Lowest Radiation Phones
1.	Samsung Impression (A877) AT&T	(0.27 W/kg)
2.	Motorola Devour Verizon	(0.40 W/kg)
3.	Samsung Rugby (A837) AT&T	(0.46 W/kg)
4.	Samsung Alias 2 (U750) Verizon	(0.54 W/kg)
5.	Motorola Karma (QA1) AT&T	(0.55 W/kg)
6.	Samsung Gravity 2 (T469) T-Mobile	(0.55 W/kg)
7.	Motorola Brute (i680) Sprint	(0.59 W/kg)
8.	Samsung Omnia 2 (I920) Verizon	(0.59 W/kg)
9.	Sony Ericsson Equinox T-Mobile	(0.62 W/kg)
10.	Samsung Magnet (A257) AT&T	(0.64 W/kg)

The short answer is: nobody really knows.

Some studies say yes, other studies say no. And to complicate matters, many of the studies are funded by the handset makers themselves.

Cell phones are relatively new -- only in widespread use for the past ten years or so. The reason studies haven't been able to find a direct link between phones and brain tumors is, simply because, not enough time has passed to understand the long-term effects of cell phone usage.

Brain tumors may develop after 25 years, 50 years, or maybe even never at all. The point is, researchers need more time, decades perhaps, before they can judge the long-term health effects of constant phone use, and not just over the past ten years.

Highest Radiation Phones
1.	Motorola Rival (A455) Verizon	(1.59 W/kg)
2.	Palm Pixi Sprint	(1.56 W/kg)
3.	Motorola i335 Nextel	(1.53 W/kg)
4.	LG Rumor2 Sprint	(1.51 W/kg)
5.	RIM BlackBerry Bold (9000) AT&T	(1.51 W/kg)
6.	RIM BlackBerry Curve (8310) AT&T	(1.51 W/kg)
7.	RIM BlackBerry Curve (8320) AT&T | T-Mobile	(1.51 W/kg)
8.	Motorola Droid Verizon	(1.49 W/kg)
9.	T-Mobile Dash 3G T-Mobile	(1.47 W/kg)
10.	LG Chocolate Touch (VX8575) Verizon	(1.46 W/kg)

We aren't saying that cell phones will or will not cause brain cancer, but we can tell you which handsets have the lowest and highest radiation levels -- and give you the tools to choose to buy phones with less radiation.

The U.S. government tests each cell phone and uses a rating system called Specific Absorption Rate, or SAR, to measure how much radiation the human body absorbs.

Regulators set the SAR limit at 1.6 W/kg. In other words, no phones that radiate over 1.6 W/kg of energy can be sold in the U.S. The highest SAR value is 1.6.

But that doesn't mean it's still safe. Unfortunately, The SAR limit was established twenty years ago, when mobile phones were only available to the few, and rarely used. Nobody foresaw the widespread usage, or duration, that consumers now are using their handsets -- so regulators aren't even sure if the 1.6 limit is low enough.

Regardless, we've combed through the FCC test records to find the SAR value for each handset -- so concerned consumers can see the lowest and highest radiation phones to help their buying process.

We say handsets with a SAR value under 0.8 are "Low Radiation Phones" and devices over 1.3 are "High Radiation Phones." This is not an indication of the health danger of the devices (again, nobody knows if 1.6 is too high or low enough), but rather saying the phone is low or high compared to the handsets on the market.