The Sony Ericsson X10 Mini Pro is a device so tiny that those accustomed to many of today’s gargantuan devices might think it was designed for a chihuahua. That however would just be silly due to their lack of opposable digits. It was in fact designed to be used by humans, and many humans use one. Despite being an older device, it’s running Android 4.1 and still has a loyal following—just as devices with hardware keyboards tend to , just look at the Desire Z for another example.
The hardware keyboard on the device, however, doesn’t always behave as you would expect when the device is running a custom ROM—specifically the LEDs that act as a backlight for the keyboard. Sometimes they don’t light up, and sometimes they stay lit up after the device is closed, leading both to poor battery life and an oddly glowing device.
XDA Recognized Contributor faiyyaz has had enough of this, and coded a simple but effective app to rectify the problem. Simply titled Keyboard Fix, it does exactly what it says on the tin and should make those pesky LEDs behave as expected on the majority of ROMs available for the device.
The app is still at an early stage, and issues may still be unreported. But if you struggle to keep your LEDs under control, this is definitely worth a shot. Sneak a peek at the original thread for more info.