Jump to content

Samsung Galaxy S21 FE 5G (samsung-r9q2)

From postmarketOS Wiki
Samsung Galaxy S21 FE 5G
Samsung Galaxy S21 FE booting a close to mainline kernel
Samsung Galaxy S21 FE booting a close to mainline kernel
Manufacturer Samsung
Name Galaxy S21 FE 5G
Codename samsung-r9q2
Model G990B2
Released 2022
Type handset
Hardware
Chipset Qualcomm Snapdragon 888 (SM8350)
CPU 1x 2.84GHz Kryo 680 Prime (X1-based)
3x 2.42GHz Kryo 680 Gold (A78-based)
4x1.8GHz Kryo 680 Silver (A55-based)
GPU Adreno 660
Display 6.4", 1080 x 2340 pixels, 19.5:9, 120hz, touchscreen, Dynamic AMOLED
Storage 128GB/256GB
Memory 6/8GB
Architecture aarch64
Software
Original software
The software and version the device was shipped with.
Android 12
Extended version
The most recent supported version from the manufacturer.
Android 16
postmarketOS
Category testing
Pre-built images
Whether pre-built images are available from the postmarketOS Installation page.
no
Mainline
Instead of a Linux kernel fork, it is possible to run (Close to) Mainline.
yes
pmOS kernel
The kernel version that runs on the device's port.
6.7.0-rc3
Features
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
Internal storage
eMMC, SD cards, UFS...
Works
Battery
Whether charging and battery level reporting work.
Untested
Screen
Whether the display works; ideally with sleep mode and brightness control.
Works
Touchscreen
Broken
Multimedia
3D Acceleration
Works
Audio
Audio playback, microphone, headset and buttons.
Untested
Camera
Untested
Camera Flash
Untested
Connectivity
WiFi
Works
Bluetooth
Broken
Ethernet
Untested
GPS
Untested
NFC
Near Field Communication
Untested
Modem
Calls
Untested
SMS
Untested
Mobile data
Untested
Miscellaneous
FDE
Full disk encryption and unlocking with unl0kr.
Untested
USB OTG
USB On-The-Go or USB-C Role switching.
Broken
Fingerprint
Fingerprint reader.
Untested
Sensors
Accelerometer
Handles automatic screen rotation in many interfaces.
Untested
Proximity
Untested
Haptics
Untested
Barometer
Sensor to measure air pressure
Untested

Contributors

Users owning this device

  • Piecuu (Notes: I don't like it)

How to enter flash mode

First, turn off the device and then:

  • Download Mode: Hold the Volume Up and Volume Down buttons and connect the device to a computer with a USB cable.
  • Recovery Mode: Hold the Power and Volume Up buttons while the device is connected to a computer with a USB cable.

Installation

Port not upstreamed yet.

uniLoader

This device has trouble booting mainline Linux because Samsung uses device tree fragments. Thus, this port uses a secondary bootloader called uniLoader (port for r9q2 is not yet in tree) Standard bootloaders are not supported. Only uniLoader will work here.