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
Body: 1.08W/kg
Head: 0.42W/kg
Body: 0.48W/kg
CDMA 1900Mhz Head: 1.18W/kg
Body: 0.55W/kg
Head: 0.57W/kg
Body: 0.52W/kg
WLAN (Wi-Fi) Head: 0.46W/kg
Body: 0.15W/kg
Head: 0.03W/kg
Body: 0.01W/kg
AT&T GSM 850 Mhz Head: 1.00W/kg
Body: 1.11W/kg
Head: 0.38W/kg
Body: 0.70W/kg
GSM 1900Mhz Head: 1.17W/kg
Body: 0.66W/kg
Head: 0.42W/kg
Body: 0.49W/kg
WLAN (Wi-Fi) Head: 0.87W/kg
Body: 0.14W/kg
Head: 0.36W/kg
Body: 0.08W/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)


5 Responses to Full SAR Comparison Between iPhone 4 and Galaxy-S

  1. Thank you for your research, and for publicizing your research. I appreciate this.

  2. Sanket says:

    Thanku soooo much .. Thts really sme good work done..seems like ths being the cause of my head ache while on phone.. Wonder which phone is recommended wth the lowest sar level?? And more tips on the same.. Cheers

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