Samsung Galaxy S III Neo (samsung-s3ve3g)
Appearance
	
	
| This device runs a Downstream kernel. Some UIs will not work, and most features (3D acceleration, audio, etc.) may be broken. | 
| 
 Samsung Galaxy S III Neo  | |
| Manufacturer | Samsung | 
|---|---|
| Name | Galaxy S III Neo | 
| Codename | samsung-s3ve3g | 
| Released | 2014 | 
| Type | handset | 
| Hardware | |
| Chipset | Qualcomm Snapdragon 400 (MSM8226) | 
| CPU | Quad-core 1.2 or 1.4 GHz Krait 300 | 
| GPU | Adreno 305 | 
| Display | 720x1280 | 
| Storage | 16 GB | 
| Memory | 1397 MB | 
| Architecture | armv7 | 
| Software | |
Original software The software and version the device was shipped with.  | 
    Android 4.4.4 | 
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 | 
 | 
| Kernel package | 
 | 
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.  | 
    
 Untested 
 | 
Screen Whether the display works; ideally with sleep mode and brightness control.  | 
    
 Works 
 | 
Touchscreen  | 
    
 Works 
 | 
| Multimedia | |
3D Acceleration  | 
    
 Untested 
 | 
Audio Audio playback, microphone, headset and buttons.  | 
    
 Untested 
 | 
Camera  | 
    
 Untested 
 | 
| Connectivity | |
WiFi  | 
    
 Untested 
 | 
Bluetooth  | 
    
 Untested 
 | 
GPS  | 
    
 Untested 
 | 
| Modem | |
Calls  | 
    
 Untested 
 | 
SMS  | 
    
 Untested 
 | 
Mobile data  | 
    
 Untested 
 | 
| Miscellaneous | |
FDE Full disk encryption and unlocking with unl0kr.  | 
    
 Untested 
 | 
| Sensors | |
Accelerometer Handles automatic screen rotation in many interfaces.  | 
    
 Untested 
 | 
Contributors
Maintainer(s)
Users owning this device
- Gfgit (Notes: Not yet tested)
 - H3 (Notes: runs lineageOS 18.1 (Android 11). current Daily-Driver B. equipped with three 18650 Li-Ion cells for battery life.)
 - Iourine (Notes: with LineageOS, ready for testing PMOS)
 - NBon (Notes: Untested yet)
 - Nobodywasishere
 - Prowindows62 (Notes: Not available for testing)
 - Snejp
 - Whaththehelly (Notes: lk2nd flashed)
 
What works
- Flash Kernel (
pmbootstrap flasher flash_kernel) - Flash Rootfs (
pmbootstrap flasher flash_rootfs) - Initramfs boot
 - USB Network with internet
 - SSH Connectivity
 - Framebuffer graphics (Splash screens)
 - Touchscreen
 - Xwayland
 - Weston on framebuffer
 - Firefox on Weston (Xwayland)
 
What does not work
- Everything else was untested
 
How to enter flash mode
Press and hold + simultaneously. Then click to confirm.
How to enter recovery mode
Press and hold + simultaneously.
Installation
First, install pmbootstrap.
Setup device to be used:
$ pmbootstrap init
...
Vendor [samsung]: samsung          <- enter this
Device codename [s3ve3g]: s3ve3g   <- enter this
User interface [weston]:           <- choose any UI by your preference
...
Build the rootfs image:
$ pmbootstrap install
Then in order to flash it put your device in download mode, and plug it in USB. Then do:
$ pmbootstrap flasher flash_rootfs
 Hold "Volume down" + "Home" buttons at the end of the process,
 so that when phone reboots put it in flashing mode again 
$ pmbootstrap flasher flash_kernel 
 This time, don't hold any button, let it reboot to Linux!
Booting from SD card also works:
$ pmbootstrap install --sdcard=/dev/sdg
 Remember to change device /dev/sd* to your card reader
$ pmbootstrap flasher flash_kernel
Additional info
Phone is booting fine. When in charging mode it shows postmarketOS charging error splash screen.
- Back flashlight:
 
$ echo 255 > /sys/devices/leds-qpnp-rgb-e1d8be00/leds/white/brightness # turn on
$ echo 0 > /sys/devices/leds-qpnp-rgb-e1d8be00/leds/white/brightness   # turn off
- Hardware information
 
| Peripheral Type | Driver | Device | 
|---|---|---|
| Accelerometer | mpu6500_input | /devices/f9924000.i2c/i2c-2/2-0068 | 
| Camera | s5k6a3yx (front) s5k4h5yb(Samsung) or imx175(Sony) (back)  | |
| Camera Actuator | msm_actuator | /devices/i2c.78/i2c-20/20-0036 | 
| Charger (MUIC) | sm5502 | /devices/i2c.0/i2c-15/15-0025 | 
| GPU | Adreno 305 | - | 
| Gyroscope | mpu6500_input | /devices/f9924000.i2c/i2c-2/2-0068 | 
| Magnetic field sensor | yas532 | /devices/f9924000.i2c/i2c-2/2-002e | 
| NFC | pn547 | /devices/f9925000.i2c/i2c-3/3-002b | 
| Light and proximity sensor | cm36651 | /devices/i2c.81/i2c-23/23-0018 | 
| RGB Led | an30259a | /devices/i2c.81/i2c-23/23-0030 | 
| Touchscreen | mms144_ts | /devices/f9927000.i2c/i2c-5/5-0048 | 
| Touchscreen buttons | cypress_touchkey | /devices/i2c.82/i2c-21/21-0020 | 
Mainline Kernel
According to phoronix there is a mainline DTS available since 5.15.
Photos
- 
			
			Firefox running on Weston