Samsung Galaxy Z Flip4 Radiation Levels

Head SAR
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Head SAR
0.19 W/kg which is Ranked #2 at 11.88% of Legal Limit
Info:
Radiation LevelsHEAD BODY HOT SPOT
Cellular Only0.19 W/kg0.77 W/kg1.01 W/kg
Wi-Fi + Cellular1.56 W/kg1.16 W/kg1.59 W/kg



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Samsung Galaxy Z Flip4 SAR Level Summary:

The cellular transmission SAR values for the Samsung Galaxy Z Flip4 (FCC ID A3LSMF721U) are 0.19 W/kg (watts per kilogram) at the head and 0.77 W/kg when worn on the body. The hotspot/Airplay SAR level is 1.01 W/kg. The simultaneous transmission SAR values for Galaxy Z Flip4 (cellular plus Wi-Fi) is 1.56 W/kg at the head, 1.16 W/kg when worn on the body, and 1.59 W/kg when used as a hotspot simultaneously with other transmitters active.






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Samsung Galaxy Z Flip4 Safety Tip: Turning Off Wi-Fi and Bluetooth Reduces Radiation.

This SAR chart reveals how turning off Wi-Fi and Bluetooth on your Samsung Galaxy Z Flip4 can significantly reduce your exposure to radiation. Our SAR comparison chart shows that by simply turning off these transmitters, you can lower the RF radiation exposure to your head by 87.8%, and you can lower exposure to the body by 33.6%, 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 57.4% according to the FCC SAR report for device number A3LSMF721U.

Samsung Galaxy Z Flip4 SAR Levels

Comparison of SAR levels between cellular-only and simultaneous exposure
RADIATION LEVELSCELLULAR ONLY(% DIFF)SIMULTANEOUS
HEAD0.19 W/kg87.8%1.56 W/kg
BODY0.77 W/kg33.6%1.16 W/kg
HOTSPOT1.01 W/kg57.4%1.59 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.

Centered Image

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-z-flip4 (FCC ID A3LSMF721U) are as follows:

  • 0.19 W/kg when held at the head with cellular transmission only
  • 0.77 W/kg when worn on the body with cellular transmission only
  • 1.01 W/kg when used as a Hotspot or Airplay
  • 1.56 W/kg when held at the head with simultaneous cellular and Wi-Fi transmission
  • 1.16 W/kg when worn on the body with simultaneous cellular and Wi-Fi transmission
  • 1.59 when used as a Hotspot simultaneously with other transmitters active.
Network Technology GSM / CDMA / HSPA / EVDO / LTE / 5G
2G bands GSM 850 / 900 / 1800 / 1900
CDMA 800 / 1900
3G bands HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
HSDPA 850 / 900 / 1900 / 2100
CDMA2000 1xEV-DO
4G bands LTE
5G bands SA/NSA/Sub6/mmWave
Speed HSPA, LTE-A (6CA), 5G
Launch Announced 2022, August 10
Status Available. Released 2022, August 25
Body Dimensions Unfolded: 165.2 x 71.9 x 6.9 mm
Folded: 84.9 x 71.9 x 15.9-17.1 mm
Weight 187 g (6.60 oz)
Build Plastic front (opened), glass back (Gorilla Glass Victus+), aluminum frame
SIM Nano-SIM and eSIM
IPX8 water resistant (up to 1.5m for 30 mins)
Armor aluminum frame with tougher drop and scratch resistance (advertised)
Display Type Foldable Dynamic AMOLED 2X, 120Hz, HDR10+, 1200 nits (peak)
Size 6.7 inches, 101.5 cm2 (~85.4% screen-to-body ratio)
Resolution 1080 x 2640 pixels (~426 ppi density)
Cover display:
Super AMOLED, 1.9 inches, 260 x 512 pixels (Gorilla Glass Victus+)
Platform OS Android 12, upgradable to Android 13, One UI 5
Chipset Qualcomm SM8475 Snapdragon 8+ Gen 1 (4 nm)
CPU Octa-core (1×3.19 GHz Cortex-X2 & 3×2.75 GHz Cortex-A710 & 4×1.80 GHz Cortex-A510)
GPU Adreno 730
Memory Card slot No
Internal 128GB 8GB RAM, 256GB 8GB RAM, 512GB 8GB RAM
UFS 3.1
Main Camera Dual 12 MP, f/1.8, 24mm (wide), 1/1.76″, 1.8m, Dual Pixel PDAF, OIS
12 MP, f/2.2, 123 (ultrawide), 1.12m
Features LED flash, HDR, panorama
Video 4K@30/60fps, 1080p@60/240fps, 720p@960fps, HDR10+
Selfie camera Single 10 MP, f/2.4, 26mm (wide), 1.22m
Features HDR
Video 4K@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
Bluetooth 5.2, A2DP, LE
Positioning GPS, GLONASS, GALILEO, BDS
NFC Yes
Radio No
USB USB Type-C 2.0, USB On-The-Go
Features Sensors Fingerprint (side-mounted), accelerometer, gyro, proximity, compass, barometer
Samsung Pay (Visa, MasterCard certified)
Battery Type Li-Po 3700 mAh, non-removable
Charging 25W wired, 50% in 30 min (advertised)
15W wireless
4.5W reverse wireless
Misc Colors Bora Purple, Graphite, Pink Gold, Blue, Yellow, White, Navy, Khaki, Red
Models SM-F721B, SM-F721B/DS, SM-F721N, SM-F721U, SM-F721U1, SM-F721W
SAR 1.02 W/kg (head)     0.94 W/kg (body)
SAR EU 1.15 W/kg (head)     1.20 W/kg (body)
Price C$ 1,100.00 / ₹ 71,850 / $ 564.00 / £ 799.99 / € 789.90
Tests Performance AnTuTu: 685754 (v8) | 800001 (v9)
GeekBench: 3913 (v5.1)
GFXBench: 74fps (ES 3.1 onscreen)
Display Contrast ratio: Infinite (nominal)
Camera Photo / Video
Loudspeaker -27.5 LUFS (Good)

Samsung Galaxy Z Flip4 - Specs sar

General

  • Phone
    Samsung Galaxy Z Flip4
  • Technology
    GSM / CDMA / HSPA / EVDO / LTE / 5G
  • Announced
    10 August 2022
  • Status
    Available. Released 2022, August 25
  • Price
    $ 669.95 / C$ 999.99 / £ 1,019.00 / € 739.00 / ₹ 79,999
  • Model Names
    SM-F721B, SM-F721B/DS, SM-F721N, SM-F721U, SM-F721U1, SM-F721W

Display

  • Type Display Technology => A number of display technologies and types used in mobile phones => TFT (Thin Film Transistor), IPS (In-Place Switching), OLED (Organic Light Emitting Diode), AMOLED (Active-Matrix Organic Light-Emitting Diode), Super AMOLED (an even advanced version of AMOLED), Resistive Touchscreen (Resistive touchscreens contain two layer of conductive material with a very small gap between them which acts as a resistance), Capacitive Touchsceen (Capacitive touchscreen technology consists of a layer of glass coated with a transparent conductor)
    Foldable Dynamic AMOLED 2X, 120Hz, HDR10+, 1200 nits (peak)
  • Size
    6.7 inches, 101.5 cm2 (~85.4% screen-to-body ratio)
  • Resolution
    1080 x 2640 pixels (~426 ppi density)
  • Features Pixel Density (PPI) is refers to the concentration of pixels on a particular display, measured in pixels per inch (ppi). Pixel density is calculated by dividing the diagonal pixel resolution of a display by its diagonal size, higher pixel density better display quality.
    N/A
  • Display Test
    Contrast ratio: Infinite (nominal)

Camera

  • Main Camera Camera is able to capture photographs and usually videos, The most important characteristics of a camera are the resolution (measured in megapixels), lens focus type (fixed or automatic), higher megapixel cameras are known to capture higher quality photos, but not always a good measurement of the photos quality.
    Dual Camera: 12 MP, f/1.8, 24mm (wide), 1/1.76", 1.8m, Dual Pixel PDAF, OIS
    12 MP, f/2.2, 123 (ultrawide), 1.12m
  • Main Features
    LED flash, HDR, panorama
  • Video
    4K@30/60fps, 1080p@60/240fps, 720p@960fps, HDR10+
  • Selfie Camera Flash Light => There is commonly two types of flash lights are used in camera mobile phones, LED Flash (LED flash offers lower power consumption with drive circuitry that takes up very little room, LEDs can be strobed faster than any other light source), Xenon Flash (xenon flash produces an extremely intense full-spectrum white light for a very short duration)
    Single Camera: 10 MP, f/2.4, 26mm (wide), 1.22m
  • Selfie Camera Features
    HDR
  • Selfie Camera Video
    4K@30fps

Battery

  • Type Battery Type => Cell phones run on various kinds of batteries depending on the manufacturer, phone size or shape and features. There are basically four types of cell phone batteries => Lithium Polymer, Lithium Ion, Nickel Metal Hydride and Nickel Cadmium.
    Li-Po 3700 mAh, non-removable
  • Battery Test
    Endurance rating 92h
  • Charging
    25W wired, 50% in 30 min (advertised)
    15W wireless
    4.5W reverse wireless

Hardware

  • Operating System
    Android 12, upgradable to Android 13, One UI 5.1
  • Chipset Chipset is a group of integrated circuits designed to perform one or a more dedicated functions, often with real time computing constraints, Popular smartphones are equipped with more advanced embedded chipsets that can do many different tasks depending on their programming.
    Qualcomm SM8475 Snapdragon 8+ Gen 1 (4 nm)
  • CPU CPU (Central Processing Unit) mostly known as processors, CPU processes instructions in order to carry out certain functions that make your device operate properly. Processors are often described as the brain of computers, smartphones and tablets, Smartphones and tablets rely on processors to carry out their every task, Processors are an incredibly important factor in selecting any type of computing device, including your smartphone.
    Octa-core (1x3.19 GHz Cortex-X2 & 3x2.75 GHz Cortex-A710 & 4x1.80 GHz Cortex-A510)
  • GPU GPU (Graphics Processing Unit) is a single-chip processor designed to rapidly manipulate and alter memory to accelerate the creation of images in a frame buffer intended for output to a display, This includes things such as lighting effects, object transformations, and 3D motion.
    Adreno 730
  • Internal Storage Internal Storage is a data storage space (flash memory) mostly used in smartphones, tablets and other electronic devices where operating system, apps, music, photos, videos, files and other user data Is stored.
    128GB 8GB RAM, 256GB 8GB RAM, 512GB 8GB RAM
    UFS 3.1
  • Card Slot Memory Card Slot is a special slot for inserting a memory card. Memory cards allow you to expand the phone's built-in memory, A memory card (sometimes called a flash memory card or a storage card) is a small storage medium used to store data such as text, pictures, audio, and video, for use on small, portable or remote computing devices such as mobile phones, mp3 players, digital cameras.
    No
  • Sensors Sensors are electronic components that detects and responds to some type of input from the physical environment. The specific input could be light, heat, motion, moisture, pressure and location, The output is generally a signal that is converted to use in computing systems, a location sensor, such as a GPS receiver is able to detect current location of your electronic device.
    Fingerprint (side-mounted), accelerometer, gyro, proximity, compass, barometer
    Samsung Pay (Visa, MasterCard certified)
  • Performance
    AnTuTu: 685754 (v8) | 800001 (v9)
    GeekBench: 3913 (v5.1)
    GFXBench: 74fps (ES 3.1 onscreen)

Connectivity

  • Wi-Fi Wi-Fi is a popular wireless networking technology using radio waves to provide high-speed network connections that allows devices to communicate without cords or cables, Wi-Fi is increasingly becoming the preferred mode of internet connectivity all over the world.
    Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct
  • Bluetooth Bluetooth is a wireless communications technology for exchanging data between mobile phones, headsets, computers and other network devices over short distances without wires, Bluetooth technology was primarily designed to support simple wireless networking of personal consumer devices.
    5.2, A2DP, LE
  • USB
    USB Type-C 2.0, OTG
  • GPS GPS The Global Positioning System is a satellite-based radio navigation system, GPS permits users to determine their position, velocity and the time 24 hours a day, in all weather, anywhere in the world, In order to locate your position, your device or GPS receiver must have a clear view of the sky.
    GPS, GLONASS, GALILEO, BDS
  • NFC NFC (Near field communication) is a set of standards for smartphones and similar devices to establish peer-to-peer radio communications with each other by touching them together or bringing them into proximity, usually no more than a few inches.
    Yes
  • Radio
    No

Sound

  • Loudspeaker
    Yes, with stereo speakers
  • 3.5mm Jack
    No
  • Loudspeaker Test
    -27.5 LUFS (Good)

Design

  • Type Design Type called form factor refers to a mobile phone's size, shape, and style as well as the layout and position of major components of phone. There are three major form factors seen in mobile phones => bar phones, flip phones and sliding phones.
    Bar
  • Dimensions
    Unfolded: 165.2 x 71.9 x 6.9 mm Folded: 84.9 x 71.9 x 15.9-17.1 mm
  • Weight
    187 g (6.60 oz)
  • Colors
    Bora Purple, Graphite, Pink Gold, Blue, Yellow, White, Navy, Khaki, Red
  • Build
    Plastic front (opened), glass back (Gorilla Glass Victus+), aluminum frame

Network

  • Speed
    HSPA, LTE-A (6CA), 5G
  • SIM
    Nano-SIM and eSIM
    IPX8 water resistant (up to 1.5m for 30 min)
    Armor aluminum frame with tougher drop and scratch resistance (advertised)
  • 5G Network
    SA/NSA/Sub6/mmWave
  • 4G Network
    LTE
  • 3G Network
    HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
    HSDPA 850 / 900 / 1900 / 2100
    CDMA2000 1xEV-DO
  • 2G Network
    GSM 850 / 900 / 1800 / 1900
    CDMA 800 / 1900

USA SAR Level

  • FCC Approval Date
    28 August 2022
  • FCC ID
    A3LSMF721U
  • FCC Report Link
    FCC Specific Absorption Rate (SAR) Report For Manufacturer Submitted Model
  • US SAR Ratings
    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
    0.19 W/kg
  • Body SAR Level
    0.77 W/kg
  • Product Specific Use
    1.01 W/kg
  • Simultaneous Transmission
    1.59 W/kg
  • Simultaneous Head SAR
    1.56 W/kg
  • Simultaneous Body SAR
    1.16 W/kg
  • Hotspot SAR
    1.59 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
    1.15
  • Body SAR Level
    1.20

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Samsung Galaxy Z Flip4 - SAR Levels

USA SAR Level

  • FCC Approval Date
    28 August 2022
  • FCC ID
    A3LSMF721U
  • FCC Report Link
    FCC Specific Absorption Rate (SAR) Report For Manufacturer Submitted Model
  • US SAR Ratings
    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
    0.19 W/kg
  • Body SAR Level
    0.77 W/kg
  • Product Specific Use
    1.01 W/kg
  • Simultaneous Transmission
    1.59 W/kg
  • Simultaneous Head SAR
    1.56 W/kg
  • Simultaneous Body SAR
    1.16 W/kg
  • Hotspot SAR
    1.59 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
    1.15
  • Body SAR Level
    1.20