Samsung Galaxy J8 2018 (samsung-j8y18lte)
Appearance
Samsung Galaxy J8 (2018) with GNOME Samsung Galaxy J8 (2018) with GNOME | |
Manufacturer | Samsung |
---|---|
Name | Galaxy J8 (2018) |
Codename | samsung-j8y18lte |
Released | 2018 |
Type | handset |
Hardware | |
Chipset | Qualcomm Snapdragon 450 (MSM8953) |
CPU | Octa-core 1.8 GHz Cortex-A53 |
GPU | Adreno 506 |
Display | 720 x 1480 (5.9", AMOLED) |
Storage | 32/64 GB |
Memory | 3/4 GB |
Architecture | aarch64 |
Software | |
Original software | Android |
Original version The version the device was shipped with. |
10 |
postmarketOS | |
Category | testing |
Pre-built images Whether pre-built images are available here. |
no |
Mainline Instead of a Linux kernel fork, it is possible to run (Close to) Mainline. |
no |
Flashing It is possible to flash the device with pmbootstrap flasher . |
Works
|
---|---|
USB Networking After connecting the device with USB to your PC, you can connect to it via telnet (initramfs) or SSH (booted system). |
Works
|
Battery Charging and battery level reporting works |
Works
|
Screen Display works. Ideally with sleep mode and brightness control. |
Works
|
Touchscreen |
Works
|
Multimedia | |
3D Acceleration |
Broken
|
Audio Audio playback, microphone, headset and buttons. |
Broken
|
Camera |
Broken
|
Connectivity | |
WiFi |
Works
|
Bluetooth |
Broken
|
GPS |
Untested
|
NFC Near Field Communication |
Broken
|
Modem | |
Calls |
Untested
|
SMS |
Untested
|
Mobile data |
Untested
|
Miscellaneous | |
FDE Full disk encryption and unlocking with unl0kr. |
Works
|
USB OTG USB On-The-Go or USB-C Role switching |
Works
|
Sensors | |
Accelerometer Auto screen rotation works in desktops e.g. Phosh or Plasma Mobile |
Works
|
Magnetometer Sensor to measure magnetism |
Broken
|
Ambient Light |
Broken
|
Proximity |
Broken
|
Hall Effect Also known as flip cover sensor |
Works
|
This device is based on the Qualcomm Snapdragon 450 (MSM8953). See the SoC page for common tips, guides and troubleshooting steps |
Users owning this device
- Erfto1 (Notes: SM-J810F - Boots)
- Lucasredelive (Notes: SM-J810M - STOCK ROM - abandoned mainline)
How to enter flash mode
- Recovery: Power on the device by holding and .
- Download: Hold and while plugging the device to a computer with an USB cable.
Unlocking the bootloader
- Enable developer mode by tapping on the build number seven times in Settings → About phone → Software information
- Return to the main settings page and go to the developer options
- In developer options, enable OEM unlocking. Make sure you have an internet connection if it doesn't show up.
Installation
- Unlock the bootloader if not done.
- Select
j8y18lte
and Gnome UI withpmbootstrap init
- Generate the rootfs with
pmbootstrap install
to install postmarketOS to the phone orpmbootstrap install --sdcard /dev/sdX
to install it on an SD card. - Generate the flashable images with
pmbootstrap export
. They will be stored in/tmp/postmarketOS-export
, or you can specify another location like this:pmbootstrap export /home/user/Downloads/pmos
- Reboot into download mode
- Flash postmarketOS with
heimdall flash --BOOT /tmp/postmarketOS-export/boot.img --SYSTEM /tmp/postmarketOS-export/samsung-j8y18lte.img
(replace the paths if necessary). If you installed to an SD card, specify only the BOOT argument. Also you may choose the bigger USERDATA partition for the system image. - The phone should reboot straight into postmarketOS.