[Galaxy Note 4 Android Development (Exynos)] UnknownPlanet:
I have tried arya's method. After copying the file on the twrp recovery, then rebooting the phone. There's forbidden sign, any attempt to open the mobile network settings will shows up a message that says, "Insert SIM card. Insert SIM card to access network services."

There's just blank white on *#0011# and *#2263# menus.

Turning off and on airplane mode didn't work.

*#0011# back once then key input Q021233 didn't work.

*#0011# back once then key input Q0212633 didn't work.

There's no "CP : TEST1" on the *#1234# menu.

I need this to work. No 3G anymore in my country. And I guess my SIM card operates with LTE band 3. Is there any workaround that you can help me?

[UPDATE]

By flashing N910C Custom ROM and then set the band in 2263 RIL service mode I was able to enable my 4G for my provider with LTE Band 1 or 8. (Band 3 is not working)

Goodbye obsolete N910H 3G ROM. I'm so happy. Haha.

I haven't tried other Custom ROMs that based on N910C or even the stock version itself of N910C.

My Custom ROM is Hani Base v1.01 here:

https://xdaforums.com/t/rom-6-0-1-t...-v1-01-18-04-2016-deodexed-prerooted.3355958/

0. Backup your important data.

1. Enter TWRP Recovery mode. Install the latest version with Odin if you haven't.

2. Wipe Dalvik, System, Data, and Cache.

3. Backup Modem and EFS. (Very Important)

4. Install the Custom ROM.

5. Restore the Modem and EFS.

6. Reboot to system Mode.

7. On the initial setup, make sure to NOT turn on the Data Network toggle to avoid Band 3 invalid SIM forbidden sign.

8. The Secret Code (MMI code) of *#2263# is blocked with this ROM, so use 'Phone Info SAM v3.8.5' to bypass it with its root launch 0. I don't know any other apps that could bypass that. Put the APK in your storage so you can install it easily.

9. Done.

There will be 'KERNEL IS NOT SEANDROID ENFORCING' message in red text every time you boot. In other to solve this, you need to install the latest SuperSU 2.82 using TWRP. Here is the official thread of it

https://xdaforums.com/t/stable-2017-05-27-supersu-v2-82.3452703/

From reading the last pages of there, we'll get the official site to download: SR5-SuperSU-v2.82-SR5-20171001224502.zip

SuperSU Download

Tips #1

Or instead of staying with outdated superSU, enter recovery mode and flash unSU script by osm0sis and then flash Magisk. Reboot to system. Then install Magisk APK manually via file manager. Further notes is that, In order to install Magisk module you need 3rd party file manager, such as Amaze or FX.

Tips #2

You may also want to change your kernel, For example: 1) Go back to stock kernel, assuming you have the stock boot.img file or boot partition. 2) Update the H-Vitamin Kernel to latest of v2. 3) Flash custom kernel, such as SpaceLemon, make sure to choose the unrooted one. And to take advantage of that, install Synapse v0.45_MQ.apk and/or Kernel Adiutor from F-Droid. There's also fork of Kernel Adiutor which is MTweaks. And just for info, another fork named hKtweaks could only work on Android 7 (Nougat) and up.

Tips #3

You could change between band 1, 5, and band 8 in real time with the 2263 code above within the service menu as long as you avoid band 3.

For my provider in my current location, Band 5 is not available. So I could either use Band 1 or Band 8. As for my speed, Band 1 is much faster than Band 8.

As for band 2, it could be selected, but I don't see any signal, so your milage may vary.

Have fun.

Thanks @ananjaser1211 and everyone for the support.

And I also hope for the best for the future of this Lineage OS ROM to fully support 4G band selection.

Edit: added some tips.