Use the plastic opening tool to pry open the device. Start on the volume control side (left side of the screen) and work your way up along the edge and across the top.
The side volume control buttons may fall out after opening the device.
Slowly unfold the back casing away from the front casing revealing the red and black wound wire speaker cable, marked by the red box.
Potential for device damage: Be gentle while separating the halves to prevent breaking the red and black wound wire speaker cable that bridges both halves.
Using tweezers, squeeze the plastic head of the black and red wound wire cable. This will detach the cable from the circuit board and fully separate the two halves.