Here's how the phone slowly failed:
-The microphone (in the top half) suddenly stopped working
-Speakerphone still worked. I think it worked because it's another microphone in the body of the phone
-The notification LED stopped working
-The touchscreen would occasionally not respond until I flicked the keyboard a few times. After a while the entire touchscreen stopped working but the screen still works.
-I could sort of get around the broken touchscreen by using the trackpad which still works
All of the phone's problems are in the top half of the device. No drop/water damage. Is it just a dead ribbon cable?
I don't expect a response any time soon but if you're reading this, hey!