***Tested on S908U & S908U1***
But not limited, to those specific models. S22 Family should also be compatible as well...as the NEW FOLD 4. Thanks @Abaddon
BAND SELECTION:
To ENABLE all bands, please do the following:
(See pictures attached for context)
Step 1. Go to Samsung Dialer......dial * # 73 #
Step 2. You should see ServiceMode > RF TEST.....choose Option 1: Band Selection
Step 3. Here is the part where you might be different from the rest, like I am. I use dual-sim. Now depending on who you use as your main service provider, in my case VZW. I know that VZW is my esim and also known as SIM 2. Here if I wanted to enable all bands for VZW, I would choose Option 2 and if I wanted to choose my other provider, TMB, I would choose Option 1. Those that don't have dual sim will normally just have one option which will be SIM 1. If that's you, just press SIM 1 and continue.....
Step 4. Now you've made it to the most important step here. Enabling the Bands.
As tempting as it might be. If you don't know what anything does. Don't press it. And if you accidentally press something by mistake. Restart your phone ASAP and start over. Trust me when I say, I've tested everything here. I have. That's no lie or joke. Because of my testing in the Service Menu....I disabled my radio for two days until I figured out how to get it back thru various tips and tricks from multiple guides and sites. So, please if you wanna be brave, do it on your time and don't come to community to ask for help off of something you did. The community is here for those who have actual problems not people who have problems because stupidity and pure ignorance. Now back to the last step.....
Step 4 (continued)
Here, you may or may not have the same check marks as I but in the end its not going to matter.
Start by pressing Option 7: Clear ALL Bands.....I normally press it twice just to be sure.
And when pressed, the check marks should disappear. Now you may or may not have this option checked after everything was already unchecked but...Option A (Block Set By AP)...should be left unchecked. Like in the picture I've attached.
Now press Option 8 (twice) this is where I discovered that the second time you push something.....it added more. Try it. Watch what it does the first time you press Option 8....then watch again when u press it the second time.
Now you should see check marks back up where they have disappeared.
Press Option 9: Apply Band Configuration.
You'll now see APPLY DONE
Go to three dots in the top right corner.....press KEY INPUT
Youll see a little screen.....tap on the line and type " 0 " (zero)...hit Ok and you should be golden....
I do this frequently because I flash my S908U constantly testing different things I see....testing possible exploits. To my knowledge a restart shouldn't reset these settings but if they do. It shouldn't take but a few seconds to re-enable everything again. I can do this without looking at my phone now because of how many times I've flashed this S908U. So good luck and if anyone has any input, sees any mistakes or wants to add to this guide shoot me a DM and let me know.
***CSC CHANGE***
Active on current BETA 1, BETA 2, AVHB, and all previous months up to MAY.
Tested and Re-Tested on S908U & S908U1.
As it stands S22 Family is compatible. If you do not get desired results, read thru the thread to find your answer and for troubleshooting (*Currently away on business, limited to answering posts and DMs)
To Change your CSC, do the following,
1. Go to SamFw.com (it's a reputable Samsung firmware site)
2. Look for the SamFW FRP Tool v3.1 (don't worry about the FRP thing, you are not going to use it)
3.Download and extract, Run as Admin
4.Connect phone and the app should read it. Should say Samsung modem (COM___) >>> Left a blank on the COM because everyone is different, depending on what port you connect the phone.
5. To be sure everything is ready to run well, there's a tab labeled ADB. Click it and inside there's an option for INFO, click that and it will read your phone and display you're phone's vitals.
6. After you're done, go to the tab labeled TEST. Inside you'll see various options. The last one being Change your CSC and a blank box.
7. Here is where you have to do a little research for now. ( I'll update what CSCs are inside when I get home in 2 weeks) S908U had one set of CSCs and S908U1 has a larger one. Depending on what you want, figure out first if your firmware has that specific CSC. (For example, if you have S908U VZW completely stock and you want to change it to a CSC that's foreign, for instance like XXV or INS, you're out of luck, it won't happen.) So do you're research. There's a thread here on XDA that can give you that knowledge without leaving the site.
**EDIT** 9-4-22
PLEASE refer yourselves to this post and thread to see what possible CSCs are in your firmware. Many thanks to @yakapa40 for all the information and because of this thread....gave me inspiration to find out more about CSCs...Bands....etc. Make sure to give him a thumbs up.
Samsung CSC galaxy S22 SM-S908B and SM-S908E
CSC_OXM_S908BOXMxxxx_xxxx_REVxx_user_low_ship_MULTI_CERT.tar.md5.zip = Home_CSC _OXM_S908BOXMxxxx_xxxx_REVxx_user_low_ship_MULTI_CERT.tar.md5.zip + pit file pit : partition information table: at this time nobody know how to resign a custom...
forum.xda-developers.com
8. In the blank box, type the new CSC you would like to use. When changing the CSC there's many things that can change. Your boot screen and certain carrier apps will be removed and/or added. Also if you, for instance are like me and use Verizon as your carrier, you will lose Verizon Visual voicemail and other certain "carrier bands" but there's a fix for that, read thru the thread carefully.
9. Follow the prompts and do what the app says. When it's complete, your phone will restart and you may or not be greeted with a new boot screen depending on what you chose.)
10. To check if everything went well, go to Settings....About Phone.... Software Information and look at the Service Provider. You will see your new CSC displayed. The last CSC should be your carrier CSC. That you can't change without ROOT. So don't worry about it. Now you're done. Enjoy! For any troubleshooting please go thru the thread and read or do a search. Please don't clog up the thread if you choose not to read and ask the same question over and over. The community is already flooded with many people doing the same thing over and over. You don't need to add to it. And if you have a specific issue, please send me a DM and I'll see where I can help you out when I have time.
Credits
@Abaddon
@peacey8
@PapaDocta
@wschofield
@yakapa40 (For CSC knowledge and information)
For a MORE PROPER GUIDE on BAND SELECTION and some TROUBLESHOOTING please refer to post #15
Enable & Select Bands thru Dialer (S22 Fam) /CSC CHANGE (S22 & MORE)
***Tested on S908U & S908U1*** But not limited, to those specific models. S22 Family should also be compatible as well...as the NEW FOLD 4. Thanks @Abaddon BAND SELECTION: To ENABLE all bands, please do the following: (See pictures attached...
forum.xda-developers.com
Or this guide....If you like you can take info from both and use it at your discretion. BOTH guides have different views but overall the same techniques.
Once again a huge THANK YOU to @peacey8 for this excellent 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...
forum.xda-developers.com
DISCLAIMER
The information here is AS IS, what you decide to do with it, it's up to you. If you choose to use this information and somehow "break" something. Please be prepared to give a direct recounting as to what lead to your situation and also be prepared for any amount of questions, that may come. The community is here to help those in need. Not to engage or applaud laziness, ignorance or any sort of mis-doing. You're obviously here for a reason, so stick to it. Have fun...and learn.
**Edited 9-4-22**
This is great, thank you man..
Appreciate all the hard work!
Unlocked T-mobile U device here and typing *#73 or *#73# followed by the green dial button shows as "Non-existing short code"
Sharing my exp.
I have a u1 unlocked device bought from samsung us website.
I was on TMo but the code does not work, so I clean flashed the vzw firmware with data from odin then used the samfw tool to unlock all secret codes then tested if its working then switched my csc to gcf, tried the code and it still works. Now I'm happy to use 5G outside the U.S.
Thanks again for the help and tips via dm
when dialing *#73# i am getting error connection problem or invalid MMI code
It must be go to service menu right after you dial # but nothings happen. You dont need to press green dial button.
dj24 said:
Unlocked T-mobile U device here and typing *#73 or *#73# followed by the green dial button shows as "Non-existing short code"
Click to expand...
Click to collapse
Can you post a screenshot of your software information?
KKYASIR said:
when dialing *#73# i am getting error connection problem or invalid MMI code
Click to expand...
Click to collapse
What's your device? And what firmware are you on?
wr3cckl3ss1 said:
Can you post a screenshot of your software information?
Click to expand...
Click to collapse
dj24 said:
View attachment 5695505
Click to expand...
Click to collapse
That's odd. You have a T-Mobile S22 Ultra variant. *#73# should work without any problem. And I'm guessing your on this month's current firmware?
dj24 said:
View attachment 5695505
Click to expand...
Click to collapse
I can switch my CSC to TMB right now and *#73# comes up right away. Would you be opposed into trying something else...like changing your CSC?
wr3cckl3ss1 said:
Can you post a screenshot of your software information?
Click to expand...
Click to collapse
So you have a S908E. This method has only been tested on S908U and S908U1 models.
Echoing what @Abaddon said, if the *#73# code doesn't work for you, you can enable the code by switching to VZW CSC first then using SamFW FRP tool to unlock secret codes, then you can switch back to XAA or any other CSC with FRP tool and the code will still work.
So basically, the steps to enable secret codes are:
Start on XAA (or VZW) U1 firmware and enable debugging in Developer menu.
Use SamFW FRP tool to change to VZW CSC if you're on XAA or other CSC. Phone will reboot.
Using SamFW FRP tool, go to MTP -> Enable Secret Code for VZW.
Now you should be able to use *#73# for RF test, or any other secret code (like *#27663368378#* to go directly to service menu).
Switch back to XAA CSC using SamFW FRP tool if needed, and make sure *#73# is still working.
Though, I couldn't get all bands enabled even with having access to this code and following OP's instructions. The bands were still limited to XAA bands, even after pressing Enable twice. However, I was able to enable ALL 5G bands, including mmWave, by using the service menu (credits to this post). You can try these instructions if OP's instructions didn't unlock all bands for you:
Enter the service menu. There's a couple of ways to do this.
Open dialer and enter *#27663368378# to get directly into the service mode main menu.
Open dialer and enter *#73# (OP's code) 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 too: 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 live in a country 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.
Restart your phone, then dial *#73# to get into RF Test Mode. Click Band Selection -> Sim 1 or 2 (whichever you use). On this screen if you scroll down, you'll see a list of enabled NR5G bands like in OP's picture. Make sure all bands are enabled. See my picture below, or OP's picture above (OP's picture is only missing four mmWave bands).
Note that 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 settings every update.
This worked for me on XAA firmware to enable 5G in Canada on my S22U. 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 (secret codes still worked after beta update, but bands got reset after update). So now I have 5G on One UI 5.0 beta in Canada! The trifecta!
Thank you very much @wr3cckl3ss1 for the instructions above, @Abaddon for the key information about VZW firmware needded to unlock secret codes, and @mellojosh for the service menu instructions to change bands.
peacey8 said:
Echoing what @Abaddon said, if the *#73# code doesn't work for you, you can enable the code by switching to VZW CSC first then using SamFW FRP tool to unlock secret codes, then you can switch back to XAA or any other CSC with FRP tool and the code will still work.
So basically, the steps to enable secret codes are:
Start on XAA (or VZW) U1 firmware and enable debugging in Developer menu.
Use SamFW FRP tool to change to VZW CSC if you're on XAA or other CSC. Phone will reboot.
Using SamFW FRP tool, go to MTP -> Enable Secret Code for VZW.
Now you should be able to use *#73# for RF test, or any other secret code (like *#27663368378#* to go directly to service menu).
Switch back to XAA CSC using SamFW FRP tool if needed, and make sure *#73# is still working.
Though, I couldn't get all bands enabled even with having access to this code and following OP's instructions. The bands were still limited to XAA bands, even after pressing Enable twice. However, I was able to enable ALL 5G bands, including mmWave, by using the service menu (credits to this post). You can try these instructions if OP's instructions didn't unlock all bands for you:
Enter the service menu. There's a couple of ways to do this.
Open dialer and enter *#27663368378# to get directly into the service mode main menu.
Open dialer and enter *#73# (OP's code) 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 too: Service Mode Main Menu -> UE SETTING & INFO -> SETTING -> PROTOCOL -> NR5G -> Sub6/mmWave -> ALL ENABLE.
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 live in a country 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.
Restart your phone, then dial *#73# to get into RF Test Mode. Click Band Selection -> Sim 1 or 2 (whichever you use). On this screen if you scroll down, you'll see a list of enabled NR5G bands like in OP's picture. Make sure all bands are enabled. See my picture below, or OP's picture above (OP's picture is only missing four mmWave bands).
This worked for me on XAA firmware to enable 5G in Canada on my S22U. 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 (secret codes still worked after beta update, but bands got reset after update). So now I have 5G on One UI 5.0 beta in Canada! The trifecta!
Thank you very much @wr3cckl3ss1 for the instructions above, @Abaddon for the key information about VZW firmware needded to unlock secret codes, and @mellojosh for the service menu instructions to change bands.
View attachment 5695721
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Wow this is a way more cleaner guide than mine. Props to you bro. Wanna make mine cleaner and also add yours...or just make a more precise one with both info added in? Not opposed to it at all. One thing I can add is that, even though the SamFW app says ENABLE VERIZON SECRET CODE.....I'm sure that it works on others besides Verizon.
To be honest, I'm kind of shocked that there's not many people who don't know about SamFW's app. I'll be the first to say that when I saw FRP tool. It steered me away. I am a million percent against any sort of theft or any kind of fraud but for the sake of research and because it's my phone. I tried it anyways and found out it's capabilities. Now I will tell you this. Even though it's a very good app. It's only a matter of time before Samsung patches this and the app is rendered useless. It may or may not happen. Just trying to let everyone know. I'm no expert and/or DEV. I'm just an average guy that likes to mess around with phones.
wr3cckl3ss1 said:
Wow this is a way more cleaner guide than mine. Props to you bro. Wanna make mine cleaner and also add yours...or just make a more precise one with both info added in? Not opposed to it at all. One thing I can add is that, even though the SamFW app says ENABLE VERIZON SECRET CODE.....I'm sure that it works on others besides Verizon.
Click to expand...
Click to collapse
Thanks! I was just trying to add more info, didn't want to replace your guide.
Regarding VZW secret code, have you tried to enable secret code with FRP tool on other CSC before? Because I was on XAA, and tried but the tool got stuck on "Waiting for DIAG". I tried multiple times and it didn't work. When I changed to VZW CSC and tried again, it worked perfectly the first time and codes were still enabled even after changing CSC again. So I was thinking VZW CSC specifically has some code that FRP tool uses which ends up changing some NVRAM parameter to enable secret codes, and other CSCs don't touch this parameter (so it ends up staying that way even when switching CSC). Just guessing.
peacey8 said:
Thanks! I was just trying to add more info, didn't want to replace your guide.
Regarding VZW secret code, have you tried to enable secret code with FRP tool on other CSC before? Because I was on XAA, and tried but the tool got stuck on "Waiting for DIAG". I tried multiple times and it didn't work. When I changed to VZW CSC and tried again, it worked perfectly the first time and codes were still enabled even after changing CSC again. So I was thinking VZW CSC specifically has some code that FRP tool uses which ends up changing some NVRAM parameters, and other CSCs don't touch this (so it ends up staying that way even when switching CSC)
. Just guessing.
Click to expand...
Click to collapse
So...this so called part that says it's enabling DIAG mode is nothing more than just changing your USB connection (to my knowledge). I can change that without the app using a different dialer code (see pic attached). Send me a DM and I'll explain more. Don't need a bunch of fools trying this stuff and then complaining or crying.
KKYASIR said:
when dialing *#73# i am getting error connection problem or invalid MMI code
Click to expand...
Click to collapse
Same. In on Verizon.
Related
If you dial this code number *#197328640# into your phone dial pad you can get to a hidden service menu. (note: use the lower left button to go back each time you select something, otherwise you have to dial the whole number again.)
On my International SGS3 (GT-i9300) I can go in here and select different data frequencies by going to UMTS -> Debug Screen -> Phone Control -> Network Control -> Band Selection. There is other data as well, though this AT&T one seems to have less info in there.
*you are at your own risk if you play around and change things in these menus!*
What does different frequencies do?
Sent from my SAMSUNG-SGH-I337 using xda premium
thanks for the info, i wonder if the T-Mobile one will have the AT&T LTE frequencies
I have a friend using a Sprint Samsung Galaxy S5 that was recently SIM unlocked for international use. We also have a SIM card (egsimcard.co.kr) which has worked for me 4 times in the past year, across various phones. The 3G network (which runs on KT/Olleh) is UMTS 2100, which should work with the SM-G900P (at least according to willmyphonework.net).
We confirmed that the phone said "invalid SIM card" before the unlock, and there is no such message after the unlock. However, the About Phone screens still show the phone number associated with the CDMA profile of the device, even after we switch the phone to GSM/UMTS mode and reboot. It's like we can't make actually make it work in GSM/UMTS mode.
Does anyone have any advice to make this work?
(She is in South Korea now and needs help ASAP, currently renting a phone and wifi hotspot, but would prefer not to.)
We also tried setting the APN and manually searching for the network, but it's all theoretically moot if the phone isn't picking up the phone number on the SIM.
We've even tried the Phone Info menu at *#*#INFO#*#* but there's no access to that running stock ROM.
shoot, i totally missed this post. i always seem to miss the time sensitive ones. Anyways did you go into more networks/mobile networks/network operators and register on the gsm network? you might have to go into the GCF settings on the phone to allow for GSM connections, this can be done with the following steps
Dial *#0011# and in the service menu do the following
Click (menu) then (key input) then input Q then (Ok)
Click (menu) then (back)
Click (menu) then (key input) then input 0000 then click (Ok)
Wait for about 15 seconds then a menu will pop up, from there follow these procedures:
[2] UE Setting & Info >
[1] Setting >
[1] Protocol >
[4] GCF >
[1] GSM/(E)GPRS/WCDMA GCF ON
It will say "success", please reboot via the phone’s power menu after the confirmation.
Thanks to paolotheking and this thread about an important secret code for the Velvet and other devices:
LG Velvet Hidden Menu code
Enjoy: #*462633*#900# Works with G900EM
forum.xda-developers.com
I could finally activate the 5G network capability of my phone.
I have a Dutch (NLD) genuine SIM unlocked Velvet LM-G900EM with latest Android 11 v20d-EEA-XX installed.
If you hit with the phone dialpad this sequence:
#*462633*#900#
it will lead you to a hidden menu where you can find all sort of information and tweaking options.
You have to choose "Field Test", then "Modem settings". You will have here many things you can change. Go to "RAT Selection", it will give you many more options than the ones you find under the regular "Network settings".
I tested here first "LTE(5G NSA) Auto" and it instantly made the 5G icon appear in the task bar! So I then hit the "GSM/WCDMA/LTE(5G NSA) Auto" option. I now have up to 5G automatic network selection!
Only issue is that under the regular Network settings, "Preferred network" states now "26" and if I want to see what other options you have, it only lists the options up to 4G preferred and it will go back to 4G maximum. So you have to go through the hidden menu again to activate it.
I also tested that if you power off the phone, 5G maximum stays activated when you power on the phone again, good to know.
You may also try to tweak your 5G bands by selecting them in the corresponding menu "Band Selection" in the "Field Test", "Modem Settings". Some of them might not really work though, as it might be hardware related depending on your model.
Hopefully it can help people finally being able to use the 5G network of their provider with the Velvet, and possibly other LG 5G phones like the V50(S) V60, Wing. You just have to put your model number at the end of the secret code ...#900# for the Velvet, ...#510# for the V50S ...#100# for the Wing, aso, if I understood it good.
Edit: works for the LG Wing too, just tested it!
Vuche said:
Thanks to paolotheking and this thread about an important secret code for the Velvet and other devices:
LG Velvet Hidden Menu code
Enjoy: #*462633*#900# Works with G900EM
forum.xda-developers.com
I could finally activate the 5G network capability of my phone.
I have a Dutch (NLD) genuine SIM unlocked Velvet LM-G900EM with latest Android 11 v20d-EEA-XX installed.
If you hit with the phone dialpad this sequence:
#*462633*#900#
it will lead you to a hidden menu where you can find all sort of information and tweaking options.
You have to choose "Field Test", then "Modem settings". You will have here many things you can change. Go to "RAT Selection", it will give you many more options than the ones you find under the regular "Network settings".
I tested here first "LTE(5G NSA) Auto" and it instantly made the 5G icon appear in the task bar! So I then hit the "GSM/WCDMA/LTE(5G NSA) Auto" option. I now have up to 5G automatic network selection!
Only issue is that under the regular Network settings, "Preferred network" states now "26" and if I want to see what other options you have, it only lists the options up to 4G preferred and it will go back to 4G maximum. So you have to go through the hidden menu again to activate it.
I also tested that if you power off the phone, 5G maximum stays activated when you power on the phone again, good to know.
You may also try to tweak your 5G bands by selecting them in the corresponding menu "Band Selection" in the "Field Test", "Modem Settings". Some of them might not really work though, as it might be hardware related depending on your model.
Hopefully it can help people finally being able to use the 5G network of their provider with the Velvet, and possibly other LG 5G phones like the V50(S) V60, Wing. You just have to put your model number at the end of the secret code ...#900# for the Velvet, ...#510# for the V50S ...#100# for the Wing, aso, if I understood it good.
Edit: works for the LG Wing too, just tested it!
Click to expand...
Click to collapse
Where U buy this velvet LM-G900EM Unlocked.I need One.Am From India.I Searched eBay & amazon but this specific model not available There.
So, I've got a Galaxy S10e, with a model number G970U1, and the entire reason I bought this thing was so that I could use voice over LTE on AT&Ts network - it was one of the model numbers listed that was supported by AT&T, however, the phone itself, while being brand new, was originally a Verizon phone, as the phones CSC states that it is XAA/XAA/VZW. Upon insertion of my ATT sim card, the phone did not adapt to being an ATT CSC, even though it has the OYM software that should have the ATT CSC in it. I have tried a ton of things to try to get it to switch CSCs, from flashing an ATT CSC in Odin, to just doing resets with and without the sim card in, to literally paying $35 for Samkey to try their CSC changer, but simply doesn't work. nothing I do will get this thing to switch to the ATT CSC.
Anyways, as a consequence of not running the ATT CSC, VoLTE does not work. ATT has already provisioned the phone for VoLTE but the phone simply doesn't automatically acquire an IMS registration upon boot. I've discovered after many hours of trial and error, a way to make VoLTE work, but I can't find a way to make the fix stick between boots. This is where I'm hoping somebody else can come in and help. I'm looking to try to get the phone to stop automatically discovering IMS settings since I think it's this very auto discovery that is causing my fix not to stick.
Here is what I have to do every time the phone reboots to get volte working:
Open Alliance Shield X, go to App Manager
Search for IMS settings, click it, go to activities, and then launch the IMS settings menu with the first activity in the list.
Go to the IMS service settings, upon clicking of the IMS service settings, ALL of the toggles for RCS and MMTEL will be off and the upper left corner says "ATT US" - I toggle all of the toggles on and wait about 10 seconds
Go to settings, about, sim card status, and at this point my IMS registration status should have gone from not registered, to registered, however, VoLTE still doesn't work at this point.
Switch back to the IMS settings menu, go back a page and then click "Reset to default" to reset all IMS settings to default. Here is where things get strange - at this point, the IMS settings menu will claim I am using the T-Mobile IMS settings - but at this point my IMS registration status will remain registered, and VoLTE will work properly until I restart the phone.
I want to try to keep these settings, but like I said, once I reboot the phone, it gets the ATT IMS settings and VoLTE will refuse to work, and my IMS will not be registered.
Any advice?
PhotonDispenser said:
... Any advice?
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Do you absolutely HAVE to have ATT? You would likely get better results with T-mobile.
MrGoodtunes said:
Do you absolutely HAVE to have ATT? You would likely get better results with T-mobile.
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Click to collapse
Not necessarily, but the issue is that I've got 6 lines on AT&T, with some of the phones not being paid for.
You might try this method. Download the Latest same firm tool. Hit this tool is basically used for removing the FRP lock on phones, and it actually does work for that, but one other feature the program has is the ability to change the CSC code on your firmware. Which it did successfully, until the phone was rebooted and then it locked back on to AT&t. So the trick I think would be that after you use the tool and before you reboot the phone do whatever you're going to do because it you can change it to xas or xaa in which case it's unlocked and you should be able to manipulate it. I have never actually done this but in theory I think it might work good luck brother keep fighting the good fight
I activated my VOLTE for my unlock TMObile phone V600TM running on the latest android 12 version 30f by just the below commands
enter dial, type *#546368#*600#
Field test
IMS setting
Test
PreferenceOperator put OPEN
Preference country put MY (according to your country example Indonesia would be IND or America with be the US and so on)
Tick the 2 options below
✓ Support Volte on Command
✓ Volte setting enabled
restart ims process
Once done go to the mobile network option and add the below APN(not sure if this APN is universal but it works for me in Malaysia in all the carriers so I guess you can give it a try) don't delete the existing APN
APN: ims
APN name: ims
APN type: ims
after that restart your phone and you will see the VOLTE sign appearing next to the wifi symbol and so on. Make sure your 4G signal is strong enough if not it won't appear.
Also, I notice when I use the 4636 commands to check it still says IMS is not registered and Volte is not provision but I can use Volte maybe this is the bypass as I tested the call and so on already just make sure your Sim card supports or is Volte activated as well.
Also the Volte setting wont appear in Mobile network but it will work with the VOLTE icon appearing
My TMObile V600TM phone is network locked.
How to unlock it? if yes could you please point me out?
thanks
colincsf said:
I activated my VOLTE for my unlock TMObile phone V600TM running on the latest android 12 version 30f by just the below commands
enter dial, type *#546368#*600#
Field test
IMS setting
Test
PreferenceOperator put OPEN
Preference country put MY (according to your country example Indonesia would be IND or America with be the US and so on)
Tick the 2 options below
✓ Support Volte on Command
✓ Volte setting enabled
restart ims process
Once done go to the mobile network option and add the below APN(not sure if this APN is universal but it works for me in Malaysia in all the carriers so I guess you can give it a try) don't delete the existing APN
APN: ims
APN name: ims
APN type: ims
after that restart your phone and you will see the VOLTE sign appearing next to the wifi symbol and so on. Make sure your 4G signal is strong enough if not it won't appear.
Also, I notice when I use the 4636 commands to check it still says IMS is not registered and Volte is not provision but I can use Volte maybe this is the bypass as I tested the call and so on already just make sure your Sim card supports or is Volte activated as well.
Also the Volte setting wont appear in Mobile network but it will work with the VOLTE icon appearing
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Click to collapse
it worrking by Viettel - VietNam. Preference country: VN. thanks for share
Hiii
When I try to enter to IMS settings, the screen shows LG IMS but nothing more. My phone is network unlocked.
fercas said:
Hiii
When I try to enter to IMS settings, the screen shows LG IMS but nothing more. My phone is network unlocked.
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Click to collapse
Lg phones g8x, g8, v60, velvet Volte enable for all carriers, unlisted countries also
I will try to keep this post as small as possible. This will enable Volte for Phone ranging from Lg g8x, g8 and V60 without root or modifying the system files. Many have posted ways to get it, Iam only trying to help out the small bits missing...
forum.xda-developers.com
thanks to the OP for this thread, really pushing for these amazing devices to live on, you can follow my first steps to get the IMS option to open up.
Tried it on V600TM30C in Greece (GR) Cosmote and worked! Thank you! I have tried other ways (rooting,etc) but none worked so far.
I have also tried it on V600EA10 but I couldn't enter IMS settings menu and the johndaniel tutorial didn't seem to work, so I restored my back up to V600TM30C. I still need to find a way to have 5G.
anyone tried Lg v60 L-51a ???