How much radiation would a cellphone need to emit in order to be a hazard to human health?

I was reading the manual off my Motorola Devour and it says the phones SAR levels are 0.45. I'm guessing this amount is low enough to not have to go into concern but now i'm wondering, what amount would be dangerous for human health?



How many times would I have to multiply my cellphones radiation level in order for it to cause adverse side effects?



Bonus question: Does a cellphone emit just as much radiation when it is not in use than when it is?How much radiation would a cellphone need to emit in order to be a hazard to human health?
We used antennas in the navy with 10's of thousands of watts. The cell phone uses less than a watt. There were danger areas around the antennas where you had to avoid when transmitting. That isn't ionizing radiation. It essentially is microwave which is just translated as heat. It would be like placing a 1 watt heating source near your head. The sun is about 1000 watts per square meter so the heat is so far below normal heat variation that only an alarmists could get excited about it. It is an idiotic campaign by lawyers and idiots. I'm surprised that alarmists aren't blaming them for warming or killing honey bees.
Here is a link to an article by Environmental Working Group that studied a number of cellphones and the SAR emissions from them.



http://www.ewg.org/cellphone-radiation



There are varying opinions as to the safety of Specific Absorption Rates (SAR) due to conflicting interests and who supplies the studies. The article at EWG.org does state that absorption rate is higher when the cell phone is held at the head versus anywhere else on the body. It also states that the rate of SAR emission is lower when not in use (on standby power).



There are a number of opinions and studies not only on cell phone radiation (microwave) but on cell tower as well. Links are provided below.



Hope this helps.How much radiation would a cellphone need to emit in order to be a hazard to human health?
First, you should recognize that the radiation that a cell phone emits is not the same as atomic radiation.

Not at all.



Next, different people are probably more, or less susceptible to the radiation.

What would be okay for some folks, would not be okay for others.



And, your phone does emit more radiation when it's being used than when it's not, but does emit some all the time that it's turned on.



Also, for myself, i just assume that radiation next to my head is going to be worse for me than just in my hand.

At worst, people can live without a hand.

The same is not true about a head.



note that i haven't answered your question yet.

because there is not a definitive answer.

this has been a subject for discussion for some years, and still there is not a definite answer.



if i only used my phone once in a while, once or twice a day, for not very long calls, i'd not be very concerned.

if i used my phone a lot, then i'd have a bluetooth, or something.

in fact, a wired headset is safest.

but it's more of a drag to use, unless you're sitting at a desk.



have a good day.
The frequency used by cell phones is in the microwave range. It isn't ionizing and the only danger with this wavelength is the heat it can generate (exactly how a microwave works).



Cell phones don't emit anywhere near enough to do anything.How much radiation would a cellphone need to emit in order to be a hazard to human health?
i watched a presentation by bryce wylde some environmentalist and he said that you can talk for a minute and a half without having effects to your brain but texting is fine. he has some sort of device on his phone so that he doesn't get as much radiation. sorry that's all i know
not sure