsung Galaxy S22 Ultra] dawitlal2:
Thank you, creator, and members of XDA. I have the S21 Ultra 998U1 factory U ATT. I want to use 5G, so I enabled the service menu and tried every procedure posted in this forum. However, I still can't fix it. When I use *#0011# and *#*#4636#*#*, I get the result that I attached. Can anyone provide advice or point out any errors that I might have made? Please help, as the 4G speed is too slow here.
[Samsung Galaxy S22 Ultra] Thechla:
samfw tool 4.9 wouldnt open error says 'source code is been modified'

any solutions? ive even uninstall all my antiviruses and windows firewalls been disabled still somthing stops the file from running

somebody pls help

View attachment 6066859
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
Based from your screenshot on *#0011# you're already connected to 5G NSA.

It's the data indicator that's not changing to 5G.

Try changing your CSC to GCF using samfw app but disable CIDMANAGER first so it won't force you to restart when changing CSC.

Here's the adb command to disable cidmanger:

pm disable-user --user 0 com.samsung.android.cidmanager

Can you screenshot your CSC and what country and carrier are on?
[Samsung Galaxy S22 Ultra] dawitlal2:
thank you for quick response

my CSC is XXA as you suggested i changed using samfw tool in to GCF CSC there is no additional band seen
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
What country and carrier are you on?

What band are you trying to unlock?

You're already connected to 5G based on your previous screenshot, but the data indicator shows LTE.
[Samsung Galaxy S22 Ultra] Thechla:
Finally I get the tool working and this is my band screenshot

Problem is I still don't get network inside the house

I'm in UK and using Lyca mobile

Android 14 one UI6
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
Have you tried the SET LTE BAND CONFIG to default?
[Samsung Galaxy S22 Ultra] Thechla:
If it's not already on default, will do that and report. Thanks for suggesting
[Samsung Galaxy S22 Ultra] MobileGuy124:
Im having the exqact same problem, tho 5g is connected at the back the indicator shows LTE and speeds are also over LTE pls help me to fix this issue

Even im having the exact same problem my CSC is XAA on one ui6 febuary patch G998U1. Im currently in Nigeria and my carrier is Airtel it shows me i am connected to 100mhz of N78 in service mode but the status bar logo displays LTE. And 1 more problem even my Carrier Aggregation on LTE isn't working pls could you help me fix the issue
[Samsung Galaxy S22 Ultra] MobileGuy124:
Im in NIGERIA i had the same problem about service mode showing i was connected to 5g but the indicator still showing LTE. I just changed my CSC to GCF and now 5g works, 4g+ does not work on Airtel but works on MTN so just try to check if u recieve 5g as by my guess even ethio telecom uses N78 NSA.
[Samsung Galaxy S22 Ultra] dopejay31:
Hi, will this work for the S24 Ultra? I have a US unlocked S24 Ultra, but the 5G isn't working here in Nigeria.
[Samsung Galaxy S22 Ultra] dopejay31:
after changing csc to GCF , it shows this below and revert back to XAA after I click on restart and switch
[Samsung Galaxy S22 Ultra] MobileGuy124:
Sure I'll reach out to you by the soonest i can
[Samsung Galaxy S22 Ultra] MobileGuy124:
Do you have a US Region SIM? That should not be happening until u have a US sim in ur phone
[Samsung Galaxy S22 Ultra] dopejay31:
nah don't have a US sim
[Samsung Galaxy S22 Ultra] kamdi.olb:
Jjy

It have been resolved.
[Samsung Galaxy S22 Ultra] Thechla:
Yes it's resolved changed from win7 to win11 PC disabled all security all worked fine accept for the phones network.

Inside the house no network outside the house it works. Couple of bands are missing if compared to the OPs post may be that's the problem. Don't Want to waste any more time on it. At home will use wifi and outside tower network either ways everyone on what's app calling now so not a big deal.
[Samsung Galaxy S22 Ultra] dawitlal2:
Before changing your CSC to GCF disable CIDMANAGER first so it won't force you to restart when changing CSC.

Here's the adb command to disable cidmanger:

pm disable-user --user 0 com.samsung.android.cidmanager
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
Please do what I wrote on the top qouted post.

Disabling Cidmanager removes the service provider update pop up so the csc won't revert back.
[Samsung Galaxy S22 Ultra] dopejay31:
okay thanks , will my phone still get software updates if I change to gcf?
[Samsung Galaxy S22 Ultra] MobileGuy124:
I don't think so
[Samsung Galaxy S22 Ultra] ajaytseng0221:
Someone can share galaxy s22 00029652 efs file ,thanks!!
[Samsung Galaxy S22 Ultra] ajaytseng0221:
anyone with a US s22U able to download a copy of 00029652 from /nv/item_files/rfnv/ please?

Accidentally removed the mmwave modem.
[Samsung Galaxy S22 Ultra] soyeb786:
B step is not working with me. I Tried with SMM FW tool for unlock secret code but it's not working its stuck @ Waiting for DIAG"
[Samsung Galaxy S22 Ultra] jcsww:
Do you have USB Debugging enabled in Developer Options? Do you have the correct drive installed for when the device is in EDL?
[Samsung Galaxy S22 Ultra] soyeb786:
Yes everything is correct
[Samsung Galaxy S22 Ultra] jcsww:
Are you using the original Samsung cable that came with the device? Not all USB cables are capable of data transfer and not all cables are created to the same standards. Have you tried a different USB port on your PC?
[Samsung Galaxy S22 Ultra] soyeb786:
I just reinstalled the driver and it is working now. I enable secret code now I am confused how to enable all bands
[Samsung Galaxy S22 Ultra] jcsww:
There are multiple things needed to be done to enable all bands. Follow each step of the instructions in the OP to make sure you don't miss anything.
[Samsung Galaxy S22 Ultra] soyeb786:
do you have any video tutorial?
[Samsung Galaxy S22 Ultra] jcsww:
I don't. I followed the instructions in the first post successfully to enable more bands on multiple s23 Ultra's.
[Samsung Galaxy S22 Ultra] soyeb786:
Do you know how to Enable VoNR ??
[Samsung Galaxy S22 Ultra] MobileGuy124:
Hi pls im facing a big issue on my S21 Ultra. My sim doesn't connect to any kind of network 2g 3g 4g 5g none of them it used to work before even had great speeds on 5g bit now when i go to band selection i don't see any of the bands available whereas before i had all bands ( I'll link some screenshots of the band selection screen below). I went to get it fixed by a mechanic and he said that the 'IC' of the phone was faulty. If someone can help me fix the problem pls help me.
[Samsung Galaxy S22 Ultra] shreyashpatil26:
after following the enabe all 5g and lte band methods my 4g is showing but not working, please help

edit:- it automatically picked up 5g after activating 5g on my jio sim through an Indian 5g phone, hardly took 10 minutes to do so, now 5g is working.