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Pantech SKY VEGA S5 (pantech-ef44)

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Pantech SKY VEGA S5
Pantech SKY VEGA S5
Pantech SKY VEGA S5
Manufacturer Pantech
Name SKY VEGA S5
Codename pantech-ef44
Model IM-A840
Released 2012
Type handset
Hardware
Chipset Qualcomm Snapdragon S4 Plus (MSM8960)
CPU Qualcomm Krait MP2 1.5GHz
GPU Qualcomm Adreno 225
Display 720x1280 IPS LED
Storage 16GB
Architecture armv7
Software
Original software
The software and version the device was shipped with.
Android 4.0.4
Extended version
The most recent supported version from the manufacturer.
Android 4.1.2
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.
5.19-rc7
Features
Flashing
It is possible to flash the device with pmbootstrap flasher.
Partial
USB Networking
After connecting the device with USB to your PC, you can connect to it via telnet (initramfs) or SSH (booted system).
Untested
Battery
Charging and battery level reporting works
Untested
Screen
Display works. Ideally with sleep mode and brightness control.
Partial
Touchscreen
Untested
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
Auto screen rotation works in desktops e.g. Phosh or Plasma Mobile
Untested

Contributors

  • Hexagonwin

Users owning this device

How to enter system modes

  • For fastboot mode, hold both volume keys and power key until Pantech menu shows. Then, choose fastboot in the Pantech Menu.
  • For Recovery mode, hold volume up and power until bootloader's splash image is gone.

Installation

The downstream based port is not booting, and thus is not upstreamed. With the (close to) mainline kernel the device is booting, so it might get upstreamed later on. In the meantime, please manually compile the mainline kernel fork available on the bottom of the page. The pmOS installation can either be on the microSD card or the internal eMMC.


Problems

  • Vendor kernel (Linux 3.4.0) only compiles and boots with certain old toolchains, arm-eabi-4.4.3, arm-eabi-4.6, arm-eabi-4.7.
  • Not many users are available for the target, and less developers are availlable.
  • Hardware failures are common, including the touchscreen, speaker, battery, camera.

Mainline

  • With a dts, the phone can boot Linux 5.19-rc7 from peremen's tree.

The phone boots normally, and USB telnet is working fine in debug-shell. eMMC is being detected and the kernel boots with both lk2nd and stock fastboot. As the kernel image is bigger than the boot partition (10MB), it can only boot the kernel by loading it from fastboot.

Pictures

See also