Remove the indicated four 2 mm screws with a Phillips #00 screwdriver. (Units with the 3G assembly have Phillips #000 screws.)

Next, gently lift the 3G assembly with a Spudger or your fingers.

This Kindle Touch is the WiFi only model and comes with a plastic placeholder instead of the 3G assembly.

Disconnect the antenna lead by carefully prying it off the 3G board with a plastic tool.