Samsung Galaxy J8 2018 (samsung-j8y18lte)
Appearance
| This device runs a Downstream kernel. Some UIs will not work, and most features (3D acceleration, audio, etc.) may be broken. |
|
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 The software and version the device was shipped with. |
Android 10 |
Extended version The most recent supported version from the manufacturer. |
Android |
| postmarketOS | |
| Category | downstream |
Mainline Instead of a Linux kernel fork, it is possible to run (Close to) Mainline. |
no |
| Device package |
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| Kernel package |
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Flashing Whether 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 Whether charging and battery level reporting work. |
Works
|
Screen Whether the 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 Handles automatic screen rotation in many interfaces. |
Works
|
Magnetometer Sensor to measure the Earth's magnetism |
Broken
|
Ambient Light Measures the light level; used for automatic screen dimming in many interfaces. |
Broken
|
Proximity |
Broken
|
Hall Effect Measures magnetic fields; usually used as a 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
j8y18lteand Gnome UI withpmbootstrap init - Generate the rootfs with
pmbootstrap installto install postmarketOS to the phone orpmbootstrap install --sdcard /dev/sdXto 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.