[Q] TCL S838M : Service Menu Code - General Questions and Answers

All,
Question:
I'm locking for the code to access the "service menu" of a TCL s838m.
TCL s838m
http://www.devicespecifications.com/fr/model/d08e2cc6
The target is to change "SERVICE DOMAINE" from "cs+ps" to "ps only'
This do works on a galaxy S5 using the code *#0011# and the procedure described in
http://forum.xda-developers.com/showthread.php?t=2717361&page=5
Using "TCL s838m", I wasn't able to access the "service menu" using the following codes:
*#0011#, *#197328640#
Only *#*#4636#*#*, give me access to the phone info but not "service menu"
Thanks for your help.

Related

[Q] LG Codes no longer Working

So, I did some digging and I found a list of codes for LG...
To check LG mobile or cellphones IMEI (International Mobile Equipment Identity)
On the main screen type *#06#
Information you get from the IMEI (International Mobile Equipment Identity)
XXXXXX XX XXXXXX X
TAC FAC SNR SP
TAC = Type approval code of your LG Mobile
FAC = Final assembly code of your cellphone
SNR = Serial number of your LG Phone
SP = Spare
Other secret tricks for LG mobile or cellphone
LG all models test mode:
Type 2945#*# on the main screen.
2945*#01*# Secret menu for LG
IMEI and SW (LG 510): *#07#
Software version (LG B1200): *8375#
Recount cheksum (LG B1200): *6861#
Factory test (B1200): #PWR 668
Simlock menu (LG B1200): 1945#*5101#
Simlock menu (LG 510W, 5200): 2945#*5101#
Simlock menu (LG 7020, 7010): 2945#*70001#
Simlock menu (LG 500, 600): 2947#*
LG-U81XX SPECIAL CODES
Code to read phone version :
- Phone without SIM
- Enter 277634#*# or 47328545454#
- Select 'SW Ver.info'
Code to reset phone :
- Phone without SIM
- Enter 277634#*# or 47328545454#
- Select 'Factory Reset'
Code to enter UNLOCK MENU :
- Phone wit SIM inside
- Enter 2945#*88110#
Test Menu 8330 : 637664#*#
Test Menu 8180 V10a: 49857465454#
Test Menu 8180 V11a: 492662464663#
Test Menu 8130-8138: 47328545454#
Test Menu 8110-8120: 277634#*
The only problem is, any code I try fails. I get USSD Code Running....
then I get the message MMI code Cancelled.
Anyone run into this before? This worked before I rooted and applied Pauls pre-dexopt tweek.
You may miss the sticky.
Try
2945#*999#
Izzydroolin said:
So, I did some digging and I found a list of codes for LG...
To check LG mobile or cellphones IMEI (International Mobile Equipment Identity)
On the main screen type *#06#
Information you get from the IMEI (International Mobile Equipment Identity)
XXXXXX XX XXXXXX X
TAC FAC SNR SP
TAC = Type approval code of your LG Mobile
FAC = Final assembly code of your cellphone
SNR = Serial number of your LG Phone
SP = Spare
Other secret tricks for LG mobile or cellphone
LG all models test mode:
Type 2945#*# on the main screen.
2945*#01*# Secret menu for LG
IMEI and SW (LG 510): *#07#
Software version (LG B1200): *8375#
Recount cheksum (LG B1200): *6861#
Factory test (B1200): #PWR 668
Simlock menu (LG B1200): 1945#*5101#
Simlock menu (LG 510W, 5200): 2945#*5101#
Simlock menu (LG 7020, 7010): 2945#*70001#
Simlock menu (LG 500, 600): 2947#*
LG-U81XX SPECIAL CODES
Code to read phone version :
- Phone without SIM
- Enter 277634#*# or 47328545454#
- Select 'SW Ver.info'
Code to reset phone :
- Phone without SIM
- Enter 277634#*# or 47328545454#
- Select 'Factory Reset'
Code to enter UNLOCK MENU :
- Phone wit SIM inside
- Enter 2945#*88110#
Test Menu 8330 : 637664#*#
Test Menu 8180 V10a: 49857465454#
Test Menu 8180 V11a: 492662464663#
Test Menu 8130-8138: 47328545454#
Test Menu 8110-8120: 277634#*
The only problem is, any code I try fails. I get USSD Code Running....
then I get the message MMI code Cancelled.
Anyone run into this before? This worked before I rooted and applied Pauls pre-dexopt tweek.
Click to expand...
Click to collapse
Thanks mingkee, but I'm not trying to unlock the phone, I'm just trying to get to the secret menu. Still no go.
The standard secret menu? *#*#4636#*#*
Izzydroolin said:
Thanks mingkee, but I'm not trying to unlock the phone, I'm just trying to get to the secret menu. Still no go.
Click to expand...
Click to collapse
Get "anycut" from market.

How To: Enable LTE without ROOT/FLASH (model: SM-N900W8)

It's been awhile since I was on the forum but thought I would create a quick post for those who wish to enable LTE on the Samsung Galaxy Note 3 (model: SM-N900W8) where LTE has been crippled. I have compiled the following steps and this should get you up and running without having to ROOT your device, install RECOVERY software or FLASH a new modem.
1) Obtain the device IMEI by pressing *#06# on your dial pad and record this number to reference later.
2) Type in *#272*[IMEI Number]# Where [IMEI Number] is the number you recorded in the step above.
3) You will be prompted with a 3 letter "Regional Settings" menu. Cross reference the 3 letter code with the carrier list at the following link: http://www.samsungis.com/Firmwares/SM-N900W8.html. You do so by hovering over the 3 letter code under the "Region" column. If the SIM you wish to use is from one of these carriers and the carrier supports LTE, we're on our way! The above steps are confirmation, do not modify anything yet!
4) Unlock your device using a preferred unlocking method. Myself, I use http://www.cellunlocker.net which charges $32.99 US for a Samsung Galaxy Note 3 unlock code. It's a reliable site with quick turn-around.
5) Once you receive your unlock code, put in the SIM from the carrier you wish to use and enter the unlock code when prompted.
6) Once unlocked, it may reboot and when at the main menu, follow step 2 and 3 above but this time, select your 3 letter carrier code for the carrier SIM you just inserted then click on OK or INSTALL.
The device will go through a boot up sequence but once complete, you will have LTE enabled. If you do not see this, go into your network settings and you should have the option to select GSM/WCDMA/LTE (auto connect).
Hope this helps those of you wishing to enable the crippled LTE band but do not wish to delve into all the technical jargon related to ROOTING, RECOVERY and FLASHING.
Thanks for this.
Thanks
Thank you for sharing this wonderful trick. I was looking for something like this for a long time.
Please be noted that the secret code *#272*[IMEI Number]# does not exist in many recent models.
You can use Phone INFO ★Samsung★ app > Menu > 'Secret Codes' to check if this code does exist.
THIS WILL ERASE YOUR PHONE...
But it works...

[Q] Samsung Sidekick SGH-T839 Unlocking

Hello everyone,
I have a Samsung SGH- T839 Sidekick, Android 2.2 Froyo OS stuck on T -Mobile USA, I am trying to unlock. I followed the instructions in this forum: " http://forum.xda-developers.com/showthread.php?t=1110263 " .
I think I have managed to unlock since I managed to get the unlocking code in question and to inform . Besides, the message " Network Unlock Successful" appeared on my screen, more and inserting the code " * # 7465625 # ( View Phone Lock Status) " , the " Network Lock" is off.
My problem is that my phone still does not recognize my SIM card ( that of a Méditel Moroccan operator ) and by going to: Settings- > Wireless and network- > Mobile Network , I still have a window under the name "Insert SIM CARD " with the following message : "Insert SIM card to access network services ." Knowing that at any moment I was prompted to enter my PIN.
What to do? Could you help me please ?
Thanking you in advance,
Samsung Sidekick SGH-T839 Unlocking problem
Any suggestions please?
You might be able to request a SIM unlock code from T-Mobile; see http://www.t-mobile.com/Company/CompanyInfo.aspx?tp=Abt_Tab_CompanySimUnlockPolicy. Or maybe try one of the many SIM unlock services available on the Internet; just be careful, because some of them are scams.
I don't understand
Hello,
I don't understant why I should find a new code if, like I said, The Network Lock Status is off?
( " * # 7465625 # ( View Phone Lock Status) " , the " Network Lock" is off. )

Note 3 Secret CODES

Found these codes and tested working on my Note 3 N9005 :
*#06# -- To check IMEI No.
*#9090# -- Diagnostic Configuration
*#1234# -- to check software version of phone.
*#272*IMEI# -- Reset User data + Change Sales Code
*#12580*369# -- to check software and hardware information.
*#0228# -- Battery status (ADC, RSSI reading)
*2767*3855# -- Full factory reset (Don’t dial it does not ask you to confirm unless you have problem)
*#0*# -- This Code shows Screen Test Menu (LCD Test Menu) Hidden Menu
*#7353# -- Self Test Mode (2nd Hidden Menu)
thanks to vndnguyen for the following:
*#34971539# Camera firmware check/update
*#2263# Service Mode - Baseband selection
*#9900# SysDump
*#0011# Service Mode - Radio parameters
*#0808# USB Settings
*#2222# Service Mode - FTA HW Version
*#1111# Service Mode - FTA SW Version
If you have any other code that works, please post it and I will add it here.
Thanks
Good job! Thanks
Sent from my SM-N900 using Tapatalk
I knew most of them but didn't know about the *#7353# 2nd hidden menu. Thanks for the list. If I find any, I'll let you know .
*12580*369# doesn't work for me.
Edit. Miss the #. Lol.
Sent from my SM-N9005 using xda app-developers app
Some other codes that work on my Note 3 (has been tested):
*#34971539# Camera firmware check/update
*#2263# Service Mode - Baseband selection
*#9900# SysDump
*#0011# Service Mode - Radio parameters
*#0808# USB Settings
*#2222# Service Mode - FTA HW Version
*#1111# Service Mode - FTA SW Version
vndnguyen said:
Some other codes that work on my Note 3 (has been tested):
*#34971539#Camera firmware check/update
*#2263#Service Mode - Baseband selection
*#9900#SysDump
*#0011#Service Mode - Radio parameters
*#0808#USB Settings
*#2222#Service Mode - FTA HW Version
*#1111#Service Mode - FTA SW Version
Click to expand...
Click to collapse
The 2222 code doesn't work on my 900T. The rest do, though.
Sent from my leanKernel 2.3 powered stock 4.4.2 SM-N900T
vndnguyen said:
Some other codes that work on my Note 3 (has been tested):
*#34971539# Camera firmware check/update
*#2263# Service Mode - Baseband selection
*#9900# SysDump
*#0011# Service Mode - Radio parameters
*#0808# USB Settings
*#2222# Service Mode - FTA HW Version
*#1111# Service Mode - FTA SW Version
Click to expand...
Click to collapse
*#2263# does not work on mine either, but I will put it in the op... thanks
xdm9mm said:
*#2263# does not work on mine either, but I will put it in the op... thanks
Click to expand...
Click to collapse
Yes, I have tested it on my N9005 XME.
Sent from my SM-N9005 using Tapatalk
---------- Post added at 11:47 AM ---------- Previous post was at 11:13 AM ----------
xdm9mm said:
Found these codes and tested working on my Note 3 N9005 :
*#06# -- To check IMEI No.
*#9090# -- Diagnostic Configuration
*#1234# -- to check software version of phone.
*#272*IMEI# -- Reset User data + Change Sales Code
*#12580*369# -- to check software and hardware information.
*#0228# -- Battery status (ADC, RSSI reading)
*2767*3855# -- Full factory reset (Don’t dial it does not ask you to confirm unless you have problem)
*#0*# -- This Code shows Screen Test Menu (LCD Test Menu) Hidden Menu
*#228# -- ADC Reading (Battery Status)
*#7353# -- Self Test Mode (2nd Hidden Menu
thanks to vndnguyen for the following:
*#34971539# Camera firmware check/update
*#2263# Service Mode - Baseband selection
*#9900# SysDump
*#0011# Service Mode - Radio parameters
*#0808# USB Settings
*#2222# Service Mode - FTA HW Version
*#1111# Service Mode - FTA SW Version
If you have any other code that works, please post it and I will add it here.
Thanks
Click to expand...
Click to collapse
Thanks for the update. Here is some suggestions:
- The code for Battery Status is *#0228#, not *#228#.
- These codes may not work on all devices. For example, on my N9005 XME, the *#272*<IMEI># (change CSC code) does not work. In this case, users can use the 'CSC Changer...' tool in my 'Phone INFO ★Samsung★' app instead (menu --> select 'CSC Changer...').
- You can sort the codes in the list so that they can be easy to find.
Thanks.
vndnguyen said:
Yes, I have tested it on my N9005 XME.
Sent from my SM-N9005 using Tapatalk
---------- Post added at 11:47 AM ---------- Previous post was at 11:13 AM ----------
Thanks for the update. Here is some suggestions:
- The code for Battery Status is *#0228#, not *#228#.
- These codes may not work on all devices. For example, on my N9005 XME, the *#272*<IMEI># (change CSC code) does not work. In this case, users can use the 'CSC Changer...' tool in my 'Phone INFO ★Samsung★' app instead (menu --> select 'CSC Changer...').
- You can sort the codes in the list so that they can be easy to find.
Thanks.
Click to expand...
Click to collapse
thanks, the battery status code is written as *#0228# (edit: I see what you mean, double entry and wrong) ... I will sort the list when it gets longer... I am using your Phone INFO app, it's excellent and full of info, it even knows what color my phone is LOL
*#2263# Service Mode - Baseband selection
Doesn't work on mine either ... odd.
It's one I've been looking for as this was shown elsewhere on the net as *#*#4636#*#*
It allows you to disable / select what type of phone connection you want.
.... but @vndnguyen - I note that your 'missing shortcuts' app does get me there, so thanks for that.
louiscar said:
*#2263# Service Mode - Baseband selection
Doesn't work on mine either ... odd.
It's one I've been looking for as this was shown elsewhere on the net as *#*#4636#*#*
It allows you to disable / select what type of phone connection you want.
.... but @vndnguyen - I note that your 'missing shortcuts' app does get me there, so thanks for that.
Click to expand...
Click to collapse
Yes, the "Testing Menu" entry in the "Missing Shortcuts" app is the code *#*#4636#*#*
vndnguyen said:
Yes, the "Testing Menu" entry in the "Missing Shortcuts" app is the code *#*#4636#*#*
Click to expand...
Click to collapse
That's interesting because that code doesn't work from the dialer .. I wonder why. I did see someone do it on a note 3 in a youtube video but I assumed it might have been the 9000 rather 9005. Mine shouldn't be blocked as it's a sim free phone not tied to any network.
louiscar said:
That's interesting because that code doesn't work from the dialer .. I wonder why. I did see someone do it on a note 3 in a youtube video but I assumed it might have been the 9000 rather 9005. Mine shouldn't be blocked as it's a sim free phone not tied to any network.
Click to expand...
Click to collapse
Yes that code doesn't work because Samsung did block it, but the function is still there.
My app just provides a shortcut to this function.
secret code
Is there any secret code that detect or calculate number of unautorized spy phone software connections? Thanks!
Hi,
You can get all available secret codes in your device by using Shortcut Master app --> 'Secret Code Explorer' menu.
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xdm9mm said:
Found these codes and tested working on my Note 3 N9005 :
*#06# -- To check IMEI No.
*#9090# -- Diagnostic Configuration
*#1234# -- to check software version of phone.
*#272*IMEI# -- Reset User data + Change Sales Code
*#12580*369# -- to check software and hardware information.
*#0228# -- Battery status (ADC, RSSI reading)
*2767*3855# -- Full factory reset (Don’t dial it does not ask you to confirm unless you have problem)
*#0*# -- This Code shows Screen Test Menu (LCD Test Menu) Hidden Menu
*#7353# -- Self Test Mode (2nd Hidden Menu)
thanks to vndnguyen for the following:
*#34971539# Camera firmware check/update
*#2263# Service Mode - Baseband selection
*#9900# SysDump
*#0011# Service Mode - Radio parameters
*#0808# USB Settings
*#2222# Service Mode - FTA HW Version
*#1111# Service Mode - FTA SW Version
If you have any other code that works, please post it and I will add it here.
Thanks
Click to expand...
Click to collapse
None of these codes work for my unlocked Verizon Galaxy note 3 running 4.4.4
quick Q
back to the start or just the last flash ?
*2767*3855# -- Full factory reset (Don’t dial it does not ask you to confirm unless you have problem)
thank
oldyin said:
quick Q
back to the start or just the last flash ?
*2767*3855# -- Full factory reset (Don’t dial it does not ask you to confirm unless you have problem)
Click to expand...
Click to collapse
it will not perform the task until you complete the whole command.... that includes the last # (hash)
xdm9mm said:
it will not perform the task until you complete the whole command.... that includes the last # (hash)
Click to expand...
Click to collapse
tried it but never worked on my n9005 so i just flashed the old H3G 4.4.2 then let it update in kies before re-rooting it =]
thanks for the reply tho :good:

How To Guide 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 with more information added.
Which bands can be enabled this way?
All bands the phone supports in hardware can be enabled through the service menu. For the S22 Ultra, that includes all Sub-6 bands like n78, and mmWave bands, as well as 5G SA bands, as shown in this screenshot below.
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Which phones does this method support?
This method has been confirmed to work on:
Samsung S22 Ultra (S908U, S908U1, S908W).
Galaxy Z Fold 4. Thanks @Abaddon.
This method works on both Android 12 (One UI 4.1) or Android 13 (One UI 5.0 beta).
This method requires your device be on the US firmware (XAA or other US CSC), so as long as you can Odin flash XAA firmware on your device (such as Canadian variant), you should be able to do this.
If you get this method working on your phone that isn't in the known list, post it here and I will add it to the list above.
How To Guide
You will need a Windows computer (or VM) and the Samsung USB Driver installed to do the following steps. Install the USB driver from here before proceeding if you do not have it installed.
A. Flash US Firmware
First, your device must be on US firmware (XAA or other CSC). You can skip this step and go to B if your device is already on US firmware.
If you're not on a US firmware because you have another Snapdragon variant (like Canadian), follow the steps below to flash XAA firmware. Note this will WIPE and FACTORY RESET your device. ALL DATA WILL BE LOST. So backup if you need to.
Download Odin 3.14.4 or latest version.
Download US XAA U1 firmware for your device from SamMobile.com or SamFw.com. For example, for the S22 Ultra, download the XAA firmware for S908U1. Extract the contents of the firmware to somewhere on your computer. You should have 5 files (BL, AP, CP, CSC, HOME_CSC). We won't use HOME_CSC.
Restart your phone and go into download mode. On the S22 Ultra, hold all three power and up + down volume at the same time until the phone starts, then press the up volume key to get into download mode.
Open Odin and connect your phone to your computer with a USB. Odin should say your phone was added.
Click each of the BL, AP, CP, CSC buttons and select the corresponding files from the firmware zip you extracted. For CSC, use the file that starts with CSC and not HOME_CSC (we won't be using HOME_CSC). Do not load anything into USERDATA.
Click start and let it flash the firmware (see the picture below). If it flashed correctly, your phone will be on XAA firmware after it restarts and you will have to set it up again from scratch.
Set up your phone and verify it is on XAA firmware by going to Settings -> About Phone -> Software information -> check that it says XAA/XAA,XAA/OOO under "Software provider software version". OOO here will be your phone's original CSC like XAC which you cannot change and do not need to.
B. Unlock Service Menu Secret Codes
The next step is we need to unlock access to the service menu. Usually this is locked by default, but it might already be unlocked for you.
First check if you can access the service menu by trying each of these ways:
Open dialer and enter *#27663368378# to try to get directly into the service mode main menu. The menu should open after you press the last # character, you shouldn't have to press call.
Open dialer and enter *#73# to get into RF Test mode. Press Band Selection. Press three dots on top right -> Back. Repeat three dots -> back three more times until you get to the service mode main menu.
If either of the above ways works for you to get to the service mode main menu, then you can skip the below steps to unlock the menu and go directly to instructions C.
If you cannot access the menu with the above codes, then follow these instructions to unlock the secret codes.
Enable USB Debugging in Developer menu.
Download SamFW FRP tool 3.1 or latest version from here.
Open SamFW FRP tool and connect your phone to the computer with a USB.
Using SamFW FRP tool, go to MTP tab and click on "Enable Secret Code for Verizon". See the picture below. Note it works on any US CSC even though it says "for Verizon".
If in the program output you see it's getting stuck on "Waiting for DIAG", then dial *#0808# on your phone to open USB settings and select "DM + MODEM + ADB" then press OK. The program should then complete the step and then get stuck on "Disabling DIAG". When it does, using the *#0808# menu again, select "MTP + ADB" this time and press OK. Now the program should complete the step and say that secret codes was unlocked.
Now you should be able to use *#73# for RF test, *#27663368378#* to go directly to service menu. Test it to make sure the codes work and the service menu is opening.
C. METHOD 1: Use the Service Menu to Unlock All Bands
Enter the service menu using either way.
Open dialer and enter *#27663368378# to get directly into the service mode main menu.
Open dialer and enter *#73# to get into RF Test mode. Press Band Selection. Press three dots on top right -> Back. Repeat three dots -> back three more times until you get to the service mode main menu.
Use the service mode to set the following options. Note you can go back between screens with three dots -> back for quicker navigation, but I am just starting each option below from the main menu so it's easy to read.
Enable all LTE and 5G bands.
Service Mode Main Menu -> UE SETTING & INFO -> SETTING -> SYSTEM -> Next page 4 times -> SET LTE BAND CONFIG -> SET DEFAULT LTE BAND.
Service Mode Main Menu -> UE SETTING & INFO -> SETTING -> PROTOCOL -> NR5G -> NR5G PRUNE STATUS -> REMOVE NR5G PRUNE.
Service Mode Main Menu -> UE SETTING & INFO -> SETTING -> PROTOCOL -> GCF -> REMOVE ONLY NR WHITELIST.
Optional if you need to enable mmWave bands: Service Mode Main Menu -> UE SETTING & INFO -> SETTING -> PROTOCOL -> NR5G -> Sub6/mmWave -> ALL ENABLE.
Optional if you have issues going from LTE to LTE+ (carrier aggregation not working properly): Service Mode Main Menu -> UE SETTING & INFO -> SETTING -> PROTOCOL -> AS -> Next Page -> DISABLE CA COMBO CHECK -> DISABLE ON.
Enable 5G NR features (DSS & CDRX) if needed. These options might already be enabled for you by default.
Service Mode Main Menu -> UE SETTING & INFO -> SETTING -> PROTOCOL -> AS -> Next Page -> NR CDRX CONTROL -> NR CDRX ENABLE. NR CDRX is 5G power saving mode.
Service Mode Main Menu -> UE SETTING & INFO -> SETTING -> PROTOCOL -> AS -> Next Page 2 times -> NR DSS CONTROL -> NR DSS ENABLE. NR DSS is 5G Dynamic Spectrum Sharing.
Enable 5G SA if you're lucky enough to have a carrier with standalone 5G networks. This option might be enabled by default already.
Service Mode Main Menu -> UE SETTING & INFO -> SETTING -> PROTOCOL -> NR5G -> NR5G SA/NSA Mode Control -> SA/NSA ENABLE.
Service Mode Main Menu -> UE SETTING & INFO -> SETTING -> PROTOCOL -> NR5G -> NR5G SA/NSA Mode Control -> Remove SA permit list.
Service Mode Main Menu -> UE SETTING & INFO -> SETTING -> PROTOCOL -> NR5G -> Next Page -> NR5G NRDC -> NRDC ENABLE. NRDC is for dual connectivity with Sub6 + mmWave bands in parallel. Only applies to 5G SA networks and only if your carrier uses it.
Restart your phone, then dial *#73# to get into RF Test Mode. Click Band Selection -> Sim 1 or Sim 2 (whichever you use). On this screen if you scroll down, you'll see a list of enabled NR5G bands. Make sure all bands are enabled. See my picture below.
NOTE: Band selection won't be reset with a reboot, but might be reset after a CSC update (or a software update that includes a CSC update). You will have to re-do the service menu settings every update or re-flash of a CSC.
NOTE: If you use an eSIM or a dual-SIM phone with a 2nd SIM, you need to change the NR5G stack before changing the NR5G related options above. Change the NR5G stack to Stack 2 with the following setting first.
Service Mode Main Menu -> UE SETTING & INFO -> SETTING -> PROTOCOL -> NR5G -> NR5G STACK SELECTION -> Select STACK 2.
OPTIONAL: Now that all bands are enabled and usable, you can use the Band Selection menu under *#73# to selectively disable certain bands if you need to. This is not covered here but that menu is self-explanatory.
If this method isn't working, try METHOD 2 below. You do not need to try METHOD 2 if this method ended up working for you.
D. METHOD 2: Unlock all bands via Protocol Simulation menu.
If METHOD 1 above didn't work or not all bands were unlocked, you can try to unlock all bands by simulating a change in your CSC to GCF (Global Certification Forum). This won't actually change your CSC to GCF, but will change the options in the service menu as if you were on GCF CSC, which should give you access to all SA and NSA bands. Credits to @wr3cckl3ss1 for figuring out this method.
To do this method, first enter the service mode main menu using either of the following ways.
Open dialer and enter *#27663368378# to get directly into the service mode main menu.
Open dialer and enter *#73# to get into RF Test mode. Press Band Selection. Press three dots on top right -> Back. Repeat three dots -> back three more times until you get to the service mode main menu.
Using the service menu, change the following options
Go to: Service Mode Main Menu -> PROTOCOL STATE -> PROTOCOL SIMULATION -> IMEI PRE CFG SIMULATION.
In this menu, click [1] AP, then click GCF (last option). Then click [2] NET1 and change it to GCF as well. Do the same for [3] NET2. All GCF.
Press [4] Write. Then restart phone.
Check if all SA bands were unlocked. If not, repeat the band unlocking instructions from METHOD 1 above and then restart the phone and check again.
Enjoy your unlocked LTE and 5G bands!
FYI, I have personally tested this on a Canadian S908W on XAA firmware to enable 5G in Canada. In fact, I was even able to update to One UI 5.0 using the adb sideload method since I was on XAA firmware, and then I repeated the steps above to enable all 5G bands on the beta (service menu was still unlocked). So now I have 5G on One UI 5.0 beta in Canada! The trifecta!
CREDITS
@mellojosh for his guide on service menu band options on the S20U1.
@wr3cckl3ss1 for his guide on selecting bands from the dialer for the S22 series phones, and for instructions on protocol simulation.
@bigdave79 for reminding me about needing the Samsung USB Driver for this to work.
Excellent job sir.
i'm on android 13 beta2 on unlocked s22 ultra.
after i click on "DM + MODEM + ADB" then ok,
it' still stuck at Waiting for DIAG....
Great effort man, Thank you.
but this will not work on variants like S908N Korea or the S9080 China correct ?
netnerd said:
i'm on android 13 beta2 on unlocked s22 ultra.
after i click on "DM + MODEM + ADB" then ok,
it' still stuck at Waiting for DIAG....
Click to expand...
Click to collapse
Which CSC are you using and which model (S908U1)?
When I tested this, I unlocked the secret codes first on Android 12, then upgraded to Android 13 and secret codes still worked. I'm not sure if you can unlock it directly on Android 13.
Are you willing to downgrade to Android 12 first to try?
Mem_0 said:
Great effort man, Thank you.
but this will not work on variants like S908N Korea or the S9080 China correct ?
Click to expand...
Click to collapse
Can you flash US firmware on the Korean and Chinese variants with Odin (normal or patched)? If you can get on US firmware, then it might work. I do not think it will work on other firmwares.
peacey8 said:
Can you flash US firmware on the Korean and Chinese variants with Odin (normal or patched)? If you can get on US firmware, then it might work. I do not think it will work on other firmwares.
Click to expand...
Click to collapse
I don't think that's possible as the pit files are different.
peacey8 said:
Can you flash US firmware on the Korean and Chinese variants with Odin (normal or patched)? If you can get on US firmware, then it might work. I do not think it will work on other firmwares.
Click to expand...
Click to collapse
till now there is no way to flash US on a Korean
Mem_0 said:
till now there is no way to flash US on a Korean
Click to expand...
Click to collapse
peacey8 said:
Can you flash US firmware on the Korean and Chinese variants with Odin (normal or patched)? If you can get on US firmware, then it might work. I do not think it will work on other firmwares.
Click to expand...
Click to collapse
The only Snapdragon variant that has the same pit file as S908U/S908U1....is the S908N. But to no avail. It fails.
wr3cckl3ss1 said:
The only Snapdragon variant that has the same pit file as S908U/S908U1....is the S908N. But to no avail. It fails.
Click to expand...
Click to collapse
why does it fail ? bec of different pit files ?
The pit files are what partition the device. And....
S908U/S908U1/S908N have B0Q_USA_SINGLEW
S908E - B0Q_GBL_OPEXX
S908W- B0Q_CAN_SINGLEX
And even if you were to get it to flash. That still won't unlock the bootloader. Just an FYI.
I have made a lot of research and failure tries trying to change the CSC of the S908N I have from KTC to KOO, but every time it fails using Samkey or even Samfw, after further looking they said that Samsung had blocked the Korean variants starting from S21 I guess.
wr3cckl3ss1 said:
The pit files are what partition the device. And....
S908U/S908U1/S908N have B0Q_USA_SINGLEW
S908E - B0Q_GBL_OPEXX
S908W- B0Q_CAN_SINGLEX
And even if you were to get it to flash. That still won't unlock the bootloader. Just an FYI.
Click to expand...
Click to collapse
I don't want to unlock the bootloader at the moment, I just want to change csc at first to KOO instead of KTC and after that maybe install international software.
peacey8 said:
Which CSC are you using and which model (S908U1)?
When I tested this, I unlocked the secret codes first on Android 12, then upgraded to Android 13 and secret codes still worked. I'm not sure if you can unlock it directly on Android 13.
Are you willing to downgrade to Android 12 first to try?
Click to expand...
Click to collapse
yes, I'm on s908U1 with FKR/FKR, TMB/XAA (Visible wireless on sim, tmobile on esim).
if i downgrade to Android 12, will it wipe my data? i really don't wanna wipe my phone
netnerd said:
yes, I'm on s908U1 with FKR/FKR, TMB/XAA (Visible wireless on sim, tmobile on esim).
if i downgrade to Android 12, will it wipe my data? i really don't wanna wipe my phone
Click to expand...
Click to collapse
Yes it might wipe your phone, I'm not sure. I wouldn't risk it without backing up first.
I haven't tested this on FKR. So if it doesn't work for you on Android 12, use SamFW FRP Tool to change your CSC to XAA when you're on Android 12. Then it should definitely work.
Thanks for this.
Question: if I'm on att or TMOB, does this unlock more useable bands for me?
netnerd said:
i'm on android 13 beta2 on unlocked s22 ultra.
after i click on "DM + MODEM + ADB" then ok,
it' still stuck at Waiting for DIAG....
Click to expand...
Click to collapse
I'm having the same issue and I'm on Android 12.
EDIT: I'm an idiot. I did not have the Samsung Android USB drivers installed. Tried it again and now it works!
ekerbuddyeker said:
Thanks for this.
Question: if I'm on att or TMOB, does this unlock more useable bands for me?
Click to expand...
Click to collapse
The phone already comes with all almost all the bands already. This guide just shows you how to enable them all.
Has anyone had any luck, I followed all the step to the T, but it still stuck on "waiting for DIA".
Running androind 12 / SM-S908U1
canada S22U
formula666 said:
Has anyone had any luck, I followed all the step to the T, but it still stuck on "waiting for DIA".
Click to expand...
Click to collapse
Install Samsung Android USB drivers from here.

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