Head exposure reference
Samsung · PHONE PROFILE
Samsung Galaxy S25 FE
The specifications, radiation measurements and practical choices for your phone.
Display6.7 inches
ChipsetExynos 2400 (4 nm)
FCC identifierA3LSMS731U
RF Safe source record retrieved September 12, 2026. Regional specifications and test configurations may differ.
The SAR overview.
Reported US test values · W/kg averaged over 1 g of tissue
Head SAR · cellular only1.04 W/kg65% of US localized limit
Body SAR · cellular only1.03 W/kg64% of US localized limit
Hotspot SAR · cellular only1.10 W/kg69% of US localized limit
Head SAR · simultaneous1.52 W/kg95% of US localized limit
Body SAR · simultaneous1.53 W/kg96% of US localized limit
Hotspot SAR · simultaneous1.59 W/kg99% of US localized limit
0–0.400.41–0.800.81–1.201.21+ W/kgUS localized test values · 1 g average
Colors indicate reported SAR ranges, not a safety verdict. Results depend on test configuration and regional model. A lower listed maximum does not guarantee lower everyday exposure. How to read these numbers →
Additional SAR values & source information
| Hotspot, cellular only (US) | 1.10 W/kg |
|---|---|
| Product-specific source field (US) | 1.10 W/kg |
| Head (EU, 10 g) | — W/kg |
| Body (EU, 10 g) | — W/kg |
| FCC ID | A3LSMS731U — FCC equipment search ↗ |
| Source | RF Safe original phone profile ↗ |
| Data note | Values are reported by the RF Safe source record and have not been independently re-tested here. Zero or blank source values are shown as not listed. |
Your SAR comparison, at a glance.
Cellular-only and simultaneous-transmission values, side by side.
RF Safe source chart. Green and red compare lower and higher values within this chart; they differ from the fixed SAR ranges above. Percentage differences compare test configurations and do not predict a personal exposure reduction.
Two views. One clearer picture.
RF Safe reference illustrations for this phone.
Body exposure reference
Source illustrations visualize the RF Safe record. They are not scans of an individual, a measured personal dose, or a forecast of disease. Read the numerical labels and the original test context.
A practical introduction.Read the illustrated usage guide →
BETTER PHONE HABITS
Put the numbers into practice.
Watch the phone safety introduction, then explore the illustrated guide to distance, carrying and correct QuantaCase orientation.
Explore the usage guide →Every specification, in one place.
Source specifications by category. Regional models, software and availability may differ.
General
| Phone | Samsung Galaxy S25 Fe |
|---|---|
| Technology | GSM / HSPA / LTE / 5G |
| Announced | January 1, 1970 |
| Availability (source snapshot) | Available |
| Model Names | SM-S731B, SM-S731B/DS |
Display
| Type | Dynamic AMOLED 2X, 120Hz, HDR10+, 1900 nits (peak) |
|---|---|
| Size | 6.7 inches, 110.2 cm2 (~89.2% screen-to-body ratio) |
| Resolution | 1080 x 2340 pixels, 19.5:9 ratio (~385 ppi density) |
| Protection | Corning Gorilla Glass Victus+ |
Camera
| Main Camera | Triple Camera: 50 MP, f/1.8, 24mm (wide), 1/1.57", 1.0m, dual pixel PDAF, OIS 8 MP, f/2.4, 75mm (telephoto), 1/4.4", 1.0m, PDAF, OIS, 3x optical zoom 12 MP, f/2.2, 13mm, 123 (ultrawide), 1/3.0", 1.12m |
|---|---|
| Main Features | LED flash, HDR, panorama |
| Video | 8K@30fps, 4K@30/60/120fps, 1080p@30/60/120/240fps |
| Selfie Camera | Single Camera: 12 MP, f/2.2, 26mm (wide), 1/3.2", 1.12m |
| Selfie Camera Video | 4K@30/60fps, 1080p@30/60fps; gyro-EIS |
Battery
| Type | Si/C Li-Ion 4500 mAh |
|---|---|
| Charging | 45W wired, PD, QC2 15W wireless Reverse wireless |
Hardware
| Operating system (source snapshot) | Android 15, up to 7 major Android upgrades, One UI 7 |
|---|---|
| Chipset | Exynos 2400 (4 nm) |
| CPU | 10-core (1x3.2GHz Cortex-X4 & 2x2.9GHz Cortex-A720 & 3x2.6GHz Cortex-A720 & 4x1.95GHz Cortex-A520) |
| GPU | Xclipse 940 |
| Internal Storage | 128GB 8GB RAM, 256GB 8GB RAM, 512GB 8GB RAM |
| Card Slot | No |
| Sensors | Fingerprint (under display, optical), accelerometer, gyro, compass Virtual proximity sensing Samsung DeX Circle to Search |
Connectivity
| Wi-fi | Wi-Fi 802.11 a/b/g/n/ac/6e, dual-band or tri-band (market/region dependent), Wi-Fi Direct |
|---|---|
| Bluetooth | 5.3, A2DP, LE |
| USB | USB Type-C 3.2, OTG |
| GPS | GPS, GLONASS, GALILEO, BDS |
| NFC | Yes |
| Radio | Unspecified |
Sound
| Loudspeaker | Yes, with stereo speakers |
|---|---|
| 3.5mm Jack | No |
Design
| Type | Bar |
|---|---|
| Dimensions | 161.3 x 76.6 x 7.4 mm (6.35 x 3.02 x 0.29 in) |
| Weight | 190 g (6.70 oz) |
| Colors | Dark Blue, Light Blue, Black, White |
| Build | Glass front (Gorilla Glass Victus+), glass back (Gorilla Glass Victus+), aluminum frame |
Network
| Speed | HSPA, LTE (CA), 5G |
|---|---|
| SIM | Nano-SIMNano-SIM + Nano-SIMNano-SIM + eSIMeSIM + eSIM IP68 dust tight and water resistant (immersible up to 1.5m for 30 min) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 |
| 3G Network | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 |
| 4G Network | LTE |
| 5G Network | SA/NSA/Sub6 |
Find the case for your phone.
Confirm the exact model before choosing a color.
QuantaCase RFS1 for Samsung Galaxy S25 FE
Currently unavailable · 4 options
$69.99Choose options ↗
QuantaCase is a directional shielding accessory and a habit-training tool. Correct orientation matters; a case does not make a phone risk-free. Explore the design →
Know the phone. Learn the habits.
A visual guide to distance, speakerphone, carrying and correct case orientation.
Keep exploring.
Other Samsung models with nearby reported head SAR values.
SamsungUS · 1 g
Galaxy S22
Head SAR1.03 W/kg
Body SAR1.15 W/kg
SamsungUS · 1 g
Galaxy Z Flip3
Head SAR1.05 W/kg
Body SAR1.08 W/kg
SamsungUS · 1 g
Galaxy S20
Head SAR1.07 W/kg
Body SAR1.03 W/kg
SamsungUS · 1 g
Galaxy A14 5G
Head SAR1.00 W/kg
Body SAR1.36 W/kg