Screen size
Galaxy S25Winner: 6.2"
Z520—
Quick verdict
Galaxy S25 leads the measured specs 19-2.
Measured wins
Galaxy S25
19
spec wins
Overall winner
Ties
2
equal specs
Z520
2
spec wins
Screen size
Technology
Galaxy S25
GSM / CDMA / HSPA / EVDO / LTE / 5G
Z520
GSM / UMTS
2G bands
Galaxy S25
GSM 850 / 900 / 1800 / 1900 , CDMA 800 / 1900 & TD-SCDMA
Z520
GSM 900 / 1800 / 1900
3G bands
Galaxy S25
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 , CDMA2000 1xEV-DO
Z520
UMTS 2100
4G bands
Galaxy S25
1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66 - International, 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 29, 30, 38, 39, 40, 41, 48, 66, 71 - USA unlocked
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
Front camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
5G support
NFC
3.5mm jack
equal specsSD card
Stereo speakers
equal specsZ520
-
5G bands
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
Z520
-
Speed
Galaxy S25
HSPA, LTE (up to 7CA), 5G
Z520
Yes, 384 kbps
Announced
Galaxy S25
2025, January 22
Z520
2006, February
Status
Galaxy S25
Available. Released 2025, February 03
Z520
Discontinued
Dimensions
Galaxy S25
146.9 x 70.5 x 7.2 mm (5.78 x 2.78 x 0.28 in)
Z520
90 x 45 x 22.8 mm (3.54 x 1.77 x 0.90 in)
Weight
Galaxy S25
162 g (5.71 oz)
Z520
105 g (3.70 oz)
Build
Galaxy S25
Glass front (Gorilla Glass Victus 2), glass back (Gorilla Glass Victus 2), aluminum frame
Z520
-
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
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Mini-SIM
Other
Galaxy S25
IP68 dust tight and water resistant (immersible up to 1.5m for 30 min) Armor aluminum 2 frame
Z520
-
Type
Galaxy S25
Dynamic LTPO AMOLED 2X, 120Hz, HDR10+, 2600 nits (peak)
Z520
TFT, 256K colors
Size
Galaxy S25
6.2 inches, 94.4 cm2 (~91.1% screen-to-body ratio)
Z520
Resolution
Galaxy S25
1080 x 2340 pixels, 19.5:9 ratio (~416 ppi density)
Z520
240 x 320 pixels, 2.0 inch, 4:3 ratio
Protection
Galaxy S25
Corning Gorilla Glass Victus 2, Mohs level 5
Z520
-
OS
Galaxy S25
Android 15, up to 7 major Android upgrades, One UI 8
Z520
-
Chipset
Galaxy S25
Qualcomm SM8750-AC Snapdragon 8 Elite (3 nm)
Z520
-
CPU
Galaxy S25
Octa-core (2x4.47 GHz Oryon V2 Phoenix L + 6x3.53 GHz Oryon V2 Phoenix M)
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-
GPU
Galaxy S25
Adreno 830 (1200 MHz)
Z520
-
Card slot
Galaxy S25
No
Z520
microSD (dedicated slot)
Internal
Galaxy S25
128GB 12GB RAM, 256GB 12GB RAM, 512GB 12GB RAM
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40MB
Other
Galaxy S25
UFS 4.0
Z520
-
Phonebook
Galaxy S25
-
Z520
Yes
Call records
Galaxy S25
-
Z520
20 dialed, 20 received, 20 missed calls
Triple
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
Z520
-
Features
Galaxy S25
Best Face, LED flash, auto-HDR, panorama
Z520
LED flash
Video
Galaxy S25
8K@24/30fps, 4K@30/60fps, 1080p@30/60/120/240fps, 10-bit HDR, HDR10+, stereo sound rec., gyro-EIS
Z520
Yes
Single
Galaxy S25
-
Z520
2 MP
Single
Galaxy S25
12 MP, f/2.2, 26mm (wide), 1/3.2", 1.12µm, dual pixel PDAF
Z520
Yes
Features
Galaxy S25
HDR, HDR10+
Z520
-
Video
Galaxy S25
4K@30/60fps, 1080p@30fps
Z520
Loudspeaker
Galaxy S25
Yes, with stereo speakers
Z520
Yes, with stereo speakers
3.5mm jack
Galaxy S25
No
Z520
No
Other
Galaxy S25
High-bitrate audio support
Z520
Dual speaker
Alert types
Galaxy S25
-
Z520
Vibration; Downloadable polyphonic ringtones
WLAN
Galaxy S25
Wi-Fi 802.11 a/b/g/n/ac/6e/7, tri-band, Wi-Fi Direct
Z520
No
Bluetooth
Galaxy S25
5.4, A2DP, LE
Z520
1.2, A2DP
Positioning
Galaxy S25
GPS, GLONASS, BDS, GALILEO, QZSS
Z520
No
NFC
Galaxy S25
Yes
Z520
-
Radio
Galaxy S25
No
Z520
No
USB
Galaxy S25
USB Type-C 3.2, DisplayPort 1.2, OTG
Z520
Proprietary
Sensors
Galaxy S25
Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer
Z520
Other
Galaxy S25
Samsung DeX, Samsung Wireless DeX (desktop experience support)
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Video telephony & streaming MP3/AAC/AAC+ player Predictive text input Organizer Voice memo Document viewer (Word, Excel, PowerPoint, PDF)
Messaging
Galaxy S25
-
Z520
SMS, MMS, Email
Browser
Galaxy S25
-
Z520
WAP 2.0/xHTML
Games
Galaxy S25
-
Z520
Yes + downloadable
Java
Galaxy S25
-
Z520
Yes
Type
Galaxy S25
Li-Ion 4000 mAh
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Removable Li-Ion battery
Charging
Galaxy S25
25W wired, PD3.0, 50% in 30 min 15W wireless (Qi2 Ready) 4.5W reverse wireless
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-
Colors
Galaxy S25
Icy Blue, Mint, Navy, Silver Shadow, Pink Gold, Coral Red, Blue Black
Z520
Silver
Models
Galaxy S25
SM-S931B, SM-S931B/DS, SM-S931U, SM-S931U1, SM-S931W, SM-S931N, SM-S9310, SM-S931E, SM-S931E/DS
Z520
-
SAR
Galaxy S25
1.13 W/kg (head) 0.92 W/kg (body)
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-
SAR EU
Galaxy S25
1.29 W/kg (head) 1.36 W/kg (body)
Z520
-
Price
Galaxy S25
$ 799.99 / C$ 679.99 / £ 429.99 / € 589.90 / ₹ 74,999
Z520
-