Screen size
Galaxy S23 Ultra6.8"
Galaxy S25 UltraWinner: 6.9"+1.4%
Quick verdict
Galaxy S25 Ultra leads the measured specs 8-1.
Measured wins
Galaxy S23 Ultra
1
spec wins
Ties
14
equal specs
Galaxy S25 Ultra
8
spec wins
Overall winner
Screen size
Technology
Galaxy S23 Ultra
GSM / CDMA / HSPA / EVDO / LTE / 5G
Galaxy S25 Ultra
GSM / CDMA / HSPA / EVDO / LTE / 5G
2G bands
Galaxy S23 Ultra
GSM 850 / 900 / 1800 / 1900 , CDMA 800 / 1900 & TD-SCDMA
Galaxy S25 Ultra
GSM 850 / 900 / 1800 / 1900 , CDMA 800 / 1900 & TD-SCDMA
3G bands
Galaxy S23 Ultra
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 , CDMA2000 1xEV-DO
Galaxy S25 Ultra
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 , CDMA2000 1xEV-DO
4G bands
Resolution
Refresh rate
equal specsPeak brightness
Pixel density
CPU speed
RAM
Storage
equal specsMain camera
equal specsFront camera
equal specsBattery
equal specsWired charging
equal specsWeight
Thickness
IP rating
equal specsWi‑Fi
equal specsBluetooth
USB
equal specs5G support
equal specsNFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
equal specsGalaxy S23 Ultra
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, 46, 48, 66, 71 - USA
Galaxy S25 Ultra
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
5G bands
Galaxy S23 Ultra
1, 2, 3, 5, 7, 8, 12, 20, 25, 28, 38, 40, 41, 66, 75, 77, 78 SA/NSA/Sub6 - International, 1, 7, 28, 41, 66, 71, 78, 258, 260, 261 SA/NSA/Sub6/mmWave - USA
Galaxy S25 Ultra
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
Speed
Galaxy S23 Ultra
HSPA, LTE (up to 7CA), 5G
Galaxy S25 Ultra
HSPA, LTE (up to 7CA), 5G
Announced
Galaxy S23 Ultra
2023, February 01
Galaxy S25 Ultra
2025, January 22
Status
Galaxy S23 Ultra
Available. Released 2023, February 17
Galaxy S25 Ultra
Available. Released 2025, February 03
Dimensions
Galaxy S23 Ultra
163.4 x 78.1 x 8.9 mm (6.43 x 3.07 x 0.35 in)
Galaxy S25 Ultra
162.8 x 77.6 x 8.2 mm (6.41 x 3.06 x 0.32 in)
Weight
Galaxy S23 Ultra
234 g (8.25 oz)
Galaxy S25 Ultra
218 g (7.69 oz)
Build
Galaxy S23 Ultra
Glass front (Gorilla Glass Victus 2), glass back (Gorilla Glass Victus 2), aluminum frame
Galaxy S25 Ultra
Glass front (Corning Gorilla Armor 2), glass back (Gorilla Glass Victus 2), titanium frame (grade 5)
SIM
Galaxy S23 Ultra
· Nano-SIM + eSIM· Nano-SIM + Nano-SIM + eSIM (max 2 at a time)
Galaxy S25 Ultra
· 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 S23 Ultra
IP68 dust tight and water resistant (immersible up to 1.5m for 30 min) Armor aluminum frame Stylus (Bluetooth integration, accelerometer, gyro)
Galaxy S25 Ultra
IP68 dust tight and water resistant (immersible up to 1.5m for 30 min) Stylus
Type
Galaxy S23 Ultra
Dynamic AMOLED 2X, 120Hz, HDR10+, 1200 nits (HBM), 1750 nits (peak)
Galaxy S25 Ultra
Dynamic LTPO AMOLED 2X, 120Hz, HDR10+, 2600 nits (peak)
Size
Galaxy S23 Ultra
6.8 inches, 114.7 cm2 (~89.9% screen-to-body ratio)
Galaxy S25 Ultra
6.9 inches, 116.9 cm2 (~92.5% screen-to-body ratio)
Resolution
Galaxy S23 Ultra
1440 x 3088 pixels, 19.3:9 ratio (~500 ppi density)
Galaxy S25 Ultra
1440 x 3120 pixels, 19.5:9 ratio (~498 ppi density)
Protection
Galaxy S23 Ultra
Corning Gorilla Glass Victus 2
Galaxy S25 Ultra
Corning Gorilla Armor 2, Mohs level 6
Other
Galaxy S23 Ultra
-
Galaxy S25 Ultra
DX anti-reflective coating
OS
Galaxy S23 Ultra
Android 13, up to 4 major Android upgrades, One UI 8
Galaxy S25 Ultra
Android 15, up to 7 major Android upgrades, One UI 8
Chipset
Galaxy S23 Ultra
Qualcomm SM8550-AC Snapdragon 8 Gen 2 (4 nm)
Galaxy S25 Ultra
Qualcomm SM8750-AC Snapdragon 8 Elite (3 nm)
CPU
Galaxy S23 Ultra
Octa-core (1x3.36 GHz Cortex-X3 & 2x2.8 GHz Cortex-A715 & 2x2.8 GHz Cortex-A710 & 3x2.0 GHz Cortex-A510)
Galaxy S25 Ultra
Octa-core (2x4.47 GHz Oryon V2 Phoenix L + 6x3.53 GHz Oryon V2 Phoenix M)
GPU
Galaxy S23 Ultra
Adreno 740
Galaxy S25 Ultra
Adreno 830 (1200 MHz)
Card slot
Galaxy S23 Ultra
No
Galaxy S25 Ultra
No
Internal
Galaxy S23 Ultra
256GB 8GB RAM, 256GB 12GB RAM, 512GB 12GB RAM, 1TB 12GB RAM
Galaxy S25 Ultra
256GB 12GB RAM, 512GB 12GB RAM, 1TB 12GB RAM, 1TB 16GB RAM
Other
Galaxy S23 Ultra
UFS 4.0
Galaxy S25 Ultra
UFS 4.0
Quad
Galaxy S23 Ultra
200 MP, f/1.7, 24mm (wide), 1/1.3", 0.6µm, multi-directional PDAF, OIS 10 MP, f/2.4, 70mm (telephoto), 1/3.52", 1.12µm, PDAF, OIS, 3x optical zoom 10 MP, f/4.9, 230mm (periscope telephoto), 1/3.52", 1.12µm, PDAF, OIS, 10x optical zoom 12 MP, f/2.2, 13mm, 120˚ (ultrawide), 1/2.55", 1.4µm, dual pixel PDAF, Super Steady video
Galaxy S25 Ultra
200 MP, f/1.7, 24mm (wide), 1/1.3", 0.6µm, multi-directional PDAF, OIS 10 MP, f/2.4, 67mm (telephoto), 1/3.52", 1.12µm, PDAF, OIS, 3x optical zoom 50 MP, f/3.4, 111mm (periscope telephoto), 1/2.52", 0.7µm, PDAF, OIS, 5x optical zoom 50 MP, f/1.9, 120˚ (ultrawide), 1/2.5", 0.7µm, dual pixel PDAF, Super Steady video
Features
Galaxy S23 Ultra
Laser AF, LED flash, auto-HDR, panorama
Galaxy S25 Ultra
Laser AF, Best Face, LED flash, auto-HDR, panorama
Video
Galaxy S23 Ultra
8K@24/30fps, 4K@30/60fps, 1080p@30/60/120/240fps, HDR10+, stereo sound rec., gyro-EIS
Galaxy S25 Ultra
8K@24/30fps, 4K@30/60/120fps, 1080p@30/60/120/240fps, 10-bit HDR, HDR10+, stereo sound rec., gyro-EIS
Single
Galaxy S23 Ultra
12 MP, f/2.2, 26mm (wide), 1/3.2", 1.12µm, dual pixel PDAF
Galaxy S25 Ultra
12 MP, f/2.2, 26mm (wide), 1/3.2", 1.12µm, dual pixel PDAF
Features
Galaxy S23 Ultra
HDR, HDR10+
Galaxy S25 Ultra
HDR, HDR10+
Video
Galaxy S23 Ultra
4K@30/60fps, 1080p@30fps
Galaxy S25 Ultra
4K@30/60fps, 1080p@30fps
Loudspeaker
Galaxy S23 Ultra
Yes, with stereo speakers
Galaxy S25 Ultra
Yes, with stereo speakers
3.5mm jack
Galaxy S23 Ultra
No
Galaxy S25 Ultra
No
Other
Galaxy S23 Ultra
High-bitrate audio support
Galaxy S25 Ultra
High-bitrate audio support
WLAN
Galaxy S23 Ultra
Wi-Fi 802.11 a/b/g/n/ac/6e, tri-band, Wi-Fi Direct
Galaxy S25 Ultra
Wi-Fi 802.11 a/b/g/n/ac/6e/7, tri-band, Wi-Fi Direct
Bluetooth
Galaxy S23 Ultra
5.3, A2DP, LE
Galaxy S25 Ultra
5.4, A2DP, LE
Positioning
Galaxy S23 Ultra
GPS, GALILEO, GLONASS, BDS, QZSS
Galaxy S25 Ultra
GPS, GLONASS, BDS, GALILEO, QZSS
NFC
Galaxy S23 Ultra
Yes
Galaxy S25 Ultra
Yes
Radio
Galaxy S23 Ultra
No
Galaxy S25 Ultra
No
USB
Galaxy S23 Ultra
USB Type-C 3.2, OTG
Galaxy S25 Ultra
USB Type-C 3.2, DisplayPort 1.2, OTG
Sensors
Galaxy S23 Ultra
Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer
Galaxy S25 Ultra
Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer
Other
Galaxy S23 Ultra
Samsung DeX, Samsung Wireless DeX (desktop experience support) Ultra Wideband (UWB) support
Galaxy S25 Ultra
Samsung DeX, Samsung Wireless DeX (desktop experience support) Ultra Wideband (UWB) support
Type
Galaxy S23 Ultra
Li-Ion 5000 mAh
Galaxy S25 Ultra
Li-Ion 5000 mAh
Charging
Galaxy S23 Ultra
45W wired, PD3.0, 65% in 30 min 15W wireless (Qi) 4.5W reverse wireless
Galaxy S25 Ultra
45W wired, PD3.0, 65% in 30 min 15W wireless (Qi2 Ready) 4.5W reverse wireless
Colors
Galaxy S23 Ultra
Phantom Black, Green, Cream, Lavender, Graphite, Sky Blue, Lime, Red, BMW M Edition
Galaxy S25 Ultra
Titanium Silver Blue, Titanium Black, Titanium White Silver, Titanium Gray, Titanium Jade Green, Titanium Jet Black, Titanium Pink Gold
Models
Galaxy S23 Ultra
SM-S918B, SM-S918B/DS, SM-S918U, SM-S918U1, SM-S918W, SM-S918N, SM-S9180, SM-S918E, SM-S918E/DS
Galaxy S25 Ultra
SM-S938B, SM-S938B/DS, SM-S938U, SM-S938U1, SM-S938W, SM-S938N, SM-S9380, SM-S938E, SM-S938E/DS
SAR
Galaxy S23 Ultra
1.12 W/kg (head) 0.92 W/kg (body)
Galaxy S25 Ultra
1.26 W/kg (head) 0.64 W/kg (body)
SAR EU
Galaxy S23 Ultra
0.96 W/kg (head) 1.40 W/kg (body)
Galaxy S25 Ultra
1.25 W/kg (head) 1.42 W/kg (body)
Price
Galaxy S23 Ultra
$ 444.44 / C$ 521.99 / £ 413.00 / € 481.98 / ₹ 94,999
Galaxy S25 Ultra
$ 1,299.99 / C$ 1,229.75 / £ 699.00 / € 846.41 / ₹ 112,990