Screen size
Galaxy S25Winner: 6.2"+58%
i5502.6"
Quick verdict
Galaxy S25 leads the measured specs 20-3.
Measured wins
Galaxy S25
20
spec wins
Overall winner
Ties
0
equal specs
i550
3
spec wins
Screen size
Technology
Galaxy S25
GSM / CDMA / HSPA / EVDO / LTE / 5G
i550
GSM / HSPA
2G bands
Galaxy S25
GSM 850 / 900 / 1800 / 1900 , CDMA 800 / 1900 & TD-SCDMA
i550
GSM 900 / 1800 / 1900
3G bands
Galaxy S25
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 , CDMA2000 1xEV-DO
i550
HSDPA 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
SD card
Stereo speakers
i550
-
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
i550
-
Speed
Galaxy S25
HSPA, LTE (up to 7CA), 5G
i550
HSPA 3.6/0.384 Mbps
Announced
Galaxy S25
2025, January 22
i550
2007, August. Released 2008, February
Status
Galaxy S25
Available. Released 2025, February 03
i550
Discontinued
Dimensions
Galaxy S25
146.9 x 70.5 x 7.2 mm (5.78 x 2.78 x 0.28 in)
i550
115 x 53 x 13.8 mm (4.53 x 2.09 x 0.54 in)
Weight
Galaxy S25
162 g (5.71 oz)
i550
109 g (3.84 oz)
Build
Galaxy S25
Glass front (Gorilla Glass Victus 2), glass back (Gorilla Glass Victus 2), aluminum frame
i550
-
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
i550
Mini-SIM
Other
Galaxy S25
IP68 dust tight and water resistant (immersible up to 1.5m for 30 min) Armor aluminum 2 frame
i550
Trackball
Type
Galaxy S25
Dynamic LTPO AMOLED 2X, 120Hz, HDR10+, 2600 nits (peak)
i550
TFT, 256K colors
Size
Galaxy S25
6.2 inches, 94.4 cm2 (~91.1% screen-to-body ratio)
i550
2.6 inches, 20.9 cm2 (~34.3% screen-to-body ratio)
Resolution
Galaxy S25
1080 x 2340 pixels, 19.5:9 ratio (~416 ppi density)
i550
240 x 320 pixels, 4:3 ratio (~154 ppi density)
Protection
Galaxy S25
Corning Gorilla Glass Victus 2, Mohs level 5
i550
-
OS
Galaxy S25
Android 15, up to 7 major Android upgrades, One UI 8
i550
Symbian OS 9.2, Series 60 v3.1 UI
Chipset
Galaxy S25
Qualcomm SM8750-AC Snapdragon 8 Elite (3 nm)
i550
TI OMAP 2430
CPU
Galaxy S25
Octa-core (2x4.47 GHz Oryon V2 Phoenix L + 6x3.53 GHz Oryon V2 Phoenix M)
i550
330 MHz ARM 1136
GPU
Galaxy S25
Adreno 830 (1200 MHz)
i550
PowerVR MBX
Card slot
Galaxy S25
No
i550
microSD (dedicated slot)
Internal
Galaxy S25
128GB 12GB RAM, 256GB 12GB RAM, 512GB 12GB RAM
i550
150MB
Other
Galaxy S25
UFS 4.0
i550
-
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
i550
-
Features
Galaxy S25
Best Face, LED flash, auto-HDR, panorama
i550
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
i550
Yes
Single
Galaxy S25
-
i550
3.15 MP, AF
Single
Galaxy S25
12 MP, f/2.2, 26mm (wide), 1/3.2", 1.12µm, dual pixel PDAF
i550
VGA videocall camera
Features
Galaxy S25
HDR, HDR10+
i550
-
Video
Galaxy S25
4K@30/60fps, 1080p@30fps
i550
Loudspeaker
Galaxy S25
Yes, with stereo speakers
i550
Yes
3.5mm jack
Galaxy S25
No
i550
Yes
Other
Galaxy S25
High-bitrate audio support
i550
-
Alert types
Galaxy S25
-
i550
Vibration; Downloadable polyphonic, MP3 ringtones
WLAN
Galaxy S25
Wi-Fi 802.11 a/b/g/n/ac/6e/7, tri-band, Wi-Fi Direct
i550
Wi-Fi 802.11 b/g (Samsung i550w only)
Bluetooth
Galaxy S25
5.4, A2DP, LE
i550
2.0, A2DP
Positioning
Galaxy S25
GPS, GLONASS, BDS, GALILEO, QZSS
i550
GPS
NFC
Galaxy S25
Yes
i550
-
Radio
Galaxy S25
No
i550
FM radio
USB
Galaxy S25
USB Type-C 3.2, DisplayPort 1.2, OTG
i550
2.0
Sensors
Galaxy S25
Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer
i550
Other
Galaxy S25
Samsung DeX, Samsung Wireless DeX (desktop experience support)
i550
WMV/RV/MP4/3GP player MP3/WMA/WAV/RA/AAC/M4A player Organizer Document viewer (Word, Excel, PowerPoint, PDF)
Browser
Galaxy S25
-
i550
WAP 2.0/xHTML
Type
Galaxy S25
Li-Ion 4000 mAh
i550
Removable Li-Ion 1200 mAh battery
Charging
Galaxy S25
25W wired, PD3.0, 50% in 30 min 15W wireless (Qi2 Ready) 4.5W reverse wireless
i550
-
Stand-by
Galaxy S25
-
i550
Up to 360 h
Talk time
Galaxy S25
-
i550
Up to 8 h
Colors
Galaxy S25
Icy Blue, Mint, Navy, Silver Shadow, Pink Gold, Coral Red, Blue Black
i550
Black, Silver
Models
Galaxy S25
SM-S931B, SM-S931B/DS, SM-S931U, SM-S931U1, SM-S931W, SM-S931N, SM-S9310, SM-S931E, SM-S931E/DS
i550
-
SAR
Galaxy S25
1.13 W/kg (head) 0.92 W/kg (body)
i550
0.32 W/kg (head) 0.41 W/kg (body)
SAR EU
Galaxy S25
1.29 W/kg (head) 1.36 W/kg (body)
i550
0.72 W/kg (head)
Price
Galaxy S25
$ 799.99 / C$ 679.99 / £ 429.99 / € 589.90 / ₹ 74,999
i550
About 130 EUR