***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.
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
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.
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**
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.
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
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.
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**
Attachments
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Screenshot_20220823-150801_Service mode RIL~2.jpg -
Screenshot_20220823-145925_Service mode RIL~2.jpg -
Screenshot_20220823-152924_Service mode RIL.jpg -
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