Samsung Galaxy S24 vs Apple iPhone 15: SAR comparison

The Apple iPhone 15 lists the lower head sar, cellular only (us): 1.12 W/kg vs 1.23 W/kg for the Samsung Galaxy S24 (9% lower). Reported SAR values in W/kg; lower is shaded green and higher red within each row, for comparison only.

Open in interactive SAR Compare Samsung Galaxy S24 details Apple iPhone 15 details

Side-by-side SAR values

Samsung Galaxy S24 vs Apple iPhone 15 reported SAR and specs
Measurement	Samsung Galaxy S24	Apple iPhone 15
Head SAR, cellular only (US)	1.23 W/kg	1.12 W/kg
Body SAR, cellular only (US)	1.14 W/kg	1.09 W/kg
Head SAR, Wi-Fi + cellular (US)	1.57 W/kg	1.50 W/kg
Body SAR, Wi-Fi + cellular (US)	1.58 W/kg	1.44 W/kg
Hotspot SAR, cellular only (US)	3.08 W/kg	1.14 W/kg
Hotspot SAR, Wi-Fi + cellular (US)	3.10 W/kg	1.49 W/kg
Display: Type	Dynamic LTPO AMOLED 2X, 120Hz, HDR10+, 2600 nits (peak)	Super Retina XDR OLED, HDR10, Dolby Vision, 1000 nits (HBM), 2000 nits (peak)
Display: Size	6.2 inches, 94.4 cm2 (~90.9% screen-to-body ratio)	6.1 inches, 91.3 cm2 (~86.4% screen-to-body ratio)
Display: Resolution	1080 x 2340 pixels, 19.5:9 ratio (~416 ppi density)	1179 x 2556 pixels, 19.5:9 ratio (~461 ppi density)
Display: Protection	Corning Gorilla Glass Victus 2	Ceramic Shield glass
Hardware: Operating System	Android 14, One UI 6.1	iOS 17, upgradable to iOS 17.5.1, planned upgrade to iOS 18
Hardware: Chipset	Qualcomm SM8650-AC Snapdragon 8 Gen 3 (4 nm) - USA/Canada/ChinaExynos 2400 (4 nm) - International	Apple A16 Bionic (4 nm)
Hardware: CPU	8-core (1x3.39GHz Cortex-X4 & 3x3.1GHz Cortex-A720 & 2x2.9GHz Cortex-A720 & 2x2.2GHz Cortex-A520)10-core (1x3.2GHz Cortex-X4 & 2x2.9GHz Cortex-A720 & 3x2.6GHz Cortex-A720 & 4x1.95GHz Cortex-A520)	Hexa-core (2x3.46 GHz Everest + 4x2.02 GHz Sawtooth)
Hardware: GPU	Adreno 750 (1 GHz) - USA/Canada/ChinaXclipse 940 - International	Apple GPU (5-core graphics)
Battery: Type	Li-Ion 4000 mAh, non-removable	Li-Ion 3349 mAh, non-removable
Battery: Charging	25W wired, PD3.0, 50% in 30 min (advertised) 15W wireless (Qi/PMA) 4.5W reverse wireless	Wired, PD2.0, 50% in 30 min (advertised) 15W wireless (MagSafe) 15W wireless (Qi2) - requires iOS 17.2 update 4.5W reverse wired
Design: Type	Bar	Bar
Design: Dimensions	147 x 70.6 x 7.6 mm (5.79 x 2.78 x 0.30 in)	147.6 x 71.6 x 7.8 mm (5.81 x 2.82 x 0.31 in)
Design: Weight	167 g or 168 g (5.89 oz)	171 g (6.03 oz)
Design: Colors	Onyx Black, Marble Grey, Cobalt Violet, Amber Yellow, Jade Green, Sandstone Orange, Sapphire Blue	Black, Blue, Green, Yellow, Pink

Colors make differences within the same measurement easy to see. They do not label a phone safe or unsafe. US values use 1 g of tissue and the 1.6 W/kg limit; EU values use 10 g and 2 W/kg, so don't mix them. What SAR tells you.

Questions and answers

Which has lower head SAR, the Samsung Galaxy S24 or the Apple iPhone 15?

The Apple iPhone 15 lists the lower head sar, cellular only (us): 1.12 W/kg vs 1.23 W/kg for the Samsung Galaxy S24 (9% lower). Values are reported maximums from FCC filings as listed in the RF Safe dataset, in W/kg averaged over 1 gram of tissue.

Which has lower body SAR, the Samsung Galaxy S24 or the Apple iPhone 15?

The Apple iPhone 15 lists the lower body sar, cellular only (us): 1.09 W/kg vs 1.14 W/kg for the Samsung Galaxy S24 (4% lower). Values are reported maximums from FCC filings as listed in the RF Safe dataset, in W/kg averaged over 1 gram of tissue.

Which has lower hotspot SAR (Wi-Fi + cellular), the Samsung Galaxy S24 or the Apple iPhone 15?

The Apple iPhone 15 lists the lower hotspot sar, wi-fi + cellular (us): 1.49 W/kg vs 3.10 W/kg for the Samsung Galaxy S24 (52% lower). Values are reported maximums from FCC filings as listed in the RF Safe dataset, in W/kg averaged over 1 gram of tissue.

What is the highest reported SAR value for each phone?

Across the six US measurements, the Samsung Galaxy S24's highest listed value is 3.10 W/kg and the Apple iPhone 15's is 1.50 W/kg. The FCC limit for the head and body is 1.6 W/kg averaged over 1 gram. Wi-Fi + cellular values are simultaneous-transmission sums and are evaluated differently, so read each row on its own.

Does a lower SAR mean a phone is safer?

No. SAR is a lab compliance measurement taken at maximum power. Everyday exposure depends on signal strength, distance from the body and which radios are active. Use SAR to compare phones, not as a health score.

Where do these numbers come from?

From the RF Safe SAR dataset, compiled from FCC equipment authorization filings (FCC ID A3LSMS921U and BCG-E8427A). Nothing on this page is estimated.

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