Samsung Galaxy A7 2015 (samsung-a7)

Architecture
Some variants are released with Kitkat 4.4, which doesn't boot arm64 kernel, so upgrade to Lollipop 5.0 or later first.

How to enter flash mode
Press Volume Down, Power, and Home all at the same time to boot to Odin mode. After lk2nd is installed, press Volume Down and Power at the same time.

3D acceleration
Instead of 60 fps in video mode, panel  runs at 30 fps in command mode. The framerate is reduced to 5/6x on mainline, and it runs at only 25 fps now. Ideally, we should found a solution to covert the panel to video mode.

Touchscreen
There is no successful attempt on SM-A700H for now.

Ambient Light/Proximity Sensor
The driver for  ambient light/proximity sensor is not available.

Reboot Loop
There are some issues on the hardware, which cause endless reboot even you have a 100% charged battery.