Samsung Galaxy J6 2018 (samsung-j6lte)

Features
Flashing	Works
USB Networking	Works
Internal storage	Works
SD card	Works
Battery	Partial
Screen	Partial
Touchscreen	Works
Multimedia
3D Acceleration	Works
Audio	Broken
Camera	Broken
Camera Flash	Broken
Connectivity
WiFi	Works
Bluetooth	Works
GPS	Broken
Modem
Calls	Broken
SMS	Broken
Mobile data	Broken
Miscellaneous
FDE
USB OTG
Sensors
Accelerometer	Works
Ambient Light	Works
Proximity	Works
Haptics	Works

Samsung Galaxy J6 (2018)
	; J6 running Phosh
Manufacturer	Samsung
Name	Galaxy J6 (2018)
Codename	samsung-j6lte
Released	2018
Type	handset
Hardware
Chipset	Samsung Exynos 7870 Octa
CPU	Octa-core 1.6 GHz Cortex-A53
GPU	Mali-T830 MP1
Display	720 x 1480 OLED
Storage	32/64 GB
Memory	3/4 GB
Architecture	aarch64
Software
Original software	Android
Original version	8.0
Extended version	10.0
postmarketOS
Category	testing
Pre-built images	no
Mainline	yes

Samsung Galaxy J6, also known as Samsung Galaxy On6, is an Exynos 7870 device released by Samsung in 2018.

Contributors

naproxen

Users owning this device

Lexpdev (Notes: broken camera)
Lucasredelive (Notes: broken screen)
Naproxen (Notes: Mainlining Subject)
Olofolleola4 (Notes: SM-J600FN - Broken display)
Rmb
Speedyes (Notes: SM-J600FN, tinkering with pmOS)
TryzenAlpensky (Notes: SM-J600FN 32GB/3GB model)

How to enter flash mode

When the phone is powered off, insert the USB cable while holding the Volume Up and Volume Down buttons to boot into download mode. A turquoise colored screen will appear, asking for confirmation. Press Volume Up to confirm. Your device is ready for flashing via a front-end such as Odin or Heimdall.

To boot into recovery, hold the Power and Volume Up buttons.

Installation

Prerequisites

Make sure your phone:

Has its bootloader unlocked.

Preparation

Choose the following in the pmbootstrap init wizard:

Vendor: samsung
Device codename: j6lte

To proceed with the installation run:

$ pmbootstrap install

This will begin preparing your installation in your host computer.

Flashing

After the installation process is completed, get your phone booted into download mode, Then run:

$ pmbootstrap flasher flash_kernel

The kernel gets flashed to your device. Now, the device will reboot automatically. Hold the key combination to reboot into download mode. Then run:

$ pmbootstrap flasher flash_rootfs

The rootfs is flashed and the device gets rebooted. It should reboot to postmarketOS now.

If there are any problems with flashing the rootfs via Heimdall, you may attempt an installation via recovery.

Partial features

Battery

The fuelgauge driver (reports the charge percentage) works fine, but there's no charger driver which is responsible for reporting charge status and control.

Screen

Display works with simple-framebuffer, so brightness control is non-functional. Samsung DECON/DSIM driver for Exynos 7870 is a work-in-progress, which will properly initialize and use the display.

Problems

USB Networking

At least on some operating systems, the host doesn't receive network packets from the device, unless the host sends packets to the device. Due to this behavior, SSH (among other things) doesn't work well. A workaround is to have ping -Aq <IP> run in the background while you interact with the device (replace <IP> with the device IP address).

Wi-Fi

Wi-Fi behaves very erratically (practically unusable) when the SDIO is probed in DMA mode. The driver fails to communicate with the SDIO, reporting timeout errors. As a workaround, the SDIO is forced to be probed in PIO mode.

Debugging (retrieving kernel logs)

Read this.

Downstream Kernel

A port based on the downstream kernel exists which has been archived in favor of the mainline kernel. More information is available in older revisions of this page.