Samsung Galaxy Ace 3 3G (samsung-logan)

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.)

This device has been tested with postmarketOS, but its device package has not yet been added to the postmarketOS repositories. This means that it cannot be selected in pmbootstrap.

Samsung Galaxy Ace 3 3G

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)
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 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 Charging and battery level reporting works	Partial
Screen 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 Auto screen rotation works in desktops e.g. Phosh or Plasma Mobile	Untested
Magnetometer Sensor to measure magnetism	Untested
Ambient Light	Untested
Proximity	Untested
Hall Effect Also known as 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 ==

• AppData 174

Users owning this device

• AppData 174

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: 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)