My keyboard, my mouse, my computer speakers, the CD cases for my music collection,
my polycarbonate reading glasses, the remote control for my stereo, my telephone — all plastic.
It starts from the bottom, with the phone's shock - absorbent aluminum chassis; then the AMOLED panel is flexible to a point, and can withstand sudden impact; then the touch layer has a redundant backup in case the primary one is damaged upon impact; then there's a
polycarbonate (
read: plastic) layer where a phone's
glass cover normally rests; and then there's a secondary «lens» that acts as a redundant layer against impact while keeping the primary one free from scratches.