Xiaomi 15 vs Samsung Galaxy Watch Ultra (2025) Specs Comparison

Compare mobile phone specifications of up to three devices at once. Our specs comparison tool helps you find and compare the perfect phone for your needs.

7.3
Xiaomi 15	Samsung Galaxy Watch Ultra (2025)
Released · Oct 29, 2024	Not announced · Expected Jul 09, 2025
6.4-inch · 2670x1200px	1.5-inch · 480x480px
Triple camera
12GB · 256GB	2GB · 32GB
5240 mAh	590 mAh
Check prices

Design

Dimensions
6.00 x 2.80 x 0.32 inches 152.3 x 71.2 x 8.08 mm
Weight
6.67 oz (189.0 g)	2.13 oz (60.5 g)
Materials
Back: Glass	Back: Glass (Sapphire), Ceramic Frame: Titanium
Resistance
Yes; IP68	Water (up to 10 meters), Dust; IP68; MIL-STD-810 certified
Biometrics
Ultrasonic in-screen fingerprint
Keys
Right: Volume control, Lock/Unlock key
Colors
	Titanium Silver, Titanium Gray, Titanium White

Display

Size
6.4-inch	1.5-inch
Resolution
2670x1200px, 20:9 ratio, 460 PPI	480x480px, 453 PPI
Technology
OLED	Super AMOLED
Refresh rate
120Hz
Screen-to-body
90.03 %
Peak brightness
3200 cd/m2 (nit)
Features
HDR support, Dolby Vision	Scratch-resistant glass (Sapphire), Ambient light sensor

Hardware

System chip
Snapdragon 8 Elite SM8750-AB (3 nm)	Exynos W1000 (3 nm)
Processor
Octa-core 2x4.32GHz Prime cores 6x3.53GHz Performance core
GPU
Adreno 830	Mali-G68
RAM
12GB	2GB
Internal storage
256GB (UFS 4.0)	32GB
Storage expansion
not expandable
OS
Android (14)	Wear OS

Battery

Capacity
5240 mAh	590 mAh
Charging
Fast charging, Qi wireless charging, Reverse wireless charging	Qi wireless charging
Charge speed
Wired: 90.0W Wireless: 50.0W	Wireless: 10.0W

Battery Life Estimate

7h 18min

Browsing

17h 6min

Video

9h 49min

Gaming

11h 38min

Battery Life Estimate

Untested

Browsing

Untested

Video

Untested

Gaming

Untested

Camera

Rear
Triple camera
Main camera
50 MP (OIS, Laser and PDAF) Aperture size: F1.6 Focal length: 23 mm
Second camera
50 MP (Telephoto, Periscope, OIS) Optical zoom: Yes Aperture size: F2.2
Third camera
50 MP (Telephoto, Periscope, OIS) Optical zoom: Yes Aperture size: F2.0 Focal Length: 60 mm
Flash
Dual LED
Video recording
7680x4320 (8K UHD) (30 fps), 3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (960 fps)
Front
32 MP, Video capture: 3840x2160 (4K UHD) (60 fps)

146

Overall

153

Photo

138

Video

N/A

Overall

N/A

Photo

N/A

Video

Connectivity & Features

Bluetooth
5.4	5.3
WLAN
802.11 a,b,g,n,ac,ax(Wi-Fi 6),Wi-Fi 6E,Wi-Fi 7 Wi-Fi Direct, Hotspot	802.11 a,b,g,n,ac
USB
Type-C, USB 3.2
Location
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning	GPS, A-GPS, Glonass, Galileo, BeiDou
Sensors
Accelerometer, Gyroscope, Compass, Barometer	Accelerometer, Gyroscope, Pedometer, Compass, Heart rate, Thermometer, Barometer, Step detector, ECG, Blood Oxygen
Other
NFC, Infrared	NFC

Multimedia

Headphones
No 3.5mm jack
Speakers
Earpiece, Multiple speakers	Loudspeaker
Screen mirroring
Wireless screen share
Additional microphone(s)
Noise cancellation

Cellular

5G
Bands n1, n3, n5, n7, n8, n28, n38, n40, n41, n48, n66, n77, n78, n79, SA, NSA
4G (FDD)
Bands 1(2100), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 18(800 Lower), 19(800 Upper), 26(850+), 28(700 APT), 66(AWS-3)
4G (TDD)
Bands 34(2000), 38(2600), 39(1900+), 40(2300), 41(2600+), 42(3500), 48(3600)
3G
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 6(800), 8(900)	Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)
Data Speed
	LTE
SIM type
Dual Nano SIM + eSIM	eSIM

Buyers information

MSRP
€ 999

Availability

Expected Announcement
	Jul 09, 2025

Alternative variants

With 512GB internal storage


Internal storage	512GB

With 16GB RAM and 512GB internal storage


RAM	16GB
Internal storage	512GB

With 16GB RAM and 1TB internal storage


RAM	16GB
Internal storage	1024GB

Links

Full specifications
Xiaomi 15 Specs	Samsung Galaxy Watch Ultra (2025) Specs
PhoneArena Review
Xiaomi 15 Review