[Galaxy Note 4 General] AlpineMan:
This is still a work in progress. For now, treat this as a place holder. Proceed at your own risk!

First...giving thanks to the following (in no particular order):

[MENTION=5256159]Azlun[/MENTION] for his thread and contributions in this thread.

[MENTION=4583018]yakapa40[/MENTION] for his thread.

[MENTION=5353566]fffft[/MENTION] for his thread.

[MENTION=2018502]vndnguyen[/MENTION] for his NV Calculator app.

Attached are the ORIGINAL (backup) qcn files from my Note 4's. I've replaced the original IMEI's from the files...the last 14 digits for the T-Mobile and AT&T phones have been replaced with "34 56 78 90 12 34 56". The Verizon Note 4 and Note Edge's IMEI's have been zero'd out.

These 4 phones have the following LTE bands enabled by default:

T-Mobile Note 4 [SM-N910T] - 1,2,3,4,5,7,8,12,17 (NV Item 6828 = 67807)

AT&T Note 4 [SM-N910A] - 1,2,3,4,5,7,17,20 (NV Item 6828 = 589919)

Verizon Note 4 [SM-N910V] - 4,13 (NV Item 6828 =4104)

Verizon Note Edge [SM-N915V] - 4,13 (NV Item 6828 = 4104)

I'm also including qcn files from my Galaxy S5's. I'm planning on testing the concept on my S5's first before doing them on the Note's. These phones have the following LTE bands enabled by default:

T-Mobile S5 [SM-G900T] - 1,2,3,4,5,7,8,17 (NV Item 6828 = 65759)

Verizon S5 [SM-G900V] - 4,13 (NV Item 6828 =4104)

The goal is to have these phones enable as much LTE bands as possible.

Drivers / Tools you'll need:

Samsung Diagnosic Mode (DM) drivers

QPST v2.7 Build 425

EFS Professional

QXDM Professional v3.12.714

NV Calculator

DFS CDMA Tool v15.07.20.0 (optional)

Before you proceed with this, make sure you do a QCN and EFS backup of your phone using QPST and EFS Professional respectively. I used QPST v2.7 Build 425. The ROM's in my test phones are stock unrooted kitkat 4.4.4.

Enable Diagnostic Mode (DM) Instructions:

1) Install Samsung Diagnosic Mode (DM) drivers (if not already installed) on your PC.

2) Enable Diagnostic Mode on your phone:

T-Mobile/AT&T Note 4 & Note Edge:

a) Dial *#0808#

b) Under "USB" section, select AP

c) Under "USB Settings" section, select "DM+MODEM+ADB" -> Don't forget to put this back to "MTP+ADB" when you're done!

Verizon Note 4 & Note Edge:

a) Dial ##DMMODE# or ##366633#

b) Select "Enable DM Mode" -> Don't forget to put this back to "Disable DM Mode" when you're done!

3) Connect the phone to your PC via USB cable. Drivers will install (if not already installed).

QCN Backup Instructions:

1) Enable DM mode.

2) Launch "QPST Configuration" app on your PC. Take note of your phone's Diagnostic Port. If you don't see a COM port assigned to the Diagnostic Port of your phone, click on "Add New Port" button and manually add the port.

3) Once you're sure you've identified the Diagnostic Port, click on "Start Clients", then select "Software Download".

4) Click on the "Backup" tab.

5) Click on the Browse button in the "Port:" section and choose the appropriate COM port and click on OK button.

6) Click on the Browse button in the "QCN file:" section and choose an appropriate directory and filename for your QCN backup file.

7) Click on the Start button.

8) When completed, you can launch the "QCNView" app on your PC to view the contents of your QCN backup file.

EFS Backup Instructions (must have micro SD card, be rooted and BusyBox installed):

1) Enable USB Debugging on your phone.

2) Launch "EFS Professional" app on your PC.

3) Click on the EFS Professional button.

4) It will perform checks to make you've met the prerequisites.

5) Click on the "App. Config" tab.

6) On "Device Storage Options", change the location to "/storage/extSdCard".

7) Click on the "Backup" tab.

8) On "Device Filters", choose "*** All Partitions ***"

9) Select the appropriate partitions you want to backup. I'll leave this up to you. I backup everything except "system", "userdata", and "cache" since I already backup my apps and data using TitaniumBackup....plus I really don't need to backup "system" and "cache".

8) Click on the "Backup" button.

You can use DFS to quickly tell what LTE bands are enabled on your phone. I used DFS CDMA Tool v15.5.4.0 (demo version).

Indentify enabled LTE bands on your phone:

1) Enable DM mode.

2) Connect your phone to your PC via USB cable.

3) Launch DFS.

4) Click on the "Ports" button and double click on the COM port associated with your phone's DM port. Close this window.

5) Click on the "Band" tab.

6) Click on the "LTE" sub tab.

7) Click on the "Read" button.