Screen size
RS46.6"
S25 UltraWinner: 6.8"+3.2%
Quick verdict
S25 Ultra leads the measured specs 9-3.
Measured wins
RS4
3
spec wins
Ties
9
equal specs
S25 Ultra
9
spec wins
Overall winner
Screen size
Technology
RS4
GSM / HSPA / LTE
S25 Ultra
GSM / HSPA / LTE
2G bands
RS4
GSM 850 / 900 / 1800 / 1900
S25 Ultra
GSM 850 / 900 / 1800 / 1900
3G bands
RS4
HSDPA 850 / 900 / 2100
S25 Ultra
HSDPA 850 / 900 / 2100
4G bands
RS4
LTE
Resolution
Refresh rate
equal specsPeak brightness
Pixel density
CPU speed
equal specsRAM
equal specsStorage
equal specsMain camera
equal specsFront camera
Battery
equal specsWired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
5G support
equal specsNFC
equal specs3.5mm jack
SD card
equal specsStereo speakers
S25 Ultra
LTE
Speed
RS4
HSPA, LTE
S25 Ultra
HSPA, LTE
Announced
RS4
2024, April 06
S25 Ultra
2024, November 09
Status
RS4
Available. Released 2024, April
S25 Ultra
Available. Released 2024, November
Dimensions
RS4
8.2 mm thickness
S25 Ultra
6.9 mm thickness
Weight
RS4
198 g (6.98 oz)
S25 Ultra
163 g (5.75 oz)
SIM
RS4
Nano-SIM + Nano-SIM
S25 Ultra
Nano-SIM + Nano-SIM
Other
RS4
-
S25 Ultra
IP64 dust tight and water resistant (water splashes) RGB ring notifications light (on the back)
Type
RS4
IPS LCD, 120Hz
S25 Ultra
AMOLED, 1B colors, 120Hz, 2160Hz PWM, 1000 nits (HBM), 1400 nits (peak)
Size
RS4
6.56 inches, 103.4 cm2
S25 Ultra
6.78 inches, 109.9 cm2
Resolution
RS4
720 x 1612 pixels, 20:9 ratio (~269 ppi density)
S25 Ultra
1080 x 2436 pixels (~393 ppi density)
Protection
RS4
-
S25 Ultra
Corning Gorilla Glass 7i
OS
RS4
Android 13
S25 Ultra
Android 14, up to 2 major Android upgrades, itel OS 14.5
Chipset
RS4
Mediatek Helio G99 Ultimate
S25 Ultra
Unisoc T620 (12 nm)
CPU
RS4
Octa-core (2x2.2 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
S25 Ultra
Octa-core (2x2.2 GHz Cortex-A75 & 6xX.X GHz Cortex-A55)
GPU
RS4
Mali-G57 MC2
S25 Ultra
-
Card slot
RS4
Unspecified
S25 Ultra
Unspecified
Internal
RS4
128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM
S25 Ultra
128GB 8GB RAM, 256GB 8GB RAM, 512GB 8GB RAM
Other
RS4
-
S25 Ultra
UFS 2.2
Single
RS4
50 MP, f/1.6, (wide), AF
S25 Ultra
-
Features
RS4
LED flash
S25 Ultra
LED flash, HDR, panorama
Video
RS4
1080p@30fps
S25 Ultra
1440p@30fps, 1080p@30fps
Dual
RS4
-
S25 Ultra
50 MP, f/1.6, (wide), AF XX MP (macro) Auxiliary lens
Single
RS4
8 MP
S25 Ultra
32 MP, f/2.2, 22mm (wide)
Video
RS4
Yes
S25 Ultra
1440p@30fps, 1080p@30fps
Loudspeaker
RS4
Yes, with stereo speakers
S25 Ultra
Yes
3.5mm jack
RS4
Yes
S25 Ultra
No
WLAN
RS4
Yes
S25 Ultra
Yes
Bluetooth
RS4
Yes
S25 Ultra
Yes
Positioning
RS4
GPS
S25 Ultra
GPS
NFC
RS4
Yes
S25 Ultra
Yes (market/region dependent)
Radio
RS4
Unspecified
S25 Ultra
Unspecified
USB
RS4
USB Type-C
S25 Ultra
USB Type-C 2.0
Infrared port
RS4
-
S25 Ultra
Yes
Sensors
RS4
Fingerprint (side-mounted), accelerometer, gyro
S25 Ultra
Fingerprint (under display, optical), unspecified sensors
Type
RS4
5000 mAh
S25 Ultra
5000 mAh
Charging
RS4
45W wired, bypass charging, 80% in 30 min
S25 Ultra
18W wired, bypass charging
Colors
RS4
Silvery White, Elegant Beige, Lurex Black
S25 Ultra
Bromo Black, Meteor Titanium, Komodo Ocean
Price
RS4
About 100 EUR
S25 Ultra
$ 195.00
Models
RS4
-
S25 Ultra
S686LN