Samsung Galaxy S4 (samsung-jflte)

From postmarketOS
Samsung Galaxy S4
Galaxy S4
Galaxy S4
Manufacturer Samsung
Name Galaxy S4
Codename samsung-jflte
Released 2013
Category testing
Pre-built images no
Original software Android
Original version 4.2.2
postmarketOS kernel 3.4.113
Hardware
Chipset Qualcomm Snapdragon 600 (APQ8064AB)
CPU Quad-core 1.9 GHz Krait 300
GPU Adreno 320
Display 1080x1920 AMOLED
Storage 16/32 GB
Memory 2 GB
Architecture ARMv7
Type handset
Unixbench Whet/Dhry score 717.1
Features
USB Networking
Works
Flashing
Works
Touchscreen
Works
Display
Works
WiFi
Works
FDE
Works
Mainline
Battery
Works
3D Acceleration
Audio
Bluetooth
Camera
GPS
Mobile data
Internal storage
SMS
Calls
USB OTG
NFC
Sensors
Accelerometer
Magnetometer
Ambient Light
Proximity
Hall Effect
Barometer
Power Sensor
Misc
Built-in DVB
Camera Flash
Keyboard
Touchpad
USB-A
HDMI/DP
Ir TX
Ir RX
Stylus
Memory Card
Haptics
Ethernet
FOSS bootloader
This device is based on the Qualcomm Snapdragon 600.
See the SoC page for common tips, guides and troubleshooting steps

Supported models

GT-I9505 - SGH-I337M - SGH-M919 - GT-I9505G (smaller /system partition)

This page is only for versions of the Galaxy S4 that use the Qualcomm Snapdragon 600 SoC, see https://en.wikipedia.org/wiki/Samsung_Galaxy_S4#Model_variants

Watch out, some versions have bootloaders that can't be unlocked, although the locked versions have a bootloader that contains a bug.

Contributors

Maintainer(s)

Users owning this device


What works

  • Compiling the latest lineageos kernel with some patches applied
  • Booting a graphical screen when installing PostmarketOS as recovery zip in TWRP.
  • Network connection via USB and SSH access
  • Screen works
  • Brightness can be changed by echoing a value to /sys/class/backlight/panel/device/backlight as root
  • Wifi with properietary blobs
  • Touch screen
  • Wayland
  • X11
  • Keyboard and mouse with USB OTG adapter (Hotplug works)
  • Initramfs password entry for full disk encryption

What does not work

  • Touch screen requires a reboot to work in some rare cases
  • 3D acceleration
  • Wayland default on screen keyboard

How to enter flash mode

Press volume down + the power button to enter Download Mode. It is now possible to use Heimdall for flashing.

Installation

  1. Install pmbootstrap
  2. pmbootstrap init
  3. pmbootstrap install
  4. Put your S4 in Download Mode (Volume Down + Power) and connect it with USB
  5. pmbootstrap flasher flash_kernel
  6. After the kernel is flashed, the device will reboot. Hold the volume down button while it boots up to re-enter Download Mode
  7. pmbootstrap flasher flash_rootfs

Wifi

Once the device has been successfully initialized, enable it:

$ sudo ip link set wlan0 up

Configure wpa_supplicant (only necessary on encrypted networks):

$ wpa_passphrase $YOUR_SSID | sudo tee /etc/wpa_supplicant/wlan0.conf
<enter passphrase here and press Enter>

Connect to network using wpa_supplicant:

$ sudo wpa_supplicant -B -i wlan0 -c /etc/wpa_supplicant/wlan0.conf 

If your network uses DHCP, start the DHCP client:

$ sudo udhcpc -i wlan0

Hardware / sensors detail

Output from hwtest on jfltespr sph-l720t:

hwtest output (jfltespr)

Category Model Path Status Value
framebuffer msmfb44_80901 /sys/class/graphics/fb0 Working U:1080x1920p-0
framebuffer msmfb44_70001 /sys/class/graphics/fb1 Working
framebuffer msmfb44_a0001 /sys/class/graphics/fb2 Working
input sec_touchkey /dev/input/event20 Working
input gpio-keys /dev/input/event19 Working
input apq8064-tabla-snd-card Headset Jack /dev/input/event18 Working
input apq8064-tabla-snd-card Button Jack /dev/input/event17 Working
input ssp_context /dev/input/event16 Working
input meta_event /dev/input/event15 Working
input step_cnt_sensor /dev/input/event14 Working
input step_det_sensor /dev/input/event13 Working
input sig_motion_sensor /dev/input/event12 Working
input geomagnetic_sensor /dev/input/event11 Working
input temp_humidity_sensor /dev/input/event10 Working
input proximity_sensor /dev/input/event9 Working
input light_sensor /dev/input/event8 Working
input gesture_sensor /dev/input/event7 Working
input pressure_sensor /dev/input/event6 Working
input gyro_sensor /dev/input/event5 Working
input accelerometer_sensor /dev/input/event4 Working
input sec_touchscreen /dev/input/event3 Working
input max77693-muic /dev/input/event2 Working
input sii8240_rcp /dev/input/event1 Working
input pmic8xxx_pwrkey /dev/input/event0 Working

For reference, sensor information from sensors sandbox (f-droid) on jfltespr sph-l720t; note that in addition to hardware-based sensors, it presumably includes software-based / derived sensors:

sensor details (sensorssandbox)

name vendor version type
K330 3-axis accelerometer STMicroelectronics 1 1
YAS532 magnetic sensor Yamaha Corp 1 2
K330 gyroscope sensor STMicroelectronics 1 4
Barometer sensor BOSCH 1 6
MAX88920 proximity sensor MAXIM, inc. 1 8
CM3323 RGB sensor Capella Microsystems, inc. 1 5
SHTC1 relative humidity sensor Sensirion 1 12
SHTC1 ambient temperature sensor Sensirion 1 13
YAS532 magnetic sensor uncalibrated Yamaha Corp 1 14
Samsung significant motion sensor Samsung, inc 1 17
Samsung, inc 1 18
Samsung step counter sensor Samsung, inc 1 19
Uncalibrated gyroscope sensor Samsung, inc 1 16
Screen orientation sensor Samsung electronics 3 65558
Rotation vector sensor AOSP 3 11
Gravity sensor AOSP 3 9
Linear acceleration sensor AOSP 3 10
Orientation sensor AOSP 1 3

Photos

I9505 libreoffice xfce.jpg I9505 neofetch sxmo.jpeg

Links