Samsung Galaxy A51 vs Samsung Galaxy S25: Which is better?

Screen size

Galaxy A516.5"+4.6%

Galaxy S256.2"

Technology

Galaxy A51

GSM / HSPA / LTE

Galaxy S25

GSM / CDMA / HSPA / EVDO / LTE / 5G

2G bands

Galaxy A51

GSM 850 / 900 / 1800 / 1900

Galaxy S25

GSM 850 / 900 / 1800 / 1900 , CDMA 800 / 1900 & TD-SCDMA

3G bands

Galaxy A51

HSDPA 850 / 900 / 1900 / 2100 , HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100

Galaxy S25

HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 , CDMA2000 1xEV-DO

Resolution

Galaxy A511080 × 2400 px+2.5%

Galaxy S251080 × 2340 px

Refresh rate

Galaxy A51—

Galaxy S25120 Hz

Peak brightness

Galaxy A51—

Galaxy S252,600 nits

Pixel density

Galaxy A51405 ppi

Galaxy S25416 ppi+2.6%

CPU speed

Galaxy A51Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53)

Galaxy S25Octa-core (2x4.47 GHz Oryon V2 Phoenix L + 6x3.53 GHz Oryon V2 Phoenix M)+49%

RAM

Galaxy A514.0 GB

Galaxy S2512.0 GB+67%

Storage

Galaxy A5164 GB

Galaxy S25128 GB+50%

Main camera

Galaxy A5148.0 MP

Galaxy S2550.0 MP+4%

Front camera

Galaxy A5132.0 MP+63%

Galaxy S2512.0 MP

Battery

equal specs

Galaxy A514,000 mAh

Galaxy S254,000 mAh

Wired charging

Galaxy A5115 W

Galaxy S2525 W+40%

Weight

Galaxy A51172 g

Galaxy S25162 g+6.2%

Thickness

Galaxy A517.9 mm

Galaxy S257.2 mm+9.7%

IP rating

Galaxy A51Glass front (Gorilla Glass 3), plastic back, plastic frame

Galaxy S25IP68

Wi‑Fi

Galaxy A51Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct

Galaxy S25Wi-Fi 802.11 a/b/g/n/ac/6e/7, tri-band, Wi-Fi Direct

Bluetooth

Galaxy A515.0, A2DP, LE

Galaxy S255.4, A2DP, LE+7.4%

USB

Galaxy A51USB Type-C 2.0, OTG

Galaxy S25USB Type-C 3.2, DisplayPort 1.2, OTG+38%

5G support

Galaxy A51No

Galaxy S25Yes+100%

NFC

equal specs

Galaxy A51Yes

Galaxy S25Yes

3.5mm jack

Galaxy A51Yes+100%

Galaxy S25No

SD card

Galaxy A51Yes+100%

Galaxy S25No

Stereo speakers

Galaxy A51—

Galaxy S25Yes

Speed

Galaxy A51

HSPA, LTE

Galaxy S25

HSPA, LTE (up to 7CA), 5G

5G bands

Galaxy A51

Galaxy S25

1, 2, 3, 5, 7, 8, 12, 20, 25, 26, 28, 38, 40, 41, 66, 75, 77, 78 SA/NSA/Sub6 - International, 1, 2, 5, 7, 25, 28, 41, 66, 71, 77, 78, 257, 258, 260, 261 SA/NSA/Sub6/mmWave - USA unlocked

Announced

Galaxy A51

2019, December 12. Released 2019, December 16

Galaxy S25

2025, January 22

Status

Galaxy A51

Discontinued

Galaxy S25

Available. Released 2025, February 03

Dimensions

Galaxy A51

158.5 x 73.6 x 7.9 mm (6.24 x 2.90 x 0.31 in)

Galaxy S25

146.9 x 70.5 x 7.2 mm (5.78 x 2.78 x 0.28 in)

Weight

Galaxy A51

172 g (6.07 oz)

Galaxy S25

162 g (5.71 oz)

Build

Galaxy A51

Glass front (Gorilla Glass 3), plastic back, plastic frame

Galaxy S25

Glass front (Gorilla Glass Victus 2), glass back (Gorilla Glass Victus 2), aluminum frame

SIM

Galaxy A51

· Nano-SIM· Nano-SIM + Nano-SIM

Galaxy S25

· Nano-SIM + Nano-SIM + eSIM + eSIM (max 2 at a time) - INT· Nano-SIM + eSIM + eSIM (max 2 at a time) - USA· Nano-SIM + Nano-SIM - CN

Other

Galaxy A51

Galaxy S25

IP68 dust tight and water resistant (immersible up to 1.5m for 30 min) Armor aluminum 2 frame

Type

Galaxy A51

Super AMOLED

Galaxy S25

Dynamic LTPO AMOLED 2X, 120Hz, HDR10+, 2600 nits (peak)

Size

Galaxy A51

6.5 inches, 102.0 cm2 (~87.4% screen-to-body ratio)

Galaxy S25

6.2 inches, 94.4 cm2 (~91.1% screen-to-body ratio)

Resolution

Galaxy A51

1080 x 2400 pixels, 20:9 ratio (~405 ppi density)

Galaxy S25

1080 x 2340 pixels, 19.5:9 ratio (~416 ppi density)

Protection

Galaxy A51

Corning Gorilla Glass 3

Galaxy S25

Corning Gorilla Glass Victus 2, Mohs level 5

Galaxy A51

Android 10, upgradable to Android 13, One UI 5

Galaxy S25

Android 15, up to 7 major Android upgrades, One UI 8

Chipset

Galaxy A51

Exynos 9611 (10 nm)

Galaxy S25

Qualcomm SM8750-AC Snapdragon 8 Elite (3 nm)

CPU

Galaxy A51

Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53)

Galaxy S25

Octa-core (2x4.47 GHz Oryon V2 Phoenix L + 6x3.53 GHz Oryon V2 Phoenix M)

GPU

Galaxy A51

Mali-G72 MP3

Galaxy S25

Adreno 830 (1200 MHz)

Card slot

Galaxy A51

microSDXC (dedicated slot)

Galaxy S25

Internal

Galaxy A51

64GB 4GB RAM, 64GB 6GB RAM, 128GB 4GB RAM, 128GB 6GB RAM, 128GB 8GB RAM, 256GB 6GB RAM, 256GB 8GB RAM

Galaxy S25

128GB 12GB RAM, 256GB 12GB RAM, 512GB 12GB RAM

Other

Galaxy A51

UFS 2.0

Galaxy S25

UFS 4.0

Quad

Galaxy A51

48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8µm, PDAF 12 MP, f/2.2, 123˚ (ultrawide) 5 MP (macro) Auxiliary lens

Galaxy S25

Features

Galaxy A51

LED flash, panorama, HDR

Galaxy S25

Best Face, LED flash, auto-HDR, panorama

Video

Galaxy A51

4K@30fps, 1080p@30/120fps; gyro-EIS

Galaxy S25

8K@24/30fps, 4K@30/60fps, 1080p@30/60/120/240fps, 10-bit HDR, HDR10+, stereo sound rec., gyro-EIS

Triple

Galaxy A51

Galaxy S25

50 MP, f/1.8, 24mm (wide), 1/1.56", 1.0µm, dual pixel PDAF, OIS 10 MP, f/2.4, 67mm (telephoto), 1/3.94", 1.0µm, PDAF, OIS, 3x optical zoom 12 MP, f/2.2, 13mm, 120˚ (ultrawide), 1/2.55" 1.4µm, Super Steady video

Single

Galaxy A51

32 MP, f/2.2, 26mm (wide), 1/2.8", 0.8µm

Galaxy S25

12 MP, f/2.2, 26mm (wide), 1/3.2", 1.12µm, dual pixel PDAF

Features

Galaxy A51

HDR

Galaxy S25

HDR, HDR10+

Video

Galaxy A51

4K@30fps, 1080p@30fps

Galaxy S25

4K@30/60fps, 1080p@30fps

Loudspeaker

Galaxy A51

Yes

Galaxy S25

Yes, with stereo speakers

3.5mm jack

Galaxy A51

Yes

Galaxy S25

Other

Galaxy A51

Galaxy S25

High-bitrate audio support

WLAN

Galaxy A51

Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct

Galaxy S25

Wi-Fi 802.11 a/b/g/n/ac/6e/7, tri-band, Wi-Fi Direct

Bluetooth

Galaxy A51

5.0, A2DP, LE

Galaxy S25

5.4, A2DP, LE

Positioning

Galaxy A51

GPS, GLONASS, GALILEO, BDS

Galaxy S25

GPS, GLONASS, BDS, GALILEO, QZSS

NFC

Galaxy A51

Yes

Galaxy S25

Yes

Radio

Galaxy A51

FM radio

Galaxy S25

USB

Galaxy A51

USB Type-C 2.0, OTG

Galaxy S25

USB Type-C 3.2, DisplayPort 1.2, OTG

Sensors

Galaxy A51

Fingerprint (under display, optical), accelerometer, gyro, compass

Galaxy S25

Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer

Other

Galaxy A51

Virtual proximity sensing ANT+

Galaxy S25

Samsung DeX, Samsung Wireless DeX (desktop experience support)

Type

Galaxy A51

Li-Po 4000 mAh, non-removable

Galaxy S25

Li-Ion 4000 mAh

Charging

Galaxy A51

15W wired

Galaxy S25

25W wired, PD3.0, 50% in 30 min 15W wireless (Qi2 Ready) 4.5W reverse wireless

Colors

Galaxy A51

Prism Crush Black, Prism Crush White, Prism Crush Blue, Prism Crush Pink

Galaxy S25

Icy Blue, Mint, Navy, Silver Shadow, Pink Gold, Coral Red, Blue Black

Models

Galaxy A51

SM-A515F, SM-A515F/DSN, SM-A515F/DS, SM-A515F/DST, SM-A515F/DSM, SM-A515F/N, SM-A515U, SM-A515U1, SM-A515W, SM-A515X, SM-S515DL

Galaxy S25

SM-S931B, SM-S931B/DS, SM-S931U, SM-S931U1, SM-S931W, SM-S931N, SM-S9310, SM-S931E, SM-S931E/DS

SAR

Galaxy A51

0.80 W/kg (head) 0.67 W/kg (body)

Galaxy S25

1.13 W/kg (head) 0.92 W/kg (body)

SAR EU

Galaxy A51

0.37 W/kg (head) 1.59 W/kg (body)

Galaxy S25

1.29 W/kg (head) 1.36 W/kg (body)

Price

Galaxy A51

About 100 EUR

Galaxy S25

$ 799.99 / C$ 679.99 / £ 429.99 / € 589.90 / ₹ 74,999

Galaxy A51 vs Galaxy S25

Which is better?

Choose Galaxy A51 for

Choose Galaxy S25 for

Biggest differences

Galaxy A51

Galaxy S25

Head-to-head comparison

Display

Specifications Comparison

Network

Performance

Cameras

Battery

Build

Connectivity

Display

Performance

Cameras

Battery

Build

Connectivity

Launch

Body

Display

Platform

Memory

Main Camera

Selfie camera

Sound

Comms

Features

Battery

Misc