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Samsung Galaxy Ace 3 3G (samsung-logan)

From postmarketOS Wiki
Note Not to be confused with the LTE model, which has a Qualcomm SoC! (If you have a letter after the model number, you have the LTE model.)
Samsung Galaxy Ace 3 3G
GT-S7270 running Firefox under Xfce4
GT-S7270 running Firefox under Xfce4
Manufacturer Samsung
Name Galaxy Ace 3 3G
Codename samsung-logan
Released 2013
Type handset
Hardware
Chipset Broadcom BCM21664
CPU 1.0 GHz Cortex-A9
GPU VideoCore IV
Display 480x800 TFT
Storage 4 GB
Memory 1 GB
Architecture armv7
Software
Original software
The software and version the device was shipped with.
Android 4.2.2 (Jelly Bean)
Extended version
The most recent supported version from the manufacturer.
Android
FOSS bootloader no
postmarketOS
Mainline
Instead of a Linux kernel fork, it is possible to run (Close to) Mainline.
no
pmOS kernel
The kernel version that runs on the device's port.
3.4.5
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
Battery
Whether charging and battery level reporting work.
Partial
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.
Broken
Camera
Broken
Connectivity
WiFi
Broken
Bluetooth
Broken
GPS
Broken
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.
Untested
Sensors
Accelerometer
Handles automatic screen rotation in many interfaces.
Untested
Magnetometer
Sensor to measure the Earth's magnetism
Untested
Ambient Light
Measures the light level; used for automatic screen dimming in many interfaces.
Untested
Proximity
Untested
Hall Effect
Measures magnetic fields; usually used as a flip cover sensor
Untested
Barometer
Sensor to measure air pressure
Untested
Power Sensor
Sensor to monitor current, voltage and power. Not fuel gauge!
Untested

== Contributors ==

Users owning this device

How to enter flash mode

  • Download mode: While the device is turned off, hold Power + Home + Volume Down, and confirm the action by pressing Volume Up thereafter.
  • Recovery mode: While the device is turned off, hold Power + Home + Volume Up.

Installation

pmbootstrap init # Choose samsung-logan
pmbootstrap install
# Boot into download mode before running the command below
pmbootstrap flasher flash_rootfs
# Boot into download mode again
pmbootstrap flasher flash_kernel

Hardware Acceleration

Note Note: This is not fully tested and could not work.
  1. Open aports/device/testing/device-samsung-logan/APKBUILD in a text editor and add mesa-egl to the depends
  2. Rebuild the device package: pmbootstrap build device-samsung-logan --force
  3. Run pmbootstrap install --fde

However, the image will be much bigger than the system partition, so you will need to either flash it to another partition or an SD card.

USB Internet

See USB Internet.

Display

If your device is stuck on the postmarketOS splash screen on startup (or the screen is black) and you are using LightDM, connect to your phone via SSH and run this command:

loginctl show-seat seat0

If CanGraphical is no or 0, open the LightDM config in a text editor:

sudo vi /etc/lightdm/lightdm.conf

Find the line where it says #logind-check-graphical=true and replace it with logind-check-graphical=false. Restart the device and it now should work.

See also

  • pmaports!3779 Initial merge request (Not merged at the time of writing)