jemfalor said:

gcf whitelist blocks hidden or disabled 5g bands when you enable them. the only way to get those bands working

Can you tell me how you know this?
And what steps to take to make it work?
I also have a new gem I found that may help with enabling more 5g bands but I got very sick and I haven't tested it personally I'm starting to recover. Pray for me guys I've never been scared before like this.

intheb0x said:

Can you tell me how you know this?
And what steps to take to make it work?
I also have a new gem I found that may help with enabling more 5g bands but I got very sick and I haven't tested it personally I'm starting to recover. Pray for me guys I've never been scared before like this.

This is the result of removing gcf whitelist on my SM-N986U1 it unlocks some 5G bands.

[Guide] Service Mode and CSC Guide/Enable LTE/5G Bands and Services/5G Low Band on U1

Hello All, Many people have asked about service mode and CSC related questions and I thought we should get a discussion going that is all in one place. *DISCLAIMER* I do not take any responsibility for any issues that may occur from changing...

forum.xda-developers.com

Romeo Nickolas said:

This is the result of removing gcf whitelist on my SM-N986U1 it unlocks some 5G bands.

[Guide] Service Mode and CSC Guide/Enable LTE/5G Bands and Services/5G Low Band on U1

Hello All, Many people have asked about service mode and CSC related questions and I thought we should get a discussion going that is all in one place. *DISCLAIMER* I do not take any responsibility for any issues that may occur from changing...

forum.xda-developers.com

Here's how:
View attachment 5708691

Click to expand...

Thanks I knew how to do it thru the menu,I just wondered if there's any specific method to doing it as it doesn't unlock any extra bands for me.

Only time I had extra 5G bands was after I flashed dsh firmware but it was a combo of Verizon and T-Mobile bands after a Sim swap it reverted back.

Switching CSC via Sam app or the one I buy credits from I have both and used both but sadly after switching CSC if you have a sim card in the phone as soon it boots ot sees the CSC is wrong and reverts .
So it's a waste we cannot use any CSC not related to our Sims in our phones after Android 11 I think because we cannot stop the reboot/reset.

intheb0x said:

Thanks I knew how to do it thru the menu,I just wondered if there's any specific method to doing it as it doesn't unlock any extra bands for me.

Only time I had extra 5G bands was after I flashed dsh firmware but it was a combo of Verizon and T-Mobile bands after a Sim swap it reverted back.

Switching CSC via Sam app or the one I buy credits from I have both and used both but sadly after switching CSC if you have a sim card in the phone as soon it boots ot sees the CSC is wrong and reverts .
So it's a waste we cannot use any CSC not related to our Sims in our phones after Android 11 I think because we cannot stop the reboot/reset.

Click to expand...

I found a method about that and it really works just using an adb command
Check it here

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

killahax6 said:

Doing this step nothing happens after *

Note20ultra. Android12

*#*#27663368378#*#*
When you dial the last * in the string above, the service mode menu will automatically show. YOU SHOULD NOT HAVE TO HIT THE CALL ICON BUTTON TO MAKE A CALL AT ANY POINT.

Use *#73# not that it doesn't works on some csc
Use native dialer not google

Romeo Nickolas said:

Use *#73# not that it doesn't works on some csc
Use native dialer not google

Typed it in on default call nothing happens after *

killahax6 said:

Typed it in on default call nothing happens after *

Try to use samfw tool again and type manually *#73# there's no * at the end. It shoud open the menu after typing #

Romeo Nickolas said:

Try to use samfw tool again and type manually *#73# there's no * at the end. It shoud open the menu after typing #

If doesnt work then what? And what does U1 stand for maybe i dont have u1. Does it mean ONE UI VERSION? if so im on 4.1

killahax6 said:

If doesnt work then what? And what does U1 stand for maybe i dont have u1. Does it mean ONE UI VERSION? if so im on 4.1

As I've said even u and u1 works so it doesn't matter.
If it doesn't work try to read more comments on the thread.
U1 is the unlocked firmware without bloatwares.