Originally Posted by spirodave
I guess since I have had no replies then I'm Sol. Seems to be a hardware problem but the circumstances led me to believe it to be software
Sent from my SAMSUNG-SGH-T989 using XDA Premium 4 mobile app
Try to go to stock GB or ICS with ODIN. Try also go to stock JB 4.1.2.
Do you say that softkeys-light is turned-on but not working?! If that issue isn't software-related, it can be a missing contact in flex (in other words, the flex [cable-like connector] that connects softkeys with board isn't fully connected, giving the appearance of to be working.
Hahahahaha it's only a hypothesis.
The last solution: try to inspect the hardware, yourself and/or the help of an expert.
Hope to help.