User's Manual

18 Health/Safety/Warranty Guide Coolpad Quattro
®
II 4G
The research conducted thus far has produced conflicting results, and many studies have suffered from flaws in their research methods.
Animal experiments investigating the effects of Radio Frequency (RF) energy exposures characteristic of wireless phones have yielded
conflicting results that often cannot be repeated in other laboratories. A few animal studies, however, have suggested that low levels of RF
could accelerate the development of cancer in laboratory animals. However, many of the studies that showed increased tumor development
used animals that had been genetically engineered or treated with cancer-causing chemicals so as to be pre-disposed to develop cancer in
the absence of RF exposure. Other studies exposed the animals to RF for up to 22 hours per day. These conditions are not similar to the
conditions under which people use wireless phones, so it is largely unknown what the results of such studies mean for human health and
safety. Three large epidemiology studies have been published since December 2000. These studies investigated possible associations
between the use of wireless phones and primary brain cancer (glioma, meningioma, acoustic neuroma, other brain tumors, salivary gland
tumors), leukemia, or other types of cancer. None of the studies demonstrated the existence of any harmful health effects from wireless
phone RF exposures. However, none of the studies can provide absolute findings about long-term exposures since the average period of
phone use in these studies was approximately three years.
4. What kinds of phones are the subjects of this update?
Here the term “wireless phone” refers to handheld wireless phones with built-in antennas, often called “cell”, “mobile”, or “PCS” phones.
These types of wireless phones can expose the user to measurable Radio Frequency (RF) energy because of the short distance between the
phone and the user’s head. These RF exposures are limited by FCC safety guidelines that were developed with the advice of the FDA and
other federal health and safety agencies. When the phone is located at greater distances from the user, the exposure to RF is drastically
reduced due to a person's RF exposure rapidly decreasing with increasing distance from the source.
The so-called “cordless phones,” which have a base unit connected to the telephone wiring in a house, typically operate at far lower power
levels, thus producing RF exposures far below the FCC safety limits.
5. What is the FDA doing to find out more about the possible health effects of wireless phone RF?
The FDA is working with the U.S. National Toxicology Program and with groups of investigators around the world to ensure that