Samsung Galaxy SIII LTE (samsung-i9305)

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Samsung Galaxy SIII LTE
Samsung Galaxy SIII LTE
Samsung Galaxy SIII LTE
Manufacturer Samsung
Name Galaxy SIII LTE
Codename i9305
Released 2012
Original software Android 4.1.1
Chipset Exynos 4412 Quad
CPU Quad-core 1.4 GHz Cortex-A9
GPU Mali-400MP4
Display 720x1280 Super AMOLED
Storage 16 GB
Memory 2 GB


  • tyxieblub


What works

  • So far, what works for samsung-i9305 (Galaxy SIII LTE version) also works for the samsung-i9300 (Galaxy SIII international GSM version without LTE). (Neither of these SIII models should be confused with the North American SIII models, which require OS builds.)
  • Installation to sdcard (pmbootstrap install --sdcard=/dev/mmcblk...)
  • Touchscreen
  • Weston (only on SD card)
  • XWayland
  • Wifi
  • osk-sdl

What does not work

  • The rest

How to enter flash mode

  • Hold power + Home + volume down
  • When prompted, release all buttons and press volume up


$ ./ init

Install to sdcard

# Replace /dev/mmcblk with your actual sdcard device
$ ./ install --sdcard=/dev/mmcblk


- Set phone to ODIN mode

 1. Turn off phone
 2. Connect USB cable
 3. Hold VOLUME_DOWN + HOME + POWER until you get Warning!! screen
 4. Push VOLUME_UP to continue to ODIN mode screen

- Build and flash the kernel

 $ ./ flasher flash_kernel

- If flashing fails, try plugging the device into a USB 2.0 port.


Once postmarketOS is installed on the sdcard and the kernel is flashed, you need telnet to unlock the root partition

 $ telnet
 Connected to
 Escape character is '^]'.
 Enter passphrase for /dev/mapper/mmcblk1p2:

Then you can SSH into the device.

 $ ssh user@


To get the wifi working, you'll need to modify the wpa_supplicant confg

 # If this is not done, wpa_supplicant launches itself with -ip2p0
 $ echo 'wpa_supplicant_args="-iwlan0 -Dwext"' | sudo tee /etc/conf.d/wpa_supplicant
 $ sudo wpa_passphrase $YOUR_SSID > /etc/wpa_supplicant/wpa_supplicant.conf
 $ /etc/init.d/wpa_supplicant restart

Write the following file to
 auto lo 
 iface lo inet loopback   
 auto wlan0 
 iface wlan0 inet dhcp

Restart the network to verify it's working

 $ /etc/init.d/networking restart

Set it to start on boot

 $ sudo rc-update add wpa_supplicant boot
 $ sudo rc-update add networking default

Reboot and you should be connected on boot.

Mainline Kernel

There is currently no mainline kernel available but it should be possible to mainline this device. Have a look at Midas on Mainline for work on mainlining very similar devices. Replicant is also interested in mainlining this device and replacing the bootloader with u-boot and would like to collaborate with us [1].