Step #1: This is a
very simple installation with no screws involved. Use your nail or
a small flat-head screwdriver to unclip the areas marked by the two
YELLOW squares, then unclip the rest of
the faceplate by following the RED
arrows.
Step #2: Snap on
the new faceplate and make sure it is clipped on all around, then
replace the old battery cover with the new one.