Galaxy S23 SAR Value
Head SAR 0.75 W/kg · Body SAR 0.70 W/kg per FCC testing (FCC ID A3LSMS911B). The FCC limit is 1.6 W/kg averaged over 1 gram of tissue.
Head SAR (FCC)
0.75
W/kg averaged over 1g tissue
Body SAR
0.70 W/kg
(44% of FCC limit)
FCC ID
A3LSMS911B
Released 2023
Head SAR vs FCC Limit
Low (under 50% of FCC limit)
Visualizes head SAR (0.75 W/kg = 47%) against the FCC ceiling of 1.6 W/kg.
Context
What this number means
At 0.75 W/kg, the Galaxy S23's head SAR sits in the lower band of currently sold smartphones — about 47% of the FCC's 1.6 W/kg ceiling. Many flagship phones report figures in the 1.0–1.2 W/kg range, so this device has notable headroom under the limit.
Remember: SAR is a peak-power compliance test against a tissue-mimicking phantom. Your real exposure depends on signal strength, distance from the phone, and call duration. To model actual exposure at distance, try the RADIHALT EMF Calculator.
Comparison
How does the Galaxy S23 compare?
Other Samsung models with similar SAR profiles.
Practical Steps
Reduce real exposure from your Galaxy S23
Use speakerphone or headphones
SAR is measured against the head. Keeping the phone a few inches away during calls reduces exposure substantially due to the inverse-square law.
Avoid weak-signal use
Phones boost transmit power dramatically when signal is weak. Wait for stronger signal or use Wi-Fi calling indoors when cellular bars are low.
Don't carry against skin
Body SAR is tested with a 10–15 mm spacer. Carrying the phone directly in a pocket against your skin can push real-world body exposure above the tested value.
Shield where it matters
A copper-nickel Faraday fabric (like the RADIHALT blanket) attenuates RF energy from your lap or work surface during long sessions.
Galaxy S23 SAR FAQ
Frequently asked questions
What is the SAR value of the Galaxy S23?
The Galaxy S23 has a head SAR of 0.75 W/kg and a body SAR of 0.70 W/kg per FCC testing (FCC ID A3LSMS911B). Both values are measured against the U.S. FCC limit of 1.6 W/kg averaged over 1 gram of tissue.
Is the Galaxy S23 safe to use?
The Galaxy S23 is FCC-certified, meaning it tested below the 1.6 W/kg legal limit for both head and body exposure. The FCC limit includes a roughly 50× safety margin below any observed thermal biological effect. We don't make health claims either direction — we present the FCC data so you can decide what's right for you.
How does the Galaxy S23 compare to other phones?
At 0.75 W/kg head SAR, the Galaxy S23 sits at 47% of the FCC limit. Modern flagship phones typically report head SAR values between 0.80 and 1.30 W/kg.
How can I reduce my Galaxy S23's radiation exposure?
Use speakerphone or wired/Bluetooth headphones during calls, don't carry it directly against skin in pockets, and use it where signal is strong (phones boost transmit power dramatically in weak-signal areas). Try our EMF calculator to model how distance changes your real exposure.
Source: FCC OET Equipment Authorization Database (FCC ID A3LSMS911B). Last reviewed April 2026.
Reduce daily EMF exposure.
The RADIHALT copper-nickel Faraday blanket attenuates RF energy while you work, scroll, or rest. Starting at $22.