yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy S22 Ultra] peacey8:
You don't need to keep it on GCF. You can just unlock all the bands on whatever US CSC you're on using the service menu as I explained in this post.

Also, I don't believe you can keep it on GCF if you use a North American SIM. It will automatically switch to your US carrier or XAA if your SIM is non-US. I have a Canadian SIM and it switches to XAA when I try to put it on GCF. There's no way as far as I know to change this behaviour.
[Samsung Galaxy S22 Ultra] peacey8:
I can make the guide in a new thread if you're okay with that. I'll put in all the info we learned here like how VZW isn't needed, and making DIAG work. But the guide will only be for S908U1 like this, I don't have any other S22U variant to test other than S908U1.

What is the Telegram channel?
[Samsung Galaxy S22 Ultra] wr3cckl3ss1:
So to keep GCF or XAA and also use a US carrier sim card without having it swap back to your inserted sim card, there's two options you can do. Disable WCIDMANAGER thru ADB or go thru the Service Menu and disable UIM AUTOSELECT (see pics attached). From my experience what I did was first change to XAA/GCF then I would pop in my sim card or just enable it. Then as soon as I got the Service Provider update notification to restart, I would leave my phone as is and jump into ADB and disable the WCIDMANAGER. Then I would just restart my phone manually. And XAA/GCF would stay without a problem or having the Service Provider update notification. In my opinion that would be the easiest without having to go thru the Service Menu. But if you wanna do it that way. It's easy as well.

*You're more than welcome to make that guide....just let me know what you need.
[Samsung Galaxy S22 Ultra] craznazn:
Thank you! UIM AUTOSELECT was already disabled, but pm uninstall -k --user 0 com.samsung.android.cidmanager did the trick :)
[Samsung Galaxy S22 Ultra] wr3cckl3ss1:
No problem bro.....
[Samsung Galaxy S22 Ultra] peacey8:
Very cool @wr3cckl3ss1! Is there any benefit of staying on GCF over XAA that you know of, other than bands?
[Samsung Galaxy S22 Ultra] wr3cckl3ss1:
From my experience, no. But I can tell you this....if you use the built-in phone spam app HIYA...GCF doesn't let you access it for some reason. It's still installed but there's something blocking it from you accessing it thru the dialer. XAA let's you do that without any problem. If you're dual sim, here's another thing I noticed between XAA and GCF. GCF gives you the ability to pick and choose what provider does Calls, Text and Data. Look at the pic attached. XAA is one for all, I believe. I might be wrong but out of all providers, that's what caught my eye about GCF and that's why I still stick with it. Currently on OneUI Beta 2 and by looking at the CSCs in the firmware. There's a new SINGLE CSC. XAA, GCF are single CSCs. The new one I saw was FKR as a single. And from looking inside the firmware, FKR is a "flanker" CSC of Verizon. It's even labeled as that inside the firmware. This is my first time noticing it but I'm sure it's been available since AVG6, if not a month earlier.
[Samsung Galaxy S22 Ultra] craznazn:
Yeah, having the ability to choose default SIM on call/sms/data alone is worth the price of admission for GCF. I can't imagine why Samsung would remove that option for the SD S22's, but that was one of the reasons I was set to get rid of my S22. Now that I can choose, I might keep it for a little longer
[Samsung Galaxy S22 Ultra] wr3cckl3ss1:
This is my first Samsung device since the S4. And after all that back and forth I steered away from Samsung devices. Got too spoiled with Nexus and Pixel devices. I only have this phone now because of my son. He got one and I was checking it out one day and was pretty surprised at the quality compared to the Pixel 6 Pro that I got a month before the S22 Ultra came out. Then once again found out Samsung is still ****ty with US Carriers, so I went straight in to find whatever I can...about this phone. Personally I could care less about the little details here and there but I do like a challenge. I'm going to eventually crack this /system for root.
[Samsung Galaxy S22 Ultra] mapl.ph:
Would this work on S21 Ultra?
[Samsung Galaxy S22 Ultra] wr3cckl3ss1:
Try it out. *#73#. If you see RF > Band Selection. You're good to go. Follow the guide and see what happens. Dialer codes are not device specific.
[Samsung Galaxy S22 Ultra] driv5r1:
why has samsung blocked selecting bands though the dialler with the latest update non of the codes work
[Samsung Galaxy S22 Ultra] wschofield:
Tried entering *#73# but get the message , connection error or invalid mmi code
[Samsung Galaxy S22 Ultra] Abaddon:
They do work. You just need to unlock all hidden codes using samfw tool
[Samsung Galaxy S22 Ultra] wr3cckl3ss1:
What latest update are you referring to? Because I'm on Beta 2 and they work just fine.
[Samsung Galaxy S22 Ultra] wr3cckl3ss1:
What firmware are you on? I'm using Beta 2 and it works fine. Use the app to change CSC and see if it works there then go back again to your normal CSC and see if the issue continues.
[Samsung Galaxy S22 Ultra] wschofield:
How can I change the CSC please
[Samsung Galaxy S22 Ultra] wr3cckl3ss1:
Use the SamFw FRP tool.
[Samsung Galaxy S22 Ultra] wschofield:
I sent you a dm, so as not to clog up the thread.
[Samsung Galaxy S22 Ultra] driv5r1:
im still on android 12 with latest firmware AVG6 but ther is a video on youtube were it states these latest updates have blocked certain diallers codes
[Samsung Galaxy S22 Ultra] wr3cckl3ss1:
To be honest. Take what you see on YouTube as half truths. I've been on every firmware since May which was AVDac all the way up to Beta 2 and everything still works. Now unless you have a specific code that I don't know or haven't tried then I really doubt that they know what they're talking about. And even so just because someone says they disabled it or it's not working doesn't mean that it will affect you or everyone else.
[Samsung Galaxy S22 Ultra] wschofield:
I can confirm that this same band unlocking process also works on the standard s22. The S901u1.
[Samsung Galaxy S22 Ultra] wr3cckl3ss1:
Nice. Good work.
[Samsung Galaxy S22 Ultra] Abaddon:
Just here to report that tested and working with the fold 4 (u1/US variant) too. I tried what @peacey8 posted at post 15 as *#73# did not work.
[Samsung Galaxy S22 Ultra] wr3cckl3ss1:
@peacey8

@Abaddon

@PapaDocta

Taken from another thread i posted in.....to add to the research and testing.

https://xdaforums.com/t/sim-card-manager.4410867/post-87374445
[Samsung Galaxy S22 Ultra] bassman418:
I've tried dialing *#73# and I don't get the menu. I tried both in Samsung dialer and Googles. My 22 ultra is a Verizon variant that I flashed U1 firmware on running Android13 beta.
[Samsung Galaxy S22 Ultra] wr3cckl3ss1:
Post a screenshot of your firmware. Go check the OP as well. I added a few things. It may or not help you. But first ....if you can send a screenshot or at least tell me what it says in Build Number.
[Samsung Galaxy S22 Ultra] wr3cckl3ss1:
So...Beta 1 or 2....i forget the builds of each but it doesn't matter, you're not left out. Have you downloaded the SamFW app? In OP....it gives instructions where it says CSC Change...of where to download the app. If you haven't, do that first and let me know when you do....so i can continue.
[Samsung Galaxy S22 Ultra] kraz01:
You can also use *#2263# on the S22U unlocked. I have the unlocked version with At&t U on it.
[Samsung Galaxy S22 Ultra] dj24:
^^^ This shortcut worked on my unlocked t-mobile S22 Ultra and I was finally able to get to the bands.

@wr3cckl3ss1: I followed all your steps but was unable to make the changes stick. It just reverts to the default bands. Just to make sure you type just 0 (zero) and not " 0 " with spaces between the quotes after you press the key input right? After that I just minimized the screen and swiped up to close it. I went back to the band selection after doing that and noticed it had reverted back to the default bands.

Hope I didn't do anything wrong with these final steps and if not I guess the t-mobile U devices don't work without first changing their CSC to a U1 device.
[Samsung Galaxy S22 Ultra] wr3cckl3ss1:
So from my research... some carriers disable *#2263# which ones exactly...idk but T-Mobile does enable it. As long as you can get to where it says Band Selection..... either by ways of *#73# or *#2663#..... you're good. As far as the Bands reverting. Did you make sure to uncheck the option where it says BLOCK SET by AP. Because if it's checked. That's the problem...right there. It's leaving the option to where the phone can revert itself. Double check and see if it's checked or not. Then repeat the process. And if still....you revert. I have a NEW possible way...that i posted up above but that would include changing CSC and flashing. And the new way...even though I posted. I rather get more info on and get others to try and verify it's potential and worthiness.

Oh btw it's a ZERO not the letter o in input.
[Samsung Galaxy S22 Ultra] dj24:
Yes, I had Block set unchecked as well too.

Not an o but zero. Is it " 0 " which I read this as double quote space zero space double quote or just a plain zero? Either way I tried them both and it didn't stick. Appreciate your hard work on this!
[Samsung Galaxy S22 Ultra] wr3cckl3ss1:
One last thing before you go. I hate to see a fellow tech bro in need. Are you rebooting as well after selecting input and leaving 0 (zero)(just one number). Also instead of selecting input...try the option select and press 0 (just one number) (zero) than ok. See if that works for you. You're not a special case. I've flashed U1 firmware on my U variant and have done everything including on the new Betas and both of Augusts firmware. And it all works.
[Samsung Galaxy S22 Ultra] alximiktik:
*#2263# its also work for s21 fe usa(last update), but unfortunately i cant activate 4g+( carrier aggregation). 4g network speed is very slow :(
[Samsung Galaxy S22 Ultra] Abaddon:
Try post #15
[Samsung Galaxy S22 Ultra] alximiktik:
i tried it. But since I am using non-American SIM cards, the system offer changing the service provider. It happens quickly and I don't have time to enter the code *#73#
[Samsung Galaxy S22 Ultra] Abaddon:
I'm using non american sims too. I move from US and around Asia time to time. Use adb to disable/unistall WCIDMANAGER / UIM Autoselect.

Use

pm uninstall -k --user 0 com.samsung.android.cidmanager

and try again
[Samsung Galaxy S22 Ultra] alximiktik:
i changed xaa to vzw. But now no one code doesnt work, even *#06#. Something was broken
[Samsung Galaxy S22 Ultra] wr3cckl3ss1:
VZW disables alot of the codes. But in the SamFW app.....there's an option to enable Verizon secret codes. Select it and see what happens.
[Samsung Galaxy S22 Ultra] craznazn:
Did you really read and follow the instructions on #15? Because it sounds like you did not. That, or the S21FE is not compatible (unlikely)
[Samsung Galaxy S22 Ultra] wr3cckl3ss1:
I knew I was forgetting something in the OP. To add post #15 for troubleshooting.
[Samsung Galaxy S22 Ultra] alximiktik:
Thanks a lot for helping. Yes i can use *#27663368378# and *#73#. But I couldn't activate carrier aggregation(4g+). i want to try last one in qpst efs explorer. I hope it will activate carrier aggregation in 4G
[Samsung Galaxy S22 Ultra] wr3cckl3ss1:
Don't know too much about carrier aggregation. I've only heard about it here and there.
[Samsung Galaxy S22 Ultra] spookzilla:
So will this work for selecting a specific band number? For example, my phone connects to band 12 and it's almost unusable it's so slow, but when I used Alliance Shield X I could pick which band I wanted to use and had way better speeds. Well, that app no longer works for what I need it to do and it's unfortunate because without being able to switch, my phone basically becomes useless except for phone calls. I don't have internet in my new house and have been using it for hotspot..any help would be greatly appreciated

*#2263# and other codes do not work. Using AT&T Prepaid. S906U
[Samsung Galaxy S22 Ultra] wr3cckl3ss1:
Been away on business and now I'm back.....hoping to share this info soon if it's not out yet. Ability to change/simulate AP...SIM 1....SIM 2. So that if you specifically don't want all bands enabled and just want a certain sim to be GCF or carrier based..then you have that option.

@peacey8

@Abaddon

@PapaDocta
[Samsung Galaxy S22 Ultra] wr3cckl3ss1:
Pleas refer here for a precise guide and/or troubleshooting.

How to Enable All Bands Through Service Menu on US/CA S22 series (including Sub-6 and mmWave)

What is this? This is a guide on how to enable all LTE and 5G bands on the US or Canadian S22 series phones by going through the service menu. This guide is mostly based on this S20U guide by mellojosh, but has been adapted for the S22U phone...

xdaforums.com
[Samsung Galaxy S22 Ultra] peacey8:
This looks really cool! Show us how you did it when you have time!
[Samsung Galaxy S22 Ultra] wr3cckl3ss1:
Working on screenshots right now for a semi quick method to show...I'll try to send a DM soon.
[Samsung Galaxy S22 Ultra] alximiktik:
Hi. Can you tell me how to open the menu of choosing csc?
[Samsung Galaxy S22 Ultra] wr3cckl3ss1:
The pictures are for something else.....if you want to change CSC....the SamFW app...can do that for you as long as your firmware carries the CSC you want to change to.
[Samsung Galaxy S22 Ultra] PapaDocta:
This is working beautifully.. Tested and changed from XAA to GCF for ap sim1 and sim2

Thank you man
[Samsung Galaxy S22 Ultra] LokkyUA:
Hi! I did as in the instructions. After changing XAA to VZW, everything worked out. But after I returned back to XAA, then VZW remained on sim 2. Is that normal?
[Samsung Galaxy S22 Ultra] Murdock80:
Hey guys, just stumbled upon this thread after looking for some help, hope it's okay to ask about an S21 5G here:

Having a hard time with the limited LTE availability of my device here in Germany, I tried to follow this guide but I'm stuck trying to change my CSC: SamFw asks me to enter *#0# in the emergency dialer, but that doesn't do anything. SamFW quits with "Enabling ADB Failed" and reboots the phone. Any idea?

My device is an SM-G991Q, S21 5G Olympic edition and I cannot get into the service menu at all.

Edit: I should mention, I can open *#0011#, but the "Back" button does not react.
[Samsung Galaxy S22 Ultra] rayw_xda:
It's *#0*#
[Samsung Galaxy S22 Ultra] Murdock80:
Thanks, but that only gives me the test menu (Red, Green, Blue, Vibration, Speaker, etc) and nothing happens.
[Samsung Galaxy S22 Ultra] wr3cckl3ss1:
Did you not read the guide? Answers are there for what you need.
[Samsung Galaxy S22 Ultra] wr3cckl3ss1:
Refer yourself to the part where it says IMEI PRE CFG SIMULATION in the guide to change it.
[Samsung Galaxy S22 Ultra] wr3cckl3ss1:
You're welcome. I may have some more treats to share....depends on when I have time as I'm also dealing with a Verizon Pixel 7 Pro and getting it bootloader unlocked. Biggest headache of my life right now.
[Samsung Galaxy S22 Ultra] wr3cckl3ss1:
*IF I RESPONDED TO YOU RECENTLY*

PLEASR REFER YOURSELF TO @peacey8 GUIDE. FOR ALL UP TO DATE INFORMATION AND/OR TROUBLESHOOTING. I DONT HAVE MUCH TIME ON HERE TO KEEP THINGS UPDATED. AND STAY TUNED .....NEW TRICKS COMING SOON! AND I WILL SHARE ON @peacey8 GUIDE.
[Samsung Galaxy S22 Ultra] 海哭的浪漫:
Great but I wonder if it will affect the OTA of the phone if only the frequency band is enabled and the CSC is not modified
[Samsung Galaxy S22 Ultra] wr3cckl3ss1:
No
[Samsung Galaxy S22 Ultra] LokkyUA:
Thank you very much for the tip! It took me several days to find this item without a guide :)
[Samsung Galaxy S22 Ultra] arzik1978:
Hello. How to reset the engineering menu settings? (*#73#)
[Samsung Galaxy S22 Ultra] Abish:
Need to enable 5G bands on GCF for India,

Here are the ones available locally Airtel 5G Bands In India

n8 (900Mhz)

n3 (1800Mhz)

n1 (2100Mhz)

n78 (3300Mhz)

n258 (26Ghz)

&

n28.

Any specific instructions?
[Samsung Galaxy S22 Ultra] doubledragon5:
Question. I did this a while ago.. How to tell for sure if you have all bands enabled.. So far all the secret codes people have issues with I have not encountered any issues.
[Samsung Galaxy S22 Ultra] jatin21:
Can anyone help, after changing the CSC to VZW, the Samfw FRP tool stuck on "Waiting for DIAG" after clicking on "enable secret code for verizon". I'm on Android 13 with December security patch.

**UPDATE**

I was able to make it work by installing the Samsung drivers from the SamFw FRP tool itself. The earlier drivers that my system has were installed by SmartSwitch software.

CSC change was successful using the smartswitch drivers. However, for enabling the code, the specific drivers that Samfwfrp provides needed to be installed.
[Samsung Galaxy S22 Ultra] AntsGather:
ugh, I edited this because I had typed the wrong code.

it's *#2263# ( *#BAND# )

I have a Samsung s22+

SM-S906U1 factory unlocked, with updates thru jan 1 2023 including the infamous update of july '22 that sabotaged access to the hiddennetwork activity band selection.

The *#73# dialer code does not work on this phone.

Also, note that which dialer codes do and do not work depends on what phone app you're using to dial with.

Using the original Samsung phone app, not updated, that came installed on this phone

*#2263#

Directly opens ServiceMode band selection menu.

Using a different phone app, like Google Phone the code doesn't work. I recommend if *#2263# is not working on your carrier branded phone to install an apk of the Samsung phone app from a factory unlocked version to see if the dialer code works. This app has permissions to run this ServiceMode menu, but trying to launch the same activity with another app returns an error of "permission denied"

I hope this helps
[Samsung Galaxy S22 Ultra] Darktron13:
DSH is for Dish

But DSA seems to me like is also Dish from my testing

Edit: more exactly Boost Infinite (DSA = Dish+AT&T?)

Edit2: I can confirm DSA is indeed Dish standalone after verifying with my boost infinite sim. So basically DSH = old Dish and DSA = new Dish (specifically postpaid).
[Samsung Galaxy S22 Ultra] ElIT3ShOOT3R:
Is there any workaround for OneUI 5.1?
[Samsung Galaxy S22 Ultra] wr3cckl3ss1:
B

PATCH BYPASSED. Both the US S22 U and S23 U on latest firmware. Showing system shell...
[Samsung Galaxy S22 Ultra] matale0:
*#2263# work on mine
[Samsung Galaxy S22 Ultra] Vijaysharma20:
To enable and select bands on a Samsung Galaxy S22 through the dialer, you can follow these steps:

Open the phone dialer app on your Samsung Galaxy S22.

Dial *#2263# to access the Service Mode menu.

Select "Band Selection" from the menu.

Choose the SIM card slot you want to configure, if applicable.

Select "LTE" from the list of options.

Choose the band you want to enable from the list of available bands.

Hit the "Apply" button to save the changes.

Please note that not all bands may be available in your area or compatible with your carrier. Also, changing the band selection may affect the quality and speed of your cellular connection.

To change the CSC (Country Specific Code) on a Samsung Galaxy S22, you can follow these steps:

Go to the phone dialer app on your Samsung Galaxy S22.

Dial #272IMEI# (replace IMEI with your phone's actual IMEI number).

A menu will appear, select "CSC".

Choose the country code you want to switch to.

Confirm your selection and reboot the device.

Please note that changing the CSC may void your device's warranty and it may not work with all carriers or features in your new country. Additionally, this process may erase all data on your device, so it's recommended that you back up your files before attempting this.
[Samsung Galaxy S22 Ultra] Sillyhippyjoe:
Are there any other ways to change CSC? It's not working on my phone.

S22

SM-S901U1
[Samsung Galaxy S22 Ultra] wr3cckl3ss1:
Dialer method does not work for changing CSC. It has been patched since Android 10. But there are other ways to get into the Preconfig menu. Look around. There's info on XDA to do this.
[Samsung Galaxy S22 Ultra] esemyuron:
Hello, is there any working solution to enable carrier aggregation on Galaxy S22 S901U1 with latest firmware?
[Samsung Galaxy S22 Ultra] dj24:
Why don't you paragraph, will ya? 😉
[Samsung Galaxy S22 Ultra] pavel_ment:
Hi all. I have a Verizon phone that I flashed in U1 XAA. I can't get the full list of support 5g frequency what could be the problem? how can I activate the full list of frequencies
[Samsung Galaxy S22 Ultra] olhaomenino:
Dear @peacey8 and @wr3cckl3ss1, thank you very much for sharing your expertise. I can confirm the method still works for SM-S901U (Exynos 2200/One UI 5.1/CSC:USC). I had to Enable Secret Codes via SamFW FRP tool and change the DIAG settings as instructed. No CSC change needed.

Now, there is one thing that I couldn't understand, why don't I see the B40 (2300Mhz) frequency band as option on my 5G band list? It should be something like "NR B40 SA - sub6" or something. This is a commonly used band by internet providers and I missing it in the options. Can anyone help?

Also, can anyone advise on best practices to sustain the method working for the longest time possible? For example, disable OTA updates, etc.
[Samsung Galaxy S22 Ultra] peacey8:
I do not believe the S901U modem supports n40 band on 5G. I cannot see it listed for hardware online for either US or international model of your phone. My S23U phone also does not support this band.

If you have already tried to unlock all bands by removing NR5G Prune (first method) or GCF protocol simulation (2nd method), then there is nothing else you can try. The hardware likely does not support that band.
[Samsung Galaxy S22 Ultra] NOMIOMI:
* # 73 # not wroking on my s22 ultra SM-S908E/DS
[Samsung Galaxy S22 Ultra] JeffATL:
Does this work with One UI 6.0 ?
[Samsung Galaxy S22 Ultra] JeffATL:
Does this still work? Have OneUI6. I was on GCF and changed to VZW and it changed to VZW/VZW/VZW/XAA, then tried it again , same thing but changing to VZW seems to have blocked out my access to test mode so I hope I can get back to GCF without needing to flash again. When I try to enable secret codes I get Enable Diag Ok, but then Waiting for Diag and it hangs

Edit: Found you're other thread , trying to follow 0808 instructions, doesnt seem to be working but still trying
[Samsung Galaxy S22 Ultra] breeze-ac:
I bought a used phone and someone had already turned off all the LTE radio bands on it. How can I turn them back on? I clear it with item 7, but when I select item 8, only those bends that were there when I entered the menu still appear. please, help:)
[Samsung Galaxy S22 Ultra] michalbb:
On s23+ worka?
[Samsung Galaxy S22 Ultra] JeffATL:
Chocolate factory?
[Samsung Galaxy S22 Ultra] JeffATL:
I know this post is two years old but disabling CIDManager is the way
[Google Pixel 5a] CustomOShacks:
View attachment 5694447I have a pixel 5a that was flashed with a custom os the restricted developer options and locked the bootloader is there any way for me to remove the os and go back to stock android?

This is what they sent me

(I was told that I might be able to flash the snapdragon soc directly by putting the phone in edl mode does anyone know if it’s feasible?)