Samsung Galaxy S21 * RF SAFE® Radio Frequency Safe

Samsung Galaxy S21 Radiation Levels

Head SAR (Cellular Only)

Radiation Levels	Head	Body	Hot Spot
Cellular Only	0.74 W/kg	1.08 W/kg	1.11 W/kg
Wi-Fi + Cellular	1.45 W/kg	1.54 W/kg	1.58 W/kg

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Samsung Galaxy S21 SAR Level Summary:

The cellular transmission SAR values for the Samsung Galaxy S21 (FCC ID A3LSMG991U) are 0.74 W/kg (watts per kilogram) at the head and 1.08 W/kg when worn on the body. The hotspot/Airplay SAR level is 1.11 W/kg. The simultaneous transmission SAR values for Galaxy S21 (cellular plus Wi-Fi) is 1.45 W/kg at the head, 1.54 W/kg when worn on the body, and 1.58 W/kg when used as a hotspot simultaneously with other transmitters active.

Galaxy S21

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Cell Phone Usage & Radiation Exposure

Samsung Galaxy S21 Safety Tip:

How Much Will Turning Off Wi-Fi and Bluetooth Reduce Radiation?

This SAR chart reveals how turning off Wi-Fi and Bluetooth on your Samsung Galaxy S21 can significantly reduce your exposure to radiation. Our SAR comparison chart shows that by simply turning off Wi-Fi and Bluetooth transmitters, you can lower the RF radiation exposure to your head by 49%, and you can lower exposure to the body by 29.9%, when considering these differences between cellular-only (Wi-Fi/Bluetooth OFF) and simultaneous use exposure (Wi-Fi/Bluetooth ON), a wise way to reduce excessive phone radiation is to tap off unnecessary transmitters when not in use! Additionally, when using your phone as a hotspot, turning off Bluetooth can reduce your exposure by up to 42.3% according to the FCC SAR report for device number A3LSMG991U.

Samsung Galaxy S21 SAR Levels

Comparison of SAR levels between cellular-only and simultaneous exposure
Cellular Only	(% DIFF)	Wi-Fi + Cellular
0.74 W/kg	HEAD 49%	1.45 W/kg
1.08 W/kg	BODY 29.9%	1.54 W/kg
1.11 W/kg	HOTSPOT 42.3%	1.58 W/kg

Key Takeaways

Children vs Adults: Children have higher SAR levels due to thinner skulls and developing tissues, making them more vulnerable to radiation.
Wi-Fi Impact: Simultaneous use of cellular and Wi-Fi transmission increases SAR levels for all age groups.
Precautionary Measures: Using radiation protection products like QuantaCase can help mitigate these risks, especially for younger users.

By understanding these differences, parents and guardians can make informed decisions to better protect their children from excessive microwave radiation exposure, emphasizing the need for safer smartphone usage practices and protective accessories like QuantaCase.

Children vs Adults Radiation Exposure

The Specific Absorption Rate (SAR) of a mobile device measures the amount of radio frequency energy absorbed by the body during device usage.

The SAR values for the galaxy-s21 (FCC ID A3LSMG991U) are as follows:

0.74 W/kg when held at the head with cellular transmission only
1.08 W/kg when worn on the body with cellular transmission only
1.11 W/kg when used as a Hotspot or Airplay
1.45 W/kg when held at the head with simultaneous cellular and Wi-Fi transmission
1.54 W/kg when worn on the body with simultaneous cellular and Wi-Fi transmission
1.58 when used as a Hotspot simultaneously with other transmitters active.

SAR Levels
Overview
QuantaCase™
FCC SAR Report Image

Samsung Galaxy S21 - SAR Levels

FCC SAR Levels

FCC Approval Date This is the date the phone SAR test was completed before the phone's release to the public as required by law.
08 December 2020
FCC ID The FCC ID is the code used to register a device for FCC compliance
A3LSMG991U
FCC Report Link A direct link to the FCC's website for confirming SAR levels that are listed on our website - We did the homework for you!
FCC Specific Absorption Rate (SAR) Report For Manufacturer Submitted Model
US SAR Ratings USA Legal Limit is 1.6 W/kg
USA Legal Limit is 1.6 W/kg - FCC SAR testing is measured in watts per kilogram (or W/kg) averaged over ONE gram of simulated biological tissue.
Head SAR Level SAR test when held against your head when only using cellular service. Wifi and other transmitter are NOT active
0.74 W/kg
Body SAR Level SAR test when held against your body only using cellular service. Wifi and other transmitter are NOT active
1.08 W/kg
Product Specific Use SAR test when held against your body only using the phone as a hotspot. Cellular and other transmitter are NOT active
1.11 W/Kg
Simultaneous Transmission The highest possible SAR recorded with ALL transmitters active, Cellular, WiFi, and Hotspot
1.58 W/kg
Simultaneous Head The highest possible SAR test when held against your HEAD with cellular and WiFi transmitters active,
1.45 W/kg
Simultaneous Body The highest possible SAR test when held against your BODY with cellular and WiFi transmitters active,
1.54 W/kg
Hotspot SAR The highest possible SAR test when held against your BODY using the phone as a hotspot with cellular and WiFi transmitters active,
1.58 W/kg

EU SAR Level

EU SAR Ratings
European Legal Limit is 2.0 W/kg - EU SAR testing is measured in watts per kilogram (or W/kg) averaged over TEN grams of simulated biological tissue.
Head SAR Level
0.46 W/kg
Body SAR Level
1.51 W/kg

Also available with 4G/LTE only
Versions: SM-G991B, SM-G991B/DS (International); SM-G991U (USA); SM-G991U1 (USA unlocked); SM-G991W (Canada); SM-G991N (Korea); SM-G9910 (China)

Network	Technology	GSM / CDMA / HSPA / EVDO / LTE / 5G
	2G bands	GSM 850 / 900 / 1800 / 1900 – SIM 1 & SIM 2 (Dual SIM model only)
		CDMA 800 / 1900 & TD-SCDMA
	3G bands	HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
		CDMA2000 1xEV-DO
	4G bands	1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 38, 39, 40, 41, 46, 48, 66, 71 – SM-G991U1
	5G bands	2, 5, 25, 41, 66, 71, 260, 261 SA/NSA/Sub6/mmWave – SM-G991U1
	Speed	HSPA 42.2/5.76 Mbps, LTE-A (CA), 5G

Launch	Announced	2021, January 14
Launch	Status	Available. Released 2021, January 29

Body	Dimensions	151.7 x 71.2 x 7.9 mm (5.97 x 2.80 x 0.31 in)
	Weight	169 g (Sub6), 171 g (mmWave) (5.96 oz)
	Build	Glass front (Gorilla Glass Victus), plastic back, aluminum frame
	SIM	Single SIM (Nano-SIM and/or eSIM) or Dual SIM (Nano-SIM and/or eSIM, dual stand-by)
		IP68 dust/water resistant (up to 1.5m for 30 mins)

Display	Type	Dynamic AMOLED 2X, 120Hz, HDR10+, 1300 nits (peak)
	Size	6.2 inches, 94.1 cm² (~87.2% screen-to-body ratio)
	Resolution	1080 x 2400 pixels, 20:9 ratio (~421 ppi density)
	Protection	Corning Gorilla Glass Victus
		Always-on display

Platform	OS	Android 11, One UI 3.1
	Chipset	Exynos 2100 (5 nm) – International Qualcomm SM8350 Snapdragon 888 5G (5 nm) – USA/China
	CPU	Octa-core (1×2.9 GHz Cortex-X1 & 3×2.80 GHz Cortex-A78 & 4×2.2 GHz Cortex-A55) – International Octa-core (1×2.84 GHz Kryo 680 & 3×2.42 GHz Kryo 680 & 4×1.80 GHz Kryo 680) – USA/China
	GPU	Mali-G78 MP14 – International Adreno 660 – USA/China

Memory	Card slot	No
	Internal	128GB 8GB RAM, 256GB 8GB RAM
		UFS 3.1

Main Camera	Triple	12 MP, f/1.8, 26mm (wide), 1/1.76″, 1.8m, Dual Pixel PDAF, OIS 64 MP, f/2.0, 29mm (telephoto), 1/1.72″, 0.8m, PDAF, OIS, 1.1x optical zoom, 3x hybrid zoom 12 MP, f/2.2, 13mm, 120 (ultrawide), 1/2.55″ 1.4m, Super Steady video
	Features	LED flash, auto-HDR, panorama
	Video	8K@24fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS

Selfie camera	Single	10 MP, f/2.2, 26mm (wide), 1/3.24″, 1.22m, Dual Pixel PDAF
	Features	Dual video call, Auto-HDR
	Video	4K@30/60fps, 1080p@30fps

Sound	Loudspeaker	Yes, with stereo speakers
	3.5mm jack	No
		32-bit/384kHz audio Tuned by AKG

Comms	WLAN	Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct, hotspot
	Bluetooth	5.0, A2DP, LE
	GPS	Yes, with A-GPS, GLONASS, BDS, GALILEO
	NFC	Yes
	Radio	FM radio (Snapdragon model only; market/operator dependent)
	USB	USB Type-C 3.2, USB On-The-Go

Features	Sensors	Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer
		Samsung DeX, Samsung Wireless DeX (desktop experience support) Bixby natural language commands and dictation Samsung Pay (Visa, MasterCard certified)

Battery	Type	Li-Ion 4000 mAh, non-removable
	Charging	Fast charging 25W USB Power Delivery 3.0 Fast Qi/PMA wireless charging 15W Reverse wireless charging 4.5W

Misc	Colors	Phantom Gray, Phantom White, Phantom Violet, Phantom Pink
	Models	SM-G991B, SM-G991B/DS, SM-G991U, SM-G991U1, SM-G991W, SM-G991N, SM-G9910
	SAR	0.74 W/kg (head) 1.08 W/kg (body)
	SAR EU	0.46 W/kg (head) 1.51 W/kg (body)
	Price	$ 473.00 / € 702.88 / £ 559.90 / ₹ 59,879

Tests	Performance	AnTuTu: 584055 (v8) GeekBench: 3238 (v5.1) GFXBench: 60fps (ES 3.1 onscreen)
	Display	Contrast ratio: Infinite (nominal)
	Camera	Photo / Video
	Loudspeaker	-26.4 LUFS (Good)
	Battery life	Endurance rating 93h

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Samsung Galaxy S21 Radiation Levels

Head SAR (Cellular Only)

Body SAR (Cellular Only)

Hotspot SAR (Cellular Only)

Head SAR (Simultaneous)

Body SAR (Simultaneous)

Hotspot (Simultaneous)

Samsung Galaxy S21 Safety Tip: