Samsung Galaxy S25 vs Samsung Galaxy S21 Specs Comparison

Availability

Officially announced
Jan 22, 2025	Jan 14, 2021
Prices (MSRP)
12GB/128GB - $799 | €899 12GB/256GB - $859 12GB/512GB - $959	$800

Design

Dimensions
5.78 x 2.78 x 0.28 inches (~0.33 inches with camera bump) 146.9 x 70.5 x 7.2 mm (~8.45 mm with camera bump)	5.97 x 2.80 x 0.31 inches 151.7 x 71.2 x 7.9 mm
Weight
5.71 oz / 162.0 g	6.03 oz / 171.0 g Europe version - 169 g
Materials
Back: Glass (Corning Gorilla Glass Victus 2) Frame: Aluminum	Back: Plastic Frame: Aluminum
Resistance
Water, Dust; IP68	Water, Dust; IP68
Biometrics
Ultrasonic in-screen fingerprint	2D Face unlock, Ultrasonic in-screen fingerprint
Keys
Right: Volume control, Lock/Unlock key	Right: Volume control, Lock/Unlock key
Colors
Icy Blue, Mint, Navy, Silver Shadow	Phantom pink, Violet, Gray, White

Display

Size
6.2-inch, 91.02% screen-to-body	6.2-inch, 86.06% screen-to-body
Type
Dynamic AMOLED, 120Hz, HDR, 2600 nits	Dynamic AMOLED, 120Hz, HDR, 1300 nits
Resolution
2340x1080px, 19.5:9 ratio, 416 PPI	2400x1080px, 20:9 ratio, 424 PPI
Protection
Corning Gorilla Glass Victus 2	Corning Gorilla Glass Victus

PhoneArena Display Test

Bright Max (20% APL)
2394 (Excellent)	Untested
Bright Min
0.86 (Excellent)	1.2 (Good)

Learn more on our PhoneArena Display Test Results page.

Hardware

System chip
Snapdragon 8 Elite SM8750-AB (3 nm)	Snapdragon 888 (5 nm) Europe version - Exynos 2100 S5E9840
Processor
Octa-core 2x4.47GHz Oryon V2 PhoenixL 6x3.53GH​z Oryon V2 PhoenixM	Octa-core 1x2.84GHz Kryo 680 3x2.42GHz Kryo 680 4x1.80GHz Kryo 680 Europe version - Octa-core, 1x2.91GHz Cortex-X1, 3x2.81G​Hz Cortex-A78, 4x2.2G​Hz Cortex-A55
GPU
Adreno 830	Adreno 660 Europe version - Mali-G78 MP14
Memory
12GB (LPDDR5X)/128GB (UFS 4.0) 12GB/256GB 12GB/512GB	8GB (LPDDR5)/128GB (UFS 3.0) 8GB/256GB
Storage expansion
not expandable	not expandable
OS
Android (15), up to 7 OS updates	Android (13, 12, 11)

PhoneArena Performance Test

GeekBench 6 Single
3031	Untested
GeekBench 6 Multi
9626	Untested
3D Mark High
5959	Untested
3D Mark Low
2500	Untested

Learn more on our PhoneArena Performance Test Results page.

Battery

Type
4000 mAh, Li - Ion	4000 mAh, Li - Polymer
Charging
Fast charging Qi wireless charging, Reverse wireless charging	Qualcomm Quick Charge 2.0, USB Power Delivery, Samsung Adaptive Fast Charging Qi and Powermat wireless charging, Reverse wireless charging
Charge speed
Wired: 25.0W Wireless: 15.0W	Wired: 25.0W Wireless: 15.0W

PhoneArena Battery Tests

Battery Life Estimate

7h 6min

Browsing

18h 29min

Video

8h 1min

Gaming

12h 20min

Battery Life Estimate

4h 28min

Browsing

7h 47min

Video

7h 36min

Gaming

7h 9min

Learn more on our PhoneArena Battery Test Results page

Camera

Rear
Triple camera	Triple camera
Main camera
50 MP (OIS, PDAF) Sensor name: Samsung GN3 Aperture size: F1.8 Focal length: 24 mm Sensor size: 1/1.56" Pixel size: 1.0 μm	12 MP (OIS, PDAF) Aperture size: F1.8 Focal length: 26 mm Sensor size: 1/1.76" Pixel size: 1.8 μm
Second camera
12 MP (Ultra-wide) Sensor name: Sony IMX564 Aperture size: F2.2 Focal Length: 13 mm Sensor size: 1/2.55" Pixel size: 1.4 μm	12 MP (Ultra-wide, Autofocus) Aperture size: F2.2 Focal Length: 13 mm Sensor size: 1/2.55" Pixel size: 1.4 μm
Third camera
10 MP (Telephoto) Sensor name: Samsung S5K3K1 Optical zoom: 3.0x Aperture size: F2.4 Focal Length: 67 mm Sensor size: 1/3.94" Pixel size: 1.0 μm	64 MP (Telephoto, OIS, PDAF) Aperture size: F2.0 Focal Length: 29 mm Sensor size: 1/1.7" Pixel size: 0.8 μm
Flash
LED	LED
Video recording
8K UHD (30 fps), 4K UHD (60 fps), 1080p (240 fps) HDR, Continuous autofocus, Picture-taking during video recording	8K UHD (24 fps), 4K UHD (60 fps), 1080p (240 fps), 720p (960 fps) OIS, HDR, Hyperlapse, Continuous autofocus, Video light, EIS
Front
12 MP (HDR) Video capture: 4K UHD (60 fps)	10 MP (PDAF, HDR) Video capture: 4K UHD (60 fps)

PhoneArena Camera Tests

147

Overall

151

Photo

142

Video

N/A

Overall

N/A

Photo

N/A

Video

Learn more on our PhoneArena Camera Test Results page

Connectivity & Features

Bluetooth
5.4	5.0
WLAN
Wi-Fi 6,Wi-Fi 6E,Wi-Fi 7 Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac, ax	Wi-Fi 6,dual-band MIMO, Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac, ax
USB
Type-C, USB 3.2	Type-C, USB 3.2
Sensors
Accelerometer, Gyroscope, Compass, Barometer, Ambient light sensor, Proximity sensor	Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer, Ambient light sensor, Proximity sensor
Hearing aid compatible
M3/T4	M3/T3
Location
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning	GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Other
NFC, Ultra Wideband (UWB)	NFC, ANT+

Multimedia

Headphones
No 3.5mm jack	No 3.5mm jack
Speakers
Earpiece, Multiple speakers	Earpiece, Multiple speakers
Features
	32-Bit DAC, Dolby Atmos, aptX, Dolby Digital, Dolby Digital Plus

Cellular

5G Bands
n1, n2, n5, n7, n25, n28, n41, n66, n71, n258, n260, n261, SA, NSA, Sub-6, mmWave, 5G Ready	n2, n5, n12, n25, n41, n66, n71, n77, n260, n261, SA, NSA, Sub-6, mmWave
LTE Bands
1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 19, 20, 25, 28, 30, 71	1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 66, 71
TDD Bands
38, 39, 40, 41	38, 39, 40, 41, 46, 48
3G Bands
1, 2, 4, 5, 8	1, 2, 4, 5, 8
Data Speed
LTE-A Pro Cat 20 (2000/150 Mbit/s)	LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS
SIM type
Nano SIM, eSIM	Nano SIM

Regulatory Approval

FCC approval
Date approved: Nov 26, 2024 FCC ID value: A3LSMS931U	Date approved: Dec 08, 2020 FCC ID value: A3LSMG991U
Measured SAR
Head: 1.13 W/kg Body: 0.81 W/kg Simultaneous Transmission: 1.08 W/kg	Head: 0.36 W/kg Body: 1.08 W/kg Simultaneous Transmission: 3.96 W/kg Wireless Router: 1.09 W/kg Phablet: 2.49 W/kg

Alternative variants

With 256GB internal storage

Memory	256GB
Prices (MSRP)	$860

with 256GB storage

Memory	256GB

With 512GB internal storage

Memory	512GB

for Europe

System chip	Samsung Exynos 2100 (5 nm)
Processor	Octa-core 2900 MHz 1x2.91GHz Cortex-X1 3x2.81G​Hz Cortex-A78 4x2.2G​Hz Cortex-A55
GPU	Mali G78 MP14
Weight	5.96 oz / 169.0 g
5G Bands	SA, NSA, Sub-6
FCC approval	Date approved: Dec 18, 2020 FCC ID value: A3LSMG991B
Measured SAR	Head: 0.42 W/kg Body: 0.94 W/kg Simultaneous Transmission: 3.96 W/kg Wireless Router: 1.34 W/kg Phablet: 2.37 W/kg

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