In South Korea has to mobile cellphone radiation level through according to the classification of the regulations, the phone radiation problems fetching attention again. But, the cell phone radiation is no longer only 2 G era of GSM and CDMA mobile phone for environmental protection, but the 3 G mobile phone radiation, or even iPhone phone also involved.
3 G mobile phone radiation to get attention
Mobile phone how much radiation and how much damage to human body and, so far, and not determined, and South Korea has a way of what tickling people's nerves again.
Cause is South Korea requests before the Spring Festival from this year June, in mobile phones and tablet computer on the outer packing, mark electronic radiation intensity level, make consumers need not measurements will know the real damage radiation.
Mobile phone radiation is a deep-rooted problem, 10 years ago by the end of 2001, China unicom (the Po) mount CDMA once when the "radiation low, more environmental protection" as the main advantages of CDMA mobile phone is one of publicity, and points GSM mobile phone radiation high. And nearly half a year, cell phone radiation again leads people to discuss the problem.
Last May 31, headquartered in Europe of the world health organization's international cancer research institutions subordinate cellphones rf fields may cause cancer in humans as the material, think "need to fully assess cell phone use may cause long-term consequences".
Last November, the Indian government has issued a mobile phone and signal radiation of the tower standards, regulations in the future mobile vendors must in India mobile phone sales counter airframe and are clearly labeled the mobile phone radiation levels.
At the end of the month, Hong Kong and heavily apple iPhone mobile phone radiation from the value to exceed bid, will cause damage to the user's body.
And in the mainland, a user use small equipment testing, draw a nokia (the Po) a mobile phone radiation value between 1000-2000 floating. And other mobile phones in between 10 to 40.
3 G mobile phone radiation value contrast
"Take small equipment is impossible to measure the value of mobile phone radiation. Cell phone radiation, known as the professional test than absorption rate, also called SAR, the professional laboratories, it should have some of the very large equipment, want to have the human body model, want to have a manipulator, and some control procedures, the use of very strict procedures and methods to measure, to accurately measure values." China tell deputy chief engineer so think zhang laboratory.
According to introducing, the international and domestic are early of cell phone radiation have strict inspection standard, SAR is human body each unit kg allow absorption radiation, the SAR value represents radiation effects on the body, SAR value is lower, the radiation is absorbed the quantity is less.
In the 2 G era, CDMA mobile cellphone the SAR value than GSM low, this has been a consensus. Beijing television station "7 days 7 channel program have reported that dell (the Po) company was recalled the replacement AC adapter and a problem: in the user use the substitute AC adapter through the external power supply when using a laptop computer, if in laptop computers have a cell phone call around or receiving short message, power adapter will mistakenly think that is a strong magnetic field around the interference and automatically cut off power supply. But interestingly, power adapter only mobile phone signals by the GSM network, while the effect of CDMA network cell phone signal is not lead to the power adapter closed.
However, in the age of 3 G, 3 G cell phone radiation how? The United States environmental working group in the September released a report on the market collected dozens of mobile phone radiation mainstream testing, we can judge if a security and a dangerous mobile phones. The report shows that, the lowest mobile phone radiation is the LG Quantum, radiation was only 0.35 W/kg, for CDMA2000 format, the highest mobile phone radiation is MOTOROLA (the Po) Bravo and Droid 2 Global, radiation were 1.59 W/kg and 1.58 W/kg, are all WCDMA pattern. Another kind of high radiation of the blackberry (the Po) 8820 radiation value of 1.58 W/kg, for GSM.
In China, each in the specification of the mobile phone is marked its radiation value, or SAR value. Nokia to GSM or WCDMA standard give priority to, its N8 the SAR value of 1.02 mobile phone W/kg, N97 is 0.67 W/kg, C3 for 1.09 W/kg, 5230 is 1.10 W/kg. SONY Ericsson mobile phone system of basic and nokia, the mobile phone U_1 of SAR value of 1.58 W/kg, T707 for 0.62 W/kg. But CDMA mobile phone ME811 MOTOROLA the SAR value of 0.447 W/kg; China telecom (the Po) to HTC (the Po) customized a CDMAGSM mobile phone "double qing S" the specification of the last page also marked the SAR value of 0.447 W/kg.
IPhone does not exist radiation to exceed bid
Can see, CDMA in 3 G era of radiation value still lower than the GSM standard WCDMA mobile phone follow-up.
But, at the same time that the industry, whether WCDMA mobile phone or CDMA2000 mobile phone, as long as it is through the national testing of formal brand 3 G phones, the SAR value is in the acceptable limits, no harm to human body.
In Europe, the highest for 2 W SAR value/kg, and in the U.S., Canadian supreme the allowable value of 1.6 W/kg. Our country is used by European standards, because our country market in the past is more of the same GSM mobile phones with Europe, in order to take care of GSM mobile phones, so mainly by the U.S. than CDMA standard scale slightly some wider.
Even iPhone mobile phone, the environmental working group report showed that the iPhone in the mobile phone radiation all kinds of products of the highest is the iPhone 3 GS, for 1.19 W/kg, iPhone 4 radiation for 1.17 W/kg, and iPhone 3 G only 1.03 W/kg, these phones are in the iPhone normal range, "iPhone cause infertility" no scientific basis.
The report also noted that cell phone signal weaker, the more serious the radiation. Therefore, the 3 G mobile cellphone radiation by the actual level 3 G signal influence.
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