How To LOCK LTE Band Without Root on SAMSUNG Device - Samsung Galaxy S21 Themes, Apps

This method is specifically for Samsung Galaxy. Because the default hiddennetwork system application is available. for devices with other brands and types, I haven't tried it.
Please follow the following methods:
1.
You need to install this app for FREE
at Google Play
https://play.google.com/store/apps/details?id=com.teknokia.force4glteonly
pro version : https://play.google.com/store/apps/details?id=com.teknokia.force4glteonlypro
galaxy store: https://apps.samsung.com/appquery/appDetail.as?appId=com.teknokia.force4glteonly
pro version : https://apps.samsung.com/appquery/appDetail.as?appId=com.teknokia.force4glteonlypro
2. Run the Application
3. Select SIM 1 Only menu, then Hidden Activity
4. wait to load until 100%
5. tap the search box type Hiddennetwork
6. In the call setting section, there is a hiddennetwork activity.
7. Long Tap 3 options will appear: Create Shortcut, Launch Activity, Edit Shortcut. I recommend Select Create Shortcut to make it easier for us to enter network activity mode without having to bother opening the Force 4G LTE Only 2020 Pro application.
8. Please select Launch Activity to enter the system Network Mode to select network mode.
9. tap the three-line menu in the left corner. select Band Selection to lock LTE band. please select a frequency band then slide the toggle selection to activate it.
for more detail video you may go to https://www.teknokia.com/2021/02/how-to-lock-lte-band-selection-on.html

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Can this app also make the phone prefer a certain band above other bands?
For example, at my house the phone switches alot between band20 and band3, can I make the phone prefer band20 over band3 so that it doesn't constantly switch?

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Dstzor said:
Can this app also make the phone prefer a certain band above other bands?
For example, at my house the phone switches alot between band20 and band3, can I make the phone prefer band20 over band3 so that it doesn't constantly switch?
Click to expand...
Click to collapse
You can't change priority... try it out, you can choose the bands you want and then it will select among that group.
Anyway, it's nice on sprint to test out the tmo bands... which suck where I live lol

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It seems like the app has been removed from both the Google play store and the galaxy store

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You can use "Samsung Band Selection" on Play Store

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This latest update on tmobile/sprint g991u, CVF3 got rid of that function.... Aholes!
Samsung band selection or making the shortcut to the hidden setting app which does the same thing doesn't work.
Dialer codes don't work either
Also bixby routines used to be able to force lte but now it doesn't work. These jagoffs are trying to force 5g, which in my area is slower than lte.
Ugh , I hate how these carriers and Samsung just remove functionality as they please....
Now I'm thinking to roll back with odin as bl is still v5
Or maybe i should put u1 firmware, it might not get the authoritarian updates that carriers push
Btw, You can disable updates by using adb to disable com.wssyncmldm

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With latest security update, this option is hidden and the changes could not be reverted back. Any idea to get to normal.

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2009anandsingh said:
With latest security update, this option is hidden and the changes could not be reverted back. Any idea to get to normal.
Click to expand...
Click to collapse
Are you on U or u1? June update cvf and above removed the option.
Cvd from May is the latest update on s21 that works.
So I switched to that one using odin to flash it.
Make a backup with smart switch first because for me I could not keep user data, it claimed corruption.
Afterwords use adbappcontrol
To disable updates by disabling "com.wssyncmldm" app.

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Has anyone tried this going from Sprint to the TNX SIM?

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robnitro said:
Are you on U or u1? June update cvf and above removed the option.
Cvd from May is the latest update on s21 that works.
So I switched to that one using odin to flash it.
Make a backup with smart switch first because for me I could not keep user data, it claimed corruption.
Afterwords use adbappcontrol
To disable updates by disabling "com.wssyncmldm" app.
Click to expand...
Click to collapse
Is it removed completely or just inaccessible without root?

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elesbb said:
Is it removed completely or just inaccessible without root?
Click to expand...
Click to collapse
I went from Sprint to T-Mobile sim. Either one allowed me to change lte bands until the June cvf update.
The activity is no longer part of the dialer app in June or July updates.
This is using "activity launcher" from play store.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}

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robnitro said:
I went from Sprint to T-Mobile sim. Either one allowed me to change lte bands until the June cvf update.
The activity is no longer part of the dialer app in June or July updates.
This is using "activity launcher" from play store.
View attachment 5669887
Click to expand...
Click to collapse
I'm guessing the activity you circled does not show up in the cvf update? Cause that is the correct activity to access the menu. This really sucks. I wonder if I can decompile the activity and see what it does when you toggle the switch at the top. Might be able to re-create it possibly. Not sure what permissions and restrictions are in it.

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elesbb said:
I'm guessing the activity you circled does not show up in the cvf update? Cause that is the correct activity to access the menu. This really sucks. I wonder if I can decompile the activity and see what it does when you toggle the switch at the top. Might be able to re-create it possibly. Not sure what permissions and restrictions are in it.
Click to expand...
Click to collapse
Yeah, it's like when oneui 4 removed dialer codes, now this...
I uploaded cvdb may version of the app from tmobile U firmware
Maybe you can install this one on top or extract the activity?
I tried to rename the package name and app name but installing gives me an error that it's already installed. Usually renaming lets me clone an app ..
(Also tried app cloner, it installed but I couldn't access the cloned app's activities)
Original from system priv-app here
TelephonyUI.zip - AnonFiles
anonfiles.com

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robnitro said:
Yeah, it's like when oneui 4 removed dialer codes, now this...
I uploaded cvdb may version of the app from tmobile U firmware
Maybe you can install this one on top or extract the activity?
I tried to rename the package name and app name but installing gives me an error that it's already installed. Usually renaming lets me clone an app ..
(Also tried app cloner, it installed but I couldn't access the cloned app's activities)
Original from system priv-app here
TelephonyUI.zip - AnonFiles
anonfiles.com
Click to expand...
Click to collapse
Thanks.
It definitely seems like the functionality should stil be there - ie if another app calls the same parameters, it should work. Seems like they just removed the activity, but the firmware/modem still has the ability to do so. I have no idea why they would remove this. Like how horrible it is for their end user to be able to select the LTE/5G band that gives them the best service...
And you prolly can't simply install the other one next to the current one without some serious modding to the app. You would have to rename not only the package name that is in the manifest, but also the package name inside the source code, otherwise you get conflicting classes. I am not sure how app cloner does their cloning, but that is probably why you couldn't see the activity.

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2009anandsingh said:
With latest security update, this option is hidden and the changes could not be reverted back. Any idea to get to normal.
Click to expand...
Click to collapse
Does *#2263# give you the menu to select bands for each SIM slot? I found this today, but am using the may update

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Hello, there is a solution!!! But only if the device is rooted. If you download this.: ( https://play.google.com/store/apps/details?id=de.szalkowski.activitylauncher )Inside the application, search for.: (com.samsung.android.app.telephonyui.hiddennetworksetting.MainActivity) And create a shortcut as Root.

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Anyone with the latest Android 13 update have the ability to change bands without root using the original app?
If not does *#2263# give you the menu to select bands for each SIM slot?
This is another way to choose LTE bands but a little annoying.

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In another thread, someone using Android 13 couldn't even use the dialer code. Freaking Samsung bending over for the carriers by locking down power settings...
Remember folks, you can roll back to the may cvdb update and get back the ability to choose bands with the app or the dialer code.
Don't wait until your revision 5 ( u5) becomes 6 and locks you out of previous versions!! Also remember to adb disable the update app
( com.wssyncmldm )!
Verizon 5G issues
Ok, so I have the SMG991U and almost every time it's in 5G I have no internet: it feels almost as though there is no date. Tried poking around and I can't find anything but I'm sure I can't be alone. I think I had the issue with 12 (hard to say...
forum.xda-developers.com