Samsung A820 - Manual (Page 219)

Section 4A: Safety 211
Saf
e
ty
Maintaining Your Phone’s Peak Performance
There are several simple guidelines to operating your phone properly
and maintaining safe, satisfactory service.
ⅷ Speak directly into the mouthpiece.
ⅷ Avoid exposing your phone and accessories to rain or liquid spills.
If your phone does get wet, immediately turn the power off and
remove the battery.
ⅷ Blocking the internal antenna located near the hinge will reduce
signal performance.
Note: For the best care of your phone, only authorized personnel
should service your phone and accessories. Faulty service may
void the warranty.