Samsung · 2024
Galaxy S24 SAR Value
Head SAR 1.23 W/kg · Body SAR 1.14 W/kg per FCC testing (FCC ID A3LSMS921U). The FCC limit is 1.6 W/kg averaged over 1 gram of tissue.
Head SAR (FCC)
1.23
W/kg averaged over 1g tissue
Body SAR
1.14 W/kg
(71% of FCC limit)
FCC ID
A3LSMS921U
Released 2024
Head SAR vs FCC Limit
Moderate (50–80% of FCC limit)
Visualizes head SAR (1.23 W/kg = 77%) against the FCC ceiling of 1.6 W/kg.
How to read the Galaxy S24 SAR value
The head and body results shown above are separate maximum values from different test positions. Do not add or average them; neither is a typical daily exposure score. Specific absorption rate is a compliance metric for absorbed radiofrequency energy; the measured result also depends on the test field, orientation, and model used for that test. [1]
Use the head result for the phone-at-ear test context and the body result for the documented body-worn test context. Neither value predicts the output during every call. For a practical reduction step, move the phone away from your body, use a hands-free option, keep calls shorter, and make calls where the network signal is strong. [2]
When comparing phones, confirm that the values use the same averaging standard and test position. For your own Galaxy S24, follow Samsung's instructions for carrying and operating the exact model. Browse the full SAR database for other devices, but keep unlike test conditions separate. [1]
Context
What this number means
At 1.23 W/kg, the Galaxy S24's head SAR is on the higher end of currently sold smartphones — about 77% of the FCC's 1.6 W/kg ceiling. It's still FCC-certified and below the legal limit, but reports a higher peak than many other modern phones.
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 S24 compare?
Other Samsung models with similar SAR profiles.
Practical Steps
Reduce real exposure from your Galaxy S24
Create distance during calls
Use speakerphone or a hands-free option when practical. Keeping the phone away from your head lowers exposure from that source.
Call where signal is strong
A phone may transmit at higher power when the network signal is weak. A stronger signal and shorter calls are simple ways to reduce exposure.
Check the model instructions
Body SAR test spacing can vary by device and test configuration. Use the manufacturer's instructions for this exact model instead of assuming one spacing applies to every phone.
For a laptop or another nearby wireless device at a desk, a conductive layer can reduce RF through the covered path. See how the RADIHALT blanket is made and sized before deciding whether it fits your setup. Phone SAR figures do not measure blanket performance.
Source: UK Health Security Agency guidance on reducing mobile-phone exposure.
Galaxy S24 SAR FAQ
Frequently asked questions
What is the SAR value of the Galaxy S24?
The Galaxy S24 has a head SAR of 1.23 W/kg and a body SAR of 1.14 W/kg per FCC testing (FCC ID A3LSMS921U). Both values are measured against the U.S. FCC limit of 1.6 W/kg averaged over 1 gram of tissue.
Is the Galaxy S24 safe to use?
The Galaxy S24's FCC filing reports head and body SAR values below the U.S. 1.6 W/kg compliance limit under standardized laboratory conditions. SAR is a peak-exposure compliance metric, not a prediction of typical daily exposure or a complete health-risk assessment. Actual exposure varies with signal strength, use, and distance from the body.
How does the Galaxy S24 compare to other phones?
At 1.23 W/kg head SAR, the Galaxy S24 sits at 77% 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 S24'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 A3LSMS921U). Last reviewed April 2026.
Using a laptop or another nearby device?
The RADIHALT copper-nickel blanket is made for directional RF shielding across a lap or work surface. Explore the construction, sizes, and evidence to see whether it suits your setup.
