http://www.ewg.org/project/2009cellphone/cellphoneradiation-fullreport.pdf

Radiation threats: The 10 most hazardous smartphones

    * Date: September 11th, 2009
    * Author: Jason Hiner

Based on new research, learn the 10 smartphones that emit the most
radiation, the 10 that emit the least radiation, and a few quick
safety tips.

——————————————————————————————————————————————————

One of the scariest unknown technology risks of this decade is the
issue of radiation from cell phones. There’s still an open question
about whether long term exposure to these mobile devices will cause
damage or disease to human beings.

The Environmental Working Group has a comprehensive new study
(download the full report as a PDF) that surveys the scientific
research on cellphone heath risks and provides radiation data for most
of the current cellphones in use. Here’s how the EWG explained the
mission of its study:

    We at Environmental Working Group are still using our cell phones,
but we also believe that until scientists know much more about cell
phone radiation, it’s smart for consumers to buy phones with the
lowest emissions. The U.S. government ought to require cell phone
companies to label their products’ radiation output so that consumers
can do the numbers at the point of sale. It doesn’t, so EWG has
created this user-friendly interactive online guide to cell phone
emissions, covering over 1,000 phones currently on the market.

The EWG study looks at all mobile phones, but since smartphones are
becoming a standard tool for businesses and IT professionals, I’ve
drilled down and looked at the list from a smartphone perspective.
I’ve broken out the 10 smartphones that produce the most radiation,
the 10 that product the least amount of radiation, and a list of the
radiation ratings of some of the most popular smartphones that did not
make either of those two lists.

When you look at these lists, keep in mind that the EWG has also
included some older models that are no longer being sold but are still
used by many workers and consumers. Also note that “W/kg” stands for
watts per kilogram, a measurement for power density.
The 10 smartphones with the highest radiation

   1. T-Mobile MyTouch 3G (1.55 W/kg)
   2. Blackberry Curve 8330 (1.54 W/kg)
   3. Palm Treo 600 (1.53 W/kg)
   4. T-Mobile Shadow (1.53 W/kg)
   5. Palm Treo 650 (1.51 W/kg)
   6. Blackberry Curve 8300 (1.51 W/kg)
   7. Blackberry Bold 9000 (1.51 W/kg)
   8. Sony Ericsson P910a (1.50 W/kg)
   9. HTC SMT 5800 (1.49 W/kg)
  10. BlackBerry Pearl 8120/8130 (1.48 W/kg)

The T-Mobile MyTouch 3G, an HTC smartphone powered by Google Android
that debuted to lots of fanfare this summer, topped the list of the
worst radiation offenders. However, other popular smartphones
dominated the list as well, especially BlackBerries and Treos. The
BlackBerry Curve, the best-selling smartphone on the market in 2009,
was a close second on the list, and it was joined in the top 10 by its
cousins, the BlackBerry Pearl and the BlackBerry Bold.
The 10 smartphones with lowest radiation

   1. Nokia 9300i (0.21 W/kg)
   2. Nokia 7710 (0.22 W/kg)
   3. T-Mobile MDA Wiza200 (0.28 W/kg)
   4. Samsung Impression SGH-a877 (0.35 W/kg)
   5. Nokia 9300 (0.44 W/kg)
   6. Samsung Propel Pro SGH-i627 (0.47 W/kg)
   7. Samsung Gravity SGH-t459 (0.49 W/kg)
   8. BlackBerry Storm 9530 (0.57 W/kg)
   9. Nokia E90 (0.59 W/kg)
  10. Nokia N96 (0.68 W/kg)

Nokia, with five models in this top 10, and Samsung with three, were
clearly the winners in terms of smartphones that emit the least amount
of radiation. It’s also interesting to note that although both of
these companies produce dozens of different models, neither of them
had a single model that made the list of the worst radiation
offenders. The surprising member of the low-radiation club was the
BlackBerry Storm (RIM’s first touchscreen device) since so many of the
other popular BlackBerries were on the high-emitters list.
Other notables, from lowest to highest

    * HTC Touch Pro (0.91 W/kg)
    * Palm Pre (0.92 W/kg)
    * iPhone (0.97 W/kg)
    * Samsung JACK i637 (1.04 W/kg)
    * T-Mobile’s Google G1 (1.11 W/kg)
    * Blackberry Pearl Flip 8220 (1.14 W/kg)
    * iPhone 3GS (1.19 W/kg)
    * Samsung BlackJack II SGH-i617 (1.20 W/kg)
    * Motorola MOTO Q 9m (1.30 W/kg)
    * iPhone 3G (1.39 W/kg)
    * BlackBerry Tour 9630 (unknown)

If there’s another phone you’d like to look up, here is the full list.
Also, when seriously evaluating any smartphone on any of these lists,
make sure you click through and look at the EWG page with the details
of the phone’s radiation emissions using different connections and
doing different activities. The number listed is the maximum radiation
rating, but it can be deceiving in some cases until you look at the
whole picture.

For example, the iPhone 3GS has a rating of 1.19 W/kg, which is a
middle-of-the-pack rating. However, 1.19 is its maximum radiation
level, which only happens when it is connected in UMTS 1900MHz mode.
In its other four modes, it averages 0.63 W/kg, which is more
consistent with the lower tier of radiation emitters.
Safety tips

As part of the report, the EWG also provided eight safety tips for
cellphone users who are concerned about radiation. Here is a quick
list of the tips. You can click through to the original list for more
detail on each of the items.

   1. Buy a low-radiation phone
   2. Use a headset or speaker
   3. Listen more, talk less
   4. Hold phone away from your body
   5. Choose texting over talking
   6. Poor signal? Stay off the phone
   7. Limit children’s phone use
   8. Skip the “radiation shield”

The EWG also offers a one-page PDF that lists all eight of these tips
along with a further explanation of each. IT professionals might
consider distributing this PDF to employees who use company cellphones
or posting it on the corporate intranet. Of course, you should consult
senior management and your legal department before distributing
something like this since it involves employee health.
Bottom line

While there isn’t conclusive scientific evidence proving that
cellphones cause illnesses or diseases in humans, the EWG report does
point to research that has shown links between prolonged cellphone use
and  brain cancer, salivary gland tumors, migraines and vertigo, and
decreased male sperm count (from carrying a cellphone in the pocket).

A lot more research still needs to be done, but in the meantime it
makes sense for mobile manufacturers to limit cellphone radiation
whenever possible and for users to be aware of which phones produce
the most radiation so that they can take steps to limit radiation
exposure as a precautionary step.

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