Samsung Galaxy S26 Ultra 5g vs Samsung Galaxy S25 Ultra: SAR comparison

The Samsung Galaxy S26 Ultra 5g lists the lower head sar, cellular only (us): 1.09 W/kg vs 1.26 W/kg for the Samsung Galaxy S25 Ultra (13% lower). Reported SAR values in W/kg; lower is shaded green and higher red within each row, for comparison only.

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Side-by-side SAR values

Samsung Galaxy S26 Ultra 5g vs Samsung Galaxy S25 Ultra reported SAR and specs
Measurement	Samsung Galaxy S26 Ultra 5g	Samsung Galaxy S25 Ultra
Head SAR, cellular only (US)	1.09 W/kg	1.26 W/kg
Body SAR, cellular only (US)	1.19 W/kg	0.78 W/kg
Head SAR, Wi-Fi + cellular (US)	1.59 W/kg	1.59 W/kg
Body SAR, Wi-Fi + cellular (US)	1.57 W/kg	1.40 W/kg
Hotspot SAR, cellular only (US)	1.19 W/kg	1.19 W/kg
Hotspot SAR, Wi-Fi + cellular (US)	1.56 W/kg	1.48 W/kg
Display: Type	Dynamic LTPO AMOLED 2X, 120Hz, HDR10+, 2600 nits (peak)	Dynamic LTPO AMOLED 2X, 120Hz, HDR10+, 2600 nits (peak)
Display: Size	6.9 inches, 115.9 cm2 (~90.7% screen-to-body ratio)	6.9 inches (full rectangle); 6.8 inches accounting for rounded corners
Display: Resolution	1440 x 3120 pixels, 19.5:9 ratio (~500 ppi density)	1440 x 3120 pixels, 19.5:9 ratio (~505 ppi density)
Display: Protection	Corning Gorilla Armor 2, Mohs level 6	Corning Gorilla Armor 2
Hardware: Operating System	Android 16, up to 7 major Android upgrades, One UI 8.5	Android 15, up to 7 major Android upgrades, One UI 7
Hardware: Chipset	Qualcomm SM8850-AC Snapdragon 8 Elite Gen 5 (3 nm)	Snapdragon 8 Elite for Galaxy
Hardware: CPU	Octa-core (2x4.74 GHz Oryon V3 Phoenix L + 6x3.62 GHz Oryon V3 Phoenix M)	Octa-core (2x4.19 GHz & 6x2.90 GHz)
Hardware: GPU	Adreno 840	Adreno 830 (1.25 GHz)
Battery: Type	Li-Ion 5000 mAh	Li-Ion 5000 mAh, non-removable
Battery: Charging	60W wired, PD3.0, 75% in 30 min 25W wireless (Qi2.2) 4.5W reverse wireless	45W wired, PD3.0, 65% in 30 min (advertised) 25W wireless (Qi2/PMA) 4.5W reverse wireless
Design: Type	Bar	Bar
Design: Dimensions	163.6 x 78.1 x 7.9 mm (6.44 x 3.07 x 0.31 in)	162.8 x 77.6 x 8.2 mm (6.41 x 3.06 x 0.32 in)
Design: Weight	214 g (7.55 oz)	218 g
Design: Colors	Cobalt Violet, Sky Blue, Black, White, Silver Shadow, Pink Gold	Titanium Silverblue, Titanium Black, Titanium Whitesilver, Titanium Gray; additional colors may vary by market

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 S26 Ultra 5g or the Samsung Galaxy S25 Ultra?

The Samsung Galaxy S26 Ultra 5g lists the lower head sar, cellular only (us): 1.09 W/kg vs 1.26 W/kg for the Samsung Galaxy S25 Ultra (13% 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 S26 Ultra 5g or the Samsung Galaxy S25 Ultra?

The Samsung Galaxy S25 Ultra lists the lower body sar, cellular only (us): 0.78 W/kg vs 1.19 W/kg for the Samsung Galaxy S26 Ultra 5g (34% 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 S26 Ultra 5g or the Samsung Galaxy S25 Ultra?

The Samsung Galaxy S25 Ultra lists the lower hotspot sar, wi-fi + cellular (us): 1.48 W/kg vs 1.56 W/kg for the Samsung Galaxy S26 Ultra 5g (5% 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 S26 Ultra 5g's highest listed value is 1.59 W/kg and the Samsung Galaxy S25 Ultra's is 1.59 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 A3LSMS948U and A3LSMS938B). Nothing on this page is estimated.

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