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Cell phone Radiofrequency Exposure (Radiation Meters)
The FDA and FCC have suggested some steps that concerned cell phone users can take to reduce their exposure to radiofrequency energy (1, 22):
Reserve the use of cell phones for shorter conversations or for times when a landline phone is not available.
Use a hands-free device, which places more distance between the phone and the head of the user.
Hands-free kits reduce the amount of radiofrequency energy exposure to the head because the antenna, which is the source of energy, is not placed against the head.
http://emfnews.org/Lifewave-Cellphone-Matrix-Shield-Test.html