[Android Q&A, Help & Troubleshooting] bahahamut:
i know this is a newer phone but i'm still pretty surprised i haven't been able to find anyone that's rooted it yet. i've been all over the internet it seems. this is the :

Samsung Galaxy J3(6)

SM-J320VPP

Android 6.0.1 Marshamllow

Verizon pre-paid plan/network

i see lots of videos and guides for other j320f or j320p (close but no cigar) and nothing works. what i've tried so far:

- Dev mode enabled, USB debugging and OEM unlocked.

- any/all 1 click root apps. none worked, and i'd like to avoid these anyway unless you know it works 100% for my version. at this point i'll try anything.

- recovery / flash superSU. only i haven't even gotten past flashing a recovery. i've tried several different versions of Odin with several different versions of recovery .tar's and for each combination i've tried Odin simply fails. big red FAIL button in upper left corner. sadness. this seems like what i need help with. i have SuperSU downloaded so if i can just get a custom recovery working for my phone i'm hoping it's a simple process from there of booting into the custom recovery and then installing the SuperSU. presto.

is there no hope? is there no tested, confirmed working recovery that i can flash to my phone using Odin? i've tried Odins 3.07, 3.09, and 3.11.1. various custom recovery .tars but the only one i know for sure is the J2 version official from TWRP's website (yes i know it says J2 but someone on another thread said it's similar enough to someone ELSE's model "j320f" or something so i gave it a shot) the other recovery .tars i tried are suspect since they had generic names "recovery.tar" and were downloaded from links provided in many different "guides" that i've googled.

internet, you have failed me. thus do i issue this challenge to all those mighty phone hackers of the land. come forth and slay the evil giant that is my phone's ludicrous security (seriosuly how is this even a thing still in 2016. my phone can do so much more, so much better but for these shenanigans).

thanks so much in advance!

EDIT: not sure about the bootloader. i may be a complete idiot. yes. ok. i'm onto something. gonna post this anyway for any other poor soul that has this version phone, but i think Odin's probably failing because the bootloader is still locked. and Samsung doesn't make this easy like motorola or HTC. T_T. once more into the fray! i'll see if i can't track down a method for unlocking the bootloader on my phone. should i return victorious i'll go ahead and share my steps with the rest of the class.

EDIT2: there is no waking from this nightmare. i dig and dig and dig and can find no root. *sigh*

-- i've got android studio installed. and the java SDK platform-tools which contains the adb.exe, fastboot.exe, etc.

-- something i should explain here: in all these guides whenever there's a step that requires the phone to be connected to the PC, it simply says to, you know...connect your phone. but MY phone by default only uses the cable for battery charging. i have to (on my phone) swipe down from the top, select the "connected for charging" message bringing up "Use USB For" options, then select "Transferring media files" option. THEN my phone shows up both in my windows explorer and displays as a device when i run "adb devices".

--when i run "adb reboot bootloader" this does the same thing as holding down pwr/home/vol down - phone boots up into a blue (teal?) background with a large down arrow in center, below that it says "downloading...do not turn off target". in the upper left are several lines of system font style text:

ODIN MODE

PRODUCT NAME: SM-J320VPP

CURRENT BINARY: Samsung Official

SYSTEM STATUS: Official

FRP LOCK: OFF*

QUALCOMM SECUREBOOT: ENABLE (CSB)

RP SWREV: S1, T1, H1, R1, A1, P1*

SECURE DOWNLOAD: ENABLE

*the R's above may be A's or vice versa...hard to read font. sorry

--but as soon as i've rebooted into this mode, my phone disappears from adb devices' list of devices attached. regardless when i run the "fastboot oem unlock" command from the adb shell on my PC at this point i get the infamous "waiting for any device" message and then, of course, nothing....forever. i've also installed PDAnet but i think it's hitting the same road block where my phone is only using the cable for battery charging and i can't toggle that option from ODIN MODE. there's also a "USB Configuration" choice under development options on the phone that has the same options as "Use USB for" but this doesn't stick when booting into ODIN MODE. sadness. i need to retire my brain thoughts at this point. will post TL;DR. you're a saint of geeks if you've made it through my WoT to here.

EDIT3: just an observation - the only thing (so far) that will detect my phone in ODIN MODE is ODIN itself. is there a way to use ODIN to unlock the bootloader?

TL;DR: i think odin is failing when attempting to flash because of locked bootloader. need help with unlocking bootloader first? phone defaults to use USB cable for charging only so i CAN change that to MTP while phone is on normal and then run "adb reboot bootloader" but then phone vanishes from adb devices list once it reboots (and cable is then only charging). thus, cannot run "adb fastboot oem unlock" cuz it hangs displaying "waiting for any device" -- can i unlock the bootloader on this phone? or did i buy a phone that's IMPOSSIBLE TO ROOT!?!?