Full SAR Comparison Between iPhone 4 and Galaxy-S
SAR (Specific Absorption Rate) is used to measure the energy (W) absorbed by a human body (kg) when exposed to a RF (Radio Frequency) electromagnetic field such as your cell phone signal or radiation from a nearby microwave oven.
With the current heat of phone radiation issues and as a continuing concern with cell phones, I wanted to compare the human RF absorption rates of the top 2 hottest selling smart phones in the US and worldwide – the premium Apple iPhone 4 and multi-functional Samsung Galaxy-S. While I did find some data scattered around the web, none of them referred to direct sources which led me to do my own research and here, I have come up with the data and source links from the FCC.
Since there are various measurements during a SAR test, the most important seems to be the highest measurement detected for each service bandwidth. The following chart shows you the highest reported SAR value for each carrier’s service frequency range:
|Carrier||Frequency Band||Apple iPhone 4||Samsung Galaxy-S|
|Verizon||CDMA 850Mhz||Head: 1.06W/kg
|CDMA 1900Mhz||Head: 1.18W/kg
|WLAN (Wi-Fi)||Head: 0.46W/kg
|AT&T||GSM 850 Mhz||Head: 1.00W/kg
|GSM 1900Mhz||Head: 1.17W/kg
|WLAN (Wi-Fi)||Head: 0.87W/kg
Highest SAR Value Comparison Chart for iPhone 4 and Galaxy-S
Quite obviously, the Samsung Galaxy-S is a clear winner in regards to RF absorption rates. The Galaxy-S also shows low absorption rates when compared to other Android phones as well. I hope future iPhones and other Android phones can be more competitive in this category.
One other thing I found amusing was that some iPhone users were highly noting that the SAR for the iPhone 4 was 50% lower than the 3G version when in fact the iPhone 4 measures roughly 200% higher than the Galaxy-S in most categories. With that said, I am not sure why some of the head SAR measurements can turn out lower than the body for certain tests.
But please note that both phones are well under the (IMO questionable) safety standards of the FCC (1.6W/kg).
FCC Database – Grant of Equipment Authorization
FCC ID for Samsung Fascinate Galaxy-S : A3LSCHI500
FCC ID for Apple iPhone 4 : BCG-E2422A (note: include dash when performing search)
FCC ID for Samsung Captivate Galaxy-S : A3LSGHI897
FCC ID for Apple iPhone 4 : BCG-E2380A (note: include dash when performing search)