Samsung SM-T537RZWAUSC - Manual (Page 9)

Health and Safety Information 3
Cell phones emit low levels of Radio Frequency (RF) energy.
Over the past 15 years, scientists have conducted
hundreds of studies looking at the biological effects of the
radio frequency energy emitted by cell phones. While some
researchers have reported biological changes associated
with RF energy, these studies have failed to be replicated.
The majority of studies published have failed to show an
association between exposure to radio frequency from a
cell phone and health problems.
The low levels of RF cell phones emit while in use are in
the microwave frequency range. They also emit RF at
substantially reduced time intervals when in the stand-by
mode. Whereas high levels of RF can produce health
effects (by heating tissue), exposure to low level RF that
does not produce heating effects causes no known adverse
health effects.
The biological effects of radio frequency energy should not
be confused with the effects from other types of
electromagnetic energy.
Very high levels of electromagnetic energy, such as is
found in X-rays and gamma rays, can ionize biological
tissues. Ionization is a process where electrons are
stripped away from their normal locations in atoms and
molecules. It can permanently damage biological tissues
including DNA, the genetic material.