Screen size
Galaxy S20 UltraWinner: 6.9"+10%
Galaxy S256.2"
Quick verdict
Galaxy S20 Ultra leads the measured specs 8-7.
Measured wins
Galaxy S20 Ultra
8
spec wins
Overall winner
Ties
8
equal specs
Galaxy S25
7
spec wins
Screen size
Technology
Galaxy S20 Ultra
GSM / CDMA / HSPA / EVDO / LTE
Galaxy S25
GSM / CDMA / HSPA / EVDO / LTE / 5G
2G bands
Galaxy S20 Ultra
GSM 850 / 900 / 1800 / 1900 , CDMA 800 / 1900 & TD-SCDMA
Galaxy S25
GSM 850 / 900 / 1800 / 1900 , CDMA 800 / 1900 & TD-SCDMA
3G bands
Galaxy S20 Ultra
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 , CDMA2000 1xEV-DO
Galaxy S25
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 , CDMA2000 1xEV-DO
4G bands
Galaxy S20 Ultra
Resolution
Refresh rate
equal specsPeak brightness
Pixel density
CPU speed
RAM
equal specsStorage
equal specsMain camera
Front camera
Battery
Wired charging
Weight
Thickness
IP rating
equal specsWi‑Fi
Bluetooth
USB
equal specs5G support
NFC
equal specs3.5mm jack
equal specsSD card
Stereo speakers
equal specs1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66
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
Speed
Galaxy S20 Ultra
HSPA 42.2/5.76 Mbps, LTE (7CA) Cat20 2000/200 Mbps
Galaxy S25
HSPA, LTE (up to 7CA), 5G
5G bands
Galaxy S20 Ultra
-
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 S20 Ultra
2020, February 11
Galaxy S25
2025, January 22
Status
Galaxy S20 Ultra
Available. Released 2020, March 15
Galaxy S25
Available. Released 2025, February 03
Dimensions
Galaxy S20 Ultra
166.9 x 76 x 8.8 mm (6.57 x 2.99 x 0.35 in)
Galaxy S25
146.9 x 70.5 x 7.2 mm (5.78 x 2.78 x 0.28 in)
Weight
Galaxy S20 Ultra
220 g (7.76 oz)
Galaxy S25
162 g (5.71 oz)
Build
Galaxy S20 Ultra
Glass front (Gorilla Glass 6), glass back (Gorilla Glass 6), aluminum frame
Galaxy S25
Glass front (Gorilla Glass Victus 2), glass back (Gorilla Glass Victus 2), aluminum frame
SIM
Galaxy S20 Ultra
· Nano-SIM + eSIM· 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 S20 Ultra
IP68 dust tight and water resistant (immersible up to 1.5m for 30 min)
Galaxy S25
IP68 dust tight and water resistant (immersible up to 1.5m for 30 min) Armor aluminum 2 frame
Type
Galaxy S20 Ultra
Dynamic AMOLED 2X, 120Hz, HDR10+, 1400 nits (peak)
Galaxy S25
Dynamic LTPO AMOLED 2X, 120Hz, HDR10+, 2600 nits (peak)
Size
Galaxy S20 Ultra
6.9 inches, 114.0 cm2 (~89.9% screen-to-body ratio)
Galaxy S25
6.2 inches, 94.4 cm2 (~91.1% screen-to-body ratio)
Resolution
Galaxy S20 Ultra
1440 x 3200 pixels, 20:9 ratio (~511 ppi density)
Galaxy S25
1080 x 2340 pixels, 19.5:9 ratio (~416 ppi density)
Protection
Galaxy S20 Ultra
Corning Gorilla Glass 6
Galaxy S25
Corning Gorilla Glass Victus 2, Mohs level 5
Other
Galaxy S20 Ultra
120Hz@FHD/60Hz@QHD refresh rate
Galaxy S25
-
OS
Galaxy S20 Ultra
Android 10, upgradable to Android 13, One UI 5
Galaxy S25
Android 15, up to 7 major Android upgrades, One UI 8
Chipset
Galaxy S20 Ultra
Exynos 990 (7 nm+)Qualcomm SM8250 Snapdragon 865 5G (7 nm+)
Galaxy S25
Qualcomm SM8750-AC Snapdragon 8 Elite (3 nm)
CPU
Galaxy S20 Ultra
Octa-core (2x2.73 GHz Mongoose M5 & 2x2.50 GHz Cortex-A76 & 4x2.0 GHz Cortex-A55)Octa-core (1x2.84 GHz Cortex-A77 & 3x2.42 GHz Cortex-A77 & 4x1.80 GHz Cortex-A55)
Galaxy S25
Octa-core (2x4.47 GHz Oryon V2 Phoenix L + 6x3.53 GHz Oryon V2 Phoenix M)
GPU
Galaxy S20 Ultra
Mali-G77 MP11Adreno 650
Galaxy S25
Adreno 830 (1200 MHz)
Card slot
Galaxy S20 Ultra
microSDXC (uses shared SIM slot)
Galaxy S25
No
Internal
Galaxy S20 Ultra
128GB 12GB RAM, 512GB 16GB RAM
Galaxy S25
128GB 12GB RAM, 256GB 12GB RAM, 512GB 12GB RAM
Other
Galaxy S20 Ultra
UFS 3.0
Galaxy S25
UFS 4.0
Triple
Galaxy S20 Ultra
108 MP, f/1.8, 26mm (wide), 1/1.33", 0.8µm, PDAF, OIS 48 MP, f/3.5, 103mm (periscope telephoto), 1/2.0", 0.8µm, PDAF, OIS, 4x optical zoom, 10x hybrid zoom 12 MP, f/2.2, 13mm, 120˚ (ultrawide), 1/2.55" 1.4µm, Super Steady video 0.3 MP, TOF 3D, f/1.0, (depth)
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
Features
Galaxy S20 Ultra
LED flash, auto-HDR, panorama
Galaxy S25
Best Face, LED flash, auto-HDR, panorama
Video
Galaxy S20 Ultra
8K@24fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS & OIS
Galaxy S25
8K@24/30fps, 4K@30/60fps, 1080p@30/60/120/240fps, 10-bit HDR, HDR10+, stereo sound rec., gyro-EIS
Single
Galaxy S20 Ultra
40 MP, f/2.2, 26mm (wide), 1/2.8", 0.7µm, PDAF
Galaxy S25
12 MP, f/2.2, 26mm (wide), 1/3.2", 1.12µm, dual pixel PDAF
Features
Galaxy S20 Ultra
HDR
Galaxy S25
HDR, HDR10+
Video
Galaxy S20 Ultra
4K@30/60fps, 1080p@30fps
Galaxy S25
4K@30/60fps, 1080p@30fps
Loudspeaker
Galaxy S20 Ultra
Yes, with stereo speakers
Galaxy S25
Yes, with stereo speakers
3.5mm jack
Galaxy S20 Ultra
No
Galaxy S25
No
Other
Galaxy S20 Ultra
High-bitrate audio support Tuned by AKG
Galaxy S25
High-bitrate audio support
WLAN
Galaxy S20 Ultra
Wi-Fi 802.11 a/b/g/n/ac/6, 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 S20 Ultra
5.0, A2DP, LE
Galaxy S25
5.4, A2DP, LE
Positioning
Galaxy S20 Ultra
GPS, GLONASS, BDS, GALILEO
Galaxy S25
GPS, GLONASS, BDS, GALILEO, QZSS
NFC
Galaxy S20 Ultra
Yes
Galaxy S25
Yes
Radio
Galaxy S20 Ultra
FM radio (USA & Canada only)
Galaxy S25
No
USB
Galaxy S20 Ultra
USB Type-C 3.2, OTG
Galaxy S25
USB Type-C 3.2, DisplayPort 1.2, OTG
Sensors
Galaxy S20 Ultra
Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer
Galaxy S25
Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer
Other
Galaxy S20 Ultra
Samsung DeX, Samsung Wireless DeX (desktop experience support) ANT+
Galaxy S25
Samsung DeX, Samsung Wireless DeX (desktop experience support)
Type
Galaxy S20 Ultra
Li-Ion 5000 mAh
Galaxy S25
Li-Ion 4000 mAh
Charging
Galaxy S20 Ultra
45W wired, PD3.0 15W wireless (Qi) 4.5W reverse wireless
Galaxy S25
25W wired, PD3.0, 50% in 30 min 15W wireless (Qi2 Ready) 4.5W reverse wireless
Colors
Galaxy S20 Ultra
Cosmic Grey, Cosmic Black, Cloud White
Galaxy S25
Icy Blue, Mint, Navy, Silver Shadow, Pink Gold, Coral Red, Blue Black
Models
Galaxy S20 Ultra
SM-G988B/DS
Galaxy S25
SM-S931B, SM-S931B/DS, SM-S931U, SM-S931U1, SM-S931W, SM-S931N, SM-S9310, SM-S931E, SM-S931E/DS
SAR
Galaxy S20 Ultra
0.94 W/kg (head) 0.95 W/kg (body)
Galaxy S25
1.13 W/kg (head) 0.92 W/kg (body)
SAR EU
Galaxy S20 Ultra
0.32 W/kg (head) 1.56 W/kg (body)
Galaxy S25
1.29 W/kg (head) 1.36 W/kg (body)
Price
Galaxy S20 Ultra
About 690 EUR
Galaxy S25
$ 799.99 / C$ 679.99 / £ 429.99 / € 589.90 / ₹ 74,999