[Android Q&A, Help & Troubleshooting] thalidomide1111:
First why i am writing this...this is for those who are planning to root their samsung note 5 ( SPECIALLY THE BEGINNERS ) who are in delimma of various problems that arise from rooting their device improperly.This is generally for the owners of samsung note 5 duos who want to root their device ( mine is samsung note 5 SM N920C Duos) and install twrp and custom rom.I have faced a lot of my problem from bootlooping my device to settings not working to dual sims not working etc etc and so decided to help those who are like me because i dont want them to suffer.So lets start.Be careful this is only for note 5 SM n 920 c duos only and specially if u want ur device to work with Jio Volte or Volte.Before starting go to settings and click about device.There u will find build number..Click it for 7 times to enable developer options.Now get back into settings and u will see a new option developer option in settings.Click on it and u will see OEM unlock..You need to enable it and also enable unknown sources.

Before starting u should get ready with these zip files before start.

1.Samsung Kies 3 zip 2.Odin flash tool zip( Odin is a tool used to flash Samsung firmware released by Samsung). 3.CF autoroot zip. 4.Twrp zip 5.Custom ROM zip 6.Custom kernel zip to work on ur galaxy note 5 duos

Samsung Kies 3

Here is the link www.samsung.com/in/support/usefulsoftware/KIES/

( download the zip file in ur computer & flash it on ur computer and connect ur device to see if it is recoginised.If yes proceed further otherwise restart ur computer & see if its recognised.If no,reinstall it)

While rooting,samsung kies should not be running in background..always remember this.

Odin flash tool (odin 3.10.7)

Link of odin zip- http://odin-download.soft112.com/

U can also download the latest version of odin tool also from odin site.

Download the zip file on ur computer and extract the zip files and run odin as a administrater.Once its open,power off your mobile and press voulme down button,power button and home button together till u see a triangle & then press voulme up button to enter into download mode.Now connect usb to ur mobile and connect other port with ur computer.Odin will detect ur device and u will see a message added with blue colour visible .Now you are ready to flash CF autoroot to root your mobile so proceed further.If you dont see added message,change the usb port where cable is connected to ur computer to other port in your computer or remove cable and restart ur computer and repeat procedure from beginning)

CF autoroot to root ur device

Link to download Cf autoroot for ur device- https://autoroot.chainfire.eu/

Find ur device from list and download zip on ur computer & extract it into a new folder .U can name it CF autoroot to remember.

Link to download Cf autoroot for Note 5 SM N920C - https://download.chainfire.eu/839/CF-Root/CF-Auto-Root/CF-Auto-Root-noblelte-nobleltejv-smn920c.zip

Link of how to flash cf autoroot- https://android.gadgethacks.com/how-to/android-basics-root-with-cf-auto-root-0167401/

Once ur phone reboots after root procedure u will see the SuperSu in ur mobile.wait patiently as ur mobile will take a few minutes to reboot.do not panic its normal.

TWRP Recovery-

Use Odin to flash TWRP recovery in same manner as u have installed cf autoroot.

Link to TWRP download- https://mega.nz/#!D0kFCLQS

Link how to install TWRPin ur rooted mobile- http://www.stechguide.com/install-twrp-recovery-on-samsung-galaxy-note-5/

I have shared the direct link to download Odin and TWRP so download directly from links so ur time will be saved.

Remember first to root and then download TWRP because for me it's most comfortable.Once u have installed custom recovery u can press volume up button,home button and power button simultaneously to get into recovery.Once u get into recovery go to backup and backup ur phone.

Custom ROM installment.

Since I needed volte to work on my phone and I wanted stock ROM which is debloated I downloaded karan's ROM ( Your ROM v3) which is very fluid, has better battery life than stock ROM and everything like stock ROM.I am really thankful to karan, Dr ketans and other members of XDA for their wonderful work.So this section is dedicated to those who wants to install this ROM in their Samsung note 5 duos but may be applicable to other Roms too.For flashing this ROM properly on ur note 5 duos u need these zip files.

Karan's ROM

- https://mega.nz/#!q18HTKRY!xU46z8HeN08g3QCwBhl2kDA3l7png-30BzhW_LEM_ag

Settings fix zip

- https://mega.nz/#!OsNiRSjS!vsPsTYdDxd-295EuFK4G7typcgenfD8Bpq6UEIwAH6c

Dual SIM fix zip

-U need to flash custom kernel googymax which worked for me.Here is the link-. https://mega.nz/#!W10VBCwK!FaE2MwX4lik4Zr9xuxfQ_g_7EU1_iGqO0m2KCKskbKs

You need to get into TWRP recovery and then get into wipe section and clear cache , delvike,data and system leaving internal storage and USB and once the wipe is finished hit back button and now click on install.I have downloaded my zip files into DCIM in my mobile which will help u remembering where u have stored ur zip files so I clicked DCIM where I found the downloaded zips and flashed them one by one. Flash all three one by one first Karen's v3 ROM, then googymax kernel then settings fix zip and after everything is finished clear cache and Dalvik and then reboot system.It will take several minutes so wait patiently .Samsung note 5 SM 920 c Duos may show with red kernel is not seandriod enforcing in top of screen but don't worry.Ur phone will reboot normally.

Once u have rebooted u can see everything working fine with great battery life.U can also flash 3 min battery zip and system UI as described in karan's thread by getting back into TWRP recovery and flashing zip files .They should be flashed only after ur phone has rebooted after installing ROM.