Measurements of mobile phone radiation

STUK – the Radiation and Nuclear Safety Authority, Finland – is the authority responsible for monitoring the radiation safety of mobile phones by carrying our random testing of different models. Testing began in spring 2003.

The tests measure the SAR (specific absorption rate) value, which indicates the thermal energy absorbed into the area of the head from the mobile phone.

A decree issued by the Ministry of Social Affairs and Health states the maximum permissible SAR value as being 2 watts per kg. If the SAR value is below this, the tissue does not heat up significantly.

The mobile phone manufacturer must ensure the conformity of the product before it is released onto the market. Through random testing, STUK sees that the SAR values of the mobile phone models on the market do not exceed the statutory maximum value. STUK also aims to provide citizens with reliable comparative information about the radiation characteristics of different mobile phones on the market.

In radiation testing, SAR is measured using SAR test equipment that meets the requirements of the international IEC 62209-1 standard. STUK’s measuring method differs from the standard in that the tests are done using only phone frequencies available in Finland and with the phone operating only in the transmission of speech.

The principle of the test is that the measured SAR corresponds to the maximum permissible exposure caused by the phone. In the test, the phone operates constantly at full power. The phone’s technology, the different operating positions and the anatomical features of the user's head from children to adults are taken into account in the test.

The phones to be measured are chosen at random, primarily from amongst the best-selling models. Every year, STUK measures the SAR values of about 15 different models.

Mobile phones tested by STUK

STUK measures the SAR value of a mobile phone when the phone is transmitting speech at full power. The mobile phone manufacturers measure the SAR value, both when the phone is transmitting speech and when it is transmitting data. This partially explains the greater values reported by manufacturers for some of the phones.

Model of phone

SAR measured by STUK (W/kg)

SAR reported by manufacturer (W/kg)

Apple    
iPhone 4 1,07 0,93
iPhone 4S 0,712 0,988
Doro    
Doro PhoneEasy 345 0,52 0,692
HTC    
HTC Desire 0,73 0,752
HTC 7 Mozart 0,569 0,538
HTC 8S 0,518 0,721
Huawei    
U8850-1 0,59 0,761
Insmat    
BBM-820 0,44 0,198
LG     
LG C1100 1,00 1,12
LG KF600 0,44 0,471
LG KG110 1,12 0,728
LG KG275 0,96 0,956
LG KU250 1,23 1,24
LG L3100 1,23 0,30
 LG Optimus L7 0,709 0,76
Motorola    
Motorola C139 0,87 0,97
Motorola C200 0,80 0,78

Motorola C350

0,54

0,90

Motorola C550 0,79 0,71
Motorola C650 0,56 0,87
Motorola DEFY+ 0,804 1,09
Motorola F3 0,54 0,72
Motorola L6 1,13 1,33
Motorola T191 0,96 1,01

Motorola V150

0,56

0,67

Motorola V180

0,77 0,87
Motorola W180 0,61 0,51
Nokia    
 Nokia 113  1,18  1,46
Nokia 1100 0,68 0,67
Nokia 1112 0,65 0,78
Nokia 1600 0,62 0,82

Nokia 2100

0,55

0,55

Nokia 2330 Classic 0,88 0,98
Nokia 2600 0,53 0,80
Nokia 2610 0,58 0,56
Nokia 2630 0,65 0,70
Nokia 2650 0,48 0,54
Nokia 2690 0,48 0,66
Nokia 2720 0,68 0,96
Nokia 2760 0,82 0,97
Nokia 303 Asha 0,60 0,79

Nokia 3100

0,63

0,76

Nokia 3200 0,55 0,56
Nokia 3220 0,59 0,78

Nokia 3310

0,91

0,96

Nokia 3510

0,58

0,66

Nokia 3720 Classic 0,51 0,48
Nokia 5100 0,47 0,48
Nokia 5140 0,86 0,77
Nokia 5030 XpressMusic 0,94 1,06
Nokia 5230 XpressMusic 0,54 1,10
Nokia 6021 0,37 0,72
Nokia 6030 0,62 0,70
Nokia 6060 0,65 0,77
Nokia 6085 0,71 1,15

Nokia 6100

0,61

0,60

Nokia 6103 0,48 0,75
Nokia 6151 0,84 1,02
Nokia 6220 0,65 0,66
Nokia 6270 0,28 0,74
Nokia 6600i 0,33 0,35

Nokia 6610

0,97

0,63

Nokia 6630 0,69 0,83
Nokia 6700 Classic 0,29 0,41
Nokia 6810 0,87 0,82
Nokia 6822 0,71 0,67
Nokia 7230 0,62 0,97
Nokia 9500 Communicator 0,27 0,49
 Nokia Asha 303  0,60  0,79
Nokia C5 0,66 1,34
Nokia E51 0,97 1,47
Nokia E52 0,81 1,05
Nokia E65 0,53 0,87
Nokia E7 0,29 0,56
Nokia E71 0,53 1,33
Nokia E72 0,73 1,31
 Nokia Lumia 710  0,993  1,3
 Nokia Lumia 820  0,537  0,79
Nokia N70 1,01 0,95
Nokia N73 0,85 1,12
Nokia N97 Mini 0,50 0,67
Nokia N-Gage QD 0,48 0,57
 Nokia Lumia 920  0,697  0,68
Nu:fone    
Nu:fone Classic 0,86 -
Nu:fone Two 0,69 -
Samsung    
Samsung C3050 0,48 0,709
Samsung E1080 0,70 0,645
Samsung Galaxy Ace 0,70 0,84
Samsung GT-SC5230 0,70 0,531
Samsung SGH-A800 0,88 0,96
Samsung SGH-B100 0,77 0,91

Samsung SGH-C100

0,74

0,60

Samsung SGH-E330 1,17 0,90
Samsung SGH-L760 0,78 0,554
Samsung SGH-X100 0,54 0,76
Samsung SGH-X200 0,87 0,74
Samsung SGH-X300 0,39 0,58

Samsung SGH-X450

1,13 0,98

Samsung SGH-X460

0,79

0,846

Samsung SGH-X510

0,77 0,781
Samsung SGH-X680 0,59 0,801

Samsung SGH-X820

1,15 0,639

Samsung SGH-Z540

0,38 0,54
Siemens    

Siemens A55

0,45

0,56

Siemens A60 0,75 0,67
Siemens A65 0,28 0,49
Siemens A70 0,35 0,52

Siemens CF62

0,75 0,75

Siemens M55

0,80 0,64

Siemens MC60

0,60

0,67

Siemens ME45

1,12

0,98

SonyEricsson    
SonyEricsson F305 0,65 0,67
SonyEricsson J230i 0,70 0,98
SonyEricsson J300i 1,31 1,02

SonyEricsson K500i

0,53 0,53
SonyEricsson T230 0,50 0,74

SonyEricsson T310

0,53

0,61

SonyEricsson T630

0,85 0,88
SonyEricsson W100i 0,99 1,03
SonyEricsson W200i 0,72 0,81
SonyEricsson W300i 1,03 1,20
SonyEricsson W350i 1,41 1,46
SonyEricsson Z200 0,77 0,94
SonyEricsson Z300 0,90 0,75
SonyEricsson Z310i 0,43 0,7
 Sony Experia ST21i  0,957  1,62
Teddyfone 0,65 0,168
Telme    
Telme C115 0,91 0,873
 ViewSonic    
 ViewSonic V350  0,735  0,761
 Wiko    
 Wiko Cinc Five  0,42  0,639
ZTE    
ZTE Blade 0,94 1,35
Average 0,71 0,80
Maximum 1,41 1,62
Minimum 0,27 0,17
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  • Vesa Moilanen / Laboratory Engineer