Screen size
Galaxy S25Winner: 6.2"+65%
Z650i2.2"
Quick verdict
Galaxy S25 leads the measured specs 20-2.
Measured wins
Galaxy S25
20
spec wins
Overall winner
Ties
1
equal specs
Z650i
2
spec wins
Screen size
Technology
Galaxy S25
GSM / CDMA / HSPA / EVDO / LTE / 5G
Z650i
GSM / UMTS
2G bands
Galaxy S25
GSM 850 / 900 / 1800 / 1900 , CDMA 800 / 1900 & TD-SCDMA
Z650i
GSM 900 / 1800 / 1900
3G bands
Galaxy S25
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 , CDMA2000 1xEV-DO
Z650i
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
Z650i
-
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
Z650i
-
Speed
Galaxy S25
HSPA, LTE (up to 7CA), 5G
Z650i
Yes, 384 kbps
Announced
Galaxy S25
2025, January 22
Z650i
2006, October
Status
Galaxy S25
Available. Released 2025, February 03
Z650i
Discontinued
Dimensions
Galaxy S25
146.9 x 70.5 x 7.2 mm (5.78 x 2.78 x 0.28 in)
Z650i
101 x 51 x 15.9 mm (3.98 x 2.01 x 0.63 in)
Weight
Galaxy S25
162 g (5.71 oz)
Z650i
95 g (3.35 oz)
Build
Galaxy S25
Glass front (Gorilla Glass Victus 2), glass back (Gorilla Glass Victus 2), aluminum frame
Z650i
-
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
Z650i
Mini-SIM
Other
Galaxy S25
IP68 dust tight and water resistant (immersible up to 1.5m for 30 min) Armor aluminum 2 frame
Z650i
-
Type
Galaxy S25
Dynamic LTPO AMOLED 2X, 120Hz, HDR10+, 2600 nits (peak)
Z650i
TFT, 256K colors
Size
Galaxy S25
6.2 inches, 94.4 cm2 (~91.1% screen-to-body ratio)
Z650i
2.2 inches, 15.0 cm2 (~29.1% screen-to-body ratio)
Resolution
Galaxy S25
1080 x 2340 pixels, 19.5:9 ratio (~416 ppi density)
Z650i
240 x 320 pixels, 4:3 ratio (~182 ppi density)
Protection
Galaxy S25
Corning Gorilla Glass Victus 2, Mohs level 5
Z650i
-
OS
Galaxy S25
Android 15, up to 7 major Android upgrades, One UI 8
Z650i
-
Chipset
Galaxy S25
Qualcomm SM8750-AC Snapdragon 8 Elite (3 nm)
Z650i
-
CPU
Galaxy S25
Octa-core (2x4.47 GHz Oryon V2 Phoenix L + 6x3.53 GHz Oryon V2 Phoenix M)
Z650i
-
GPU
Galaxy S25
Adreno 830 (1200 MHz)
Z650i
-
Card slot
Galaxy S25
No
Z650i
microSD (dedicated slot)
Internal
Galaxy S25
128GB 12GB RAM, 256GB 12GB RAM, 512GB 12GB RAM
Z650i
10MB
Other
Galaxy S25
UFS 4.0
Z650i
-
Phonebook
Galaxy S25
-
Z650i
1000 entries
Call records
Galaxy S25
-
Z650i
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
Z650i
-
Features
Galaxy S25
Best Face, LED flash, auto-HDR, panorama
Z650i
-
Video
Galaxy S25
8K@24/30fps, 4K@30/60fps, 1080p@30/60/120/240fps, 10-bit HDR, HDR10+, stereo sound rec., gyro-EIS
Z650i
320p
Single
Galaxy S25
-
Z650i
2 MP
Single
Galaxy S25
12 MP, f/2.2, 26mm (wide), 1/3.2", 1.12µm, dual pixel PDAF
Z650i
Yes
Features
Galaxy S25
HDR, HDR10+
Z650i
-
Video
Galaxy S25
4K@30/60fps, 1080p@30fps
Z650i
Loudspeaker
Galaxy S25
Yes, with stereo speakers
Z650i
Yes
3.5mm jack
Galaxy S25
No
Z650i
No
Other
Galaxy S25
High-bitrate audio support
Z650i
-
Alert types
Galaxy S25
-
Z650i
Vibration; Downloadable polyphonic, MP3 ringtones
WLAN
Galaxy S25
Wi-Fi 802.11 a/b/g/n/ac/6e/7, tri-band, Wi-Fi Direct
Z650i
No
Bluetooth
Galaxy S25
5.4, A2DP, LE
Z650i
2.0, A2DP
Positioning
Galaxy S25
GPS, GLONASS, BDS, GALILEO, QZSS
Z650i
No
NFC
Galaxy S25
Yes
Z650i
-
Radio
Galaxy S25
No
Z650i
No
USB
Galaxy S25
USB Type-C 3.2, DisplayPort 1.2, OTG
Z650i
Proprietary
Sensors
Galaxy S25
Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer
Z650i
Other
Galaxy S25
Samsung DeX, Samsung Wireless DeX (desktop experience support)
Z650i
MP3/AAC/AAC+/e-AAC+ player Predictive text input Document viewer (Word, Excel, PowerPoint, PDF) Organizer
Messaging
Galaxy S25
-
Z650i
SMS, EMS, MMS, Email
Browser
Galaxy S25
-
Z650i
iMode
Games
Galaxy S25
-
Z650i
Yes + downloadable
Java
Galaxy S25
-
Z650i
Yes, DoJa 2.5
Type
Galaxy S25
Li-Ion 4000 mAh
Z650i
Removable Li-Ion 900 mAh battery
Charging
Galaxy S25
25W wired, PD3.0, 50% in 30 min 15W wireless (Qi2 Ready) 4.5W reverse wireless
Z650i
-
Stand-by
Galaxy S25
-
Z650i
Up to 200 h
Talk time
Galaxy S25
-
Z650i
Up to 4 h
Colors
Galaxy S25
Icy Blue, Mint, Navy, Silver Shadow, Pink Gold, Coral Red, Blue Black
Z650i
Black
Models
Galaxy S25
SM-S931B, SM-S931B/DS, SM-S931U, SM-S931U1, SM-S931W, SM-S931N, SM-S9310, SM-S931E, SM-S931E/DS
Z650i
-
SAR
Galaxy S25
1.13 W/kg (head) 0.92 W/kg (body)
Z650i
0.44 W/kg (head) 0.35 W/kg (body)
SAR EU
Galaxy S25
1.29 W/kg (head) 1.36 W/kg (body)
Z650i
0.39 W/kg (head)
Price
Galaxy S25
$ 799.99 / C$ 679.99 / £ 429.99 / € 589.90 / ₹ 74,999
Z650i
-