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Samsung Galaxy A51 vs Samsung Galaxy S25 Specs Comparison

Compare mobile phone specifications of up to three devices at once. Our specs comparison tool helps you find and compare the perfect phone for your needs.

Comparison mode:
Specs Size
Differences only
7.0
Samsung Galaxy A51
7.4
Samsung Galaxy S25
Samsung Galaxy A51 Samsung Galaxy S25
Released · Dec 27, 2019
Released · Feb 07, 2025
6.5-inch · 2400 x 1080 px
6.2-inch · 2340 x 1080 px
48 MP Main · 32 MP Selfie
50 MP Main · 12 MP Selfie
4GB · 128GB
12GB · 128GB
4000 mAh
4000 mAh
Check prices Check prices

Display

Size
6.5-inch 6.2-inch
Resolution
2400 x 1080 px, 20:9 ratio, 405 PPI 2340 x 1080 px, 19.5:9 ratio, 416 PPI
Technology
Super AMOLED Dynamic AMOLED
Refresh rate
60Hz 120Hz
Screen-to-body
87.37 % 91.02 %
Peak brightness
2600 cd/m2 (nit)
Features
Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor HDR support, Scratch-resistant glass (Corning Gorilla Glass Victus 2), Ambient light sensor, Proximity sensor

Hardware

System chip
Samsung Exynos 9611 (10 nm) Qualcomm Snapdragon 8 Elite SM8750-AB (3 nm)
Processor
Octa-core, 2300 MHz, 4x 2.3GHz Cortex-A73 + 4x 1.7GHz Cortex-A53, 64-bit Octa-core, 2x 4.47GHz Oryon V2 Phoenix L + 6x 3.53GHz Oryon V2 Phoenix M
GPU
Mali-G72 MP3 Adreno 830
RAM
4GB (LPDDR4) 12GB (LPDDR5X)
Internal storage
128GB, available to use: 105.9 GB 128GB (UFS 4.0), not expandable
Storage expansion
microSDXC up to 512 GB
OS
Android (11, 10), Samsung One UI Android (15), One UI
Device type
Smartphone Smartphone

Battery

Capacity
4000 mAh 4000 mAh
Type
Li - Polymer, Not user replaceable Li - Ion, Not user replaceable
Charging
Fast charging Fast charging, Qi wireless charging, Reverse wireless charging
Max charge speed
Wired: 25.0W
Wireless: 15.0W
PhoneArena Battery Tests
Battery Life Estimate
5h 22min
Browsing
11h 35min
Video
8h 35min
Gaming
6h 40min
Battery Life Estimate
7h 6min
Browsing
18h 29min
Video
8h 1min
Gaming
12h 20min
Find out more details about battery and charging for all phones we have tested on our PhoneArena Battery Score page.

Camera

Rear
Quad camera Triple camera
Main camera
48 MP (PDAF)
Specifications:
Aperture size: F2.0
Focal length: 26 mm
Sensor size: 1/2"
Pixel size: 0.8 μm 		50 MP (OIS, PDAF)
Specifications:
Aperture size: F1.8
Focal length: 24 mm
Sensor size: 1/1.56"
Pixel size: 1.0 μm
Second camera
12 MP (Ultra-wide)
Specifications:
Aperture size: F2.2
Focal Length: 13 mm
Pixel size: 1.12 μm 		10 MP (Telephoto, OIS)
Specifications:
Optical zoom: 3.0x
Aperture size: F2.4
Focal Length: 67 mm
Sensor size: 1/3.94"
Pixel size: 1.0 μm
Third camera
5 MP (Macro)
Specifications:
Aperture size: F2.4
Focal Length: 40 mm 		12 MP (Ultra-wide)
Specifications:
Aperture size: F2.2
Focal Length: 13 mm
Sensor size: 1/2.55"
Pixel size: 1.4 μm
Fourth camera
5 MP (Depth information)
Specifications:
Aperture size: F2.2
Sensor size: 1/5"
Pixel size: 1.12 μm
Flash
LED LED
Video recording
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (240 fps)
Features:
Hyperlapse, EIS 		7680x4320 (8K UHD) (30 fps), 3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (240 fps)
Features:
HDR, Continuous autofocus, Picture-taking during video recording
Front
32 MP (HDR), Video capture: 1920x1080 (Full HD) 12 MP (HDR), Video capture: 3840x2160 (4K UHD) (60 fps)
PhoneArena Camera Tests
N/A
Overall
N/A
Photo
N/A
Video
147
Overall
151
Photo
142
Video
Find out more details about photo and video scores for all phones we have tested on our PhoneArena Camera Score page.

Design

Dimensions
6.24 x 2.90 x 0.31 inches
(158.5 x 73.6 x 7.9 mm) 		5.78 x 2.78 x 0.28 inches
(146.9 x 70.5 x 7.2 mm)
thickness with camera 0.33 inches (8.45 mm)
Weight
6.07 oz(172.0 g) 5.71 oz(162.0 g)
Materials
Back: Plastic
Frame: Plastic 		Back: Glass (Corning Gorilla Glass Victus 2)
Frame: Aluminum
Resistance
Water, Dust; IP68
Biometrics
2D Face unlock, Optical in-screen fingerprint Ultrasonic in-screen fingerprint
Keys
Right: Volume control, Lock/Unlock key Right: Volume control, Lock/Unlock key
Colors
Prism Crush black, Prism Crush white, Prism Crush pink, Prism Crush blue Icy Blue, Mint, Navy, Silver Shadow

Cellular

5G
Bands n1, n2, n5, n7, n25, n28, n41, n66, n71, n258, n260, n261, SA, NSA, Sub-6, mmWave, 5G Ready
4G (FDD)
Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 13(700 c), 14(700 PS), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 29(700 d), 30(2300 WCS), 66(AWS-3), 71(600) Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 13(700 c), 14(700 PS), 19(800 Upper), 20(800 DD), 25(1900+), 28(700 APT), 30(2300 WCS), 71(600)
4G (TDD)
Bands 38(2600), 39(1900+), 41(2600+) Bands 38(2600), 39(1900+), 40(2300), 41(2600+)
3G
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900) Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)
Data Speed
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s LTE-A Pro Cat 20 (2000/150 Mbit/s)
SIM type
Nano SIM Nano SIM, eSIM

Multimedia

Headphones
3.5mm jack No 3.5mm jack
Speakers
Earpiece, Loudspeaker Earpiece, Multiple speakers
Features
Dolby Atmos
Screen mirroring
Wireless screen share Wireless screen share
Radio
FM
Additional microphone(s)
Noise cancellation Noise cancellation

Connectivity & Features

Bluetooth
5.0 5.4
Wi-Fi
802.11 a,b,g,n,ac,dual-band
Wi-Fi Direct, Hotspot 		802.11 a,b,g,n,ac,ax(Wi-Fi 6),Wi-Fi 6E,Wi-Fi 7
Wi-Fi Direct, Hotspot
USB
Type-C (reversible), USB 2.0, Features: Charging, OTG Type-C (reversible), USB 3.2, Features: Charging, OTG
Hearing aid compatible
M3/T4
Location
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Sensors
Accelerometer, Gyroscope, Compass, Hall (for flip covers) Accelerometer, Gyroscope, Compass, Barometer
Other
NFC, ANT+ NFC, Ultra Wideband (UWB)

Regulatory Approval

FCC approval
Date approved: Nov 28, 2019
FCC ID value: A3LSMA515FN 		Date approved: Nov 26, 2024
FCC ID value: A3LSMS931U
Measured SAR
Head: 0.89 W/kg
Body: 1.18 W/kg
Simultaneous Transmission: 1.56 W/kg
Wireless Router: 1.12 W/kg
Phablet: 2.76 W/kg 		Head: 1.13 W/kg
Body: 0.81 W/kg
Simultaneous Transmission: 1.08 W/kg

Buyers information

MSRP
$ 400 $ 799 / € 899
In The Box
USB-C cable, SIM ejector tool, Paperwork

Availability

Officially announced
Dec 12, 2019 Jan 22, 2025

Alternative variants

with 128GB storage
RAM 6GB
Internal storage 128GB
With 256GB internal storage
Internal storage 256GB
MSRP $ 860
for Verizon
4G (FDD) Bands 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 13(700 c), 20(800 DD), 28(700 APT), 66(AWS-3)
3G Bands 5(850), 8(900), 2(1900), 1(2100)
With 512GB internal storage
Internal storage 512GB
for AT&T
4G (FDD) Bands 2(1900), 4(AWS-1), 5(850), 12(700 a), 13(700 c), 25(1900+), 26(850+), 66(AWS-3), 71(600)
4G (TDD) Bands 41(2600+)
for Sprint
4G (FDD) Bands 2(1900), 4(AWS-1), 5(850), 12(700 a), 13(700 c), 25(1900+), 26(850+), 66(AWS-3), 71(600)
4G (TDD) Bands 41(2600+)
for Europe
4G (FDD) Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 13(700 c), 17(700 b), 20(800 DD), 26(850+), 28(700 APT), 66(AWS-3)
4G (TDD) Bands 38(2600), 40(2300), 41(2600+)
Dual SIM Yes
FCC OKs Cingular\'s purchase of AT&T Wireless