Xiaomi 15 Ultra vs Samsung Galaxy S23 Ultra

95 out 100

VS

81 out 100

Compared 2 smartphones : Xiaomi 15 Ultra Manufactured in February, 2025, with display 6.73 with chipsetQualcomm Snapdragon 8 Elite, vs Samsung Galaxy S23 Ultra, Manufactured in February, 2023with chipsetSnapdragon 8 Gen 2 Mobile Platform for Galaxy. Below are specs, tests, pros and cons for each device

Key Differences

Device key advantages

Reasons to choose Xiaomi 15 Ultra

Higher pixel density: 522ppi
Lighter design: 226g vs 233g
Higher battery capacity: 5410mAh vs 5000mAh
Newer Bluetooth version: 6.0 vs 5.3
Infrared port
Includes charger

Reasons to choose Samsung Galaxy S23 Ultra

Larger display: 6.8in

Versions

Available versions and configurations

Memory Options

- 12/256 GB
- 16/512 GB
- 16/1024 GB

- 8/256 GB
- 12/256 GB
- 12/512 GB
- 12/1024 GB

Review

Key Specs Xiaomi 15 Ultra and Samsung Galaxy S23 Ultra

Display

Color accuracy, sharpness & brightness

Xiaomi 15 Ultra

97

Samsung Galaxy S23 Ultra

89

Camera

Main & front camera tests

Xiaomi 15 Ultra

95

Samsung Galaxy S23 Ultra

85

Performance

App & system performance

Xiaomi 15 Ultra

96

Samsung Galaxy S23 Ultra

75

Games

3D gaming performance

Xiaomi 15 Ultra

96

Samsung Galaxy S23 Ultra

74

Battery

Battery life, charging speed & type

Xiaomi 15 Ultra

97

Samsung Galaxy S23 Ultra

85

Connectivity

Connectivity features

Xiaomi 15 Ultra

98

Samsung Galaxy S23 Ultra

83

NanoReview Score

Overall score by NanoReview

Xiaomi 15 Ultra

95

Samsung Galaxy S23 Ultra

81

Adjust each parameter’s importance to find the best match for you.

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Function

Importance (Weight)

Display:

Camera:

Performance:

Gaming:

Battery:

Connectivity:

Higher weight means greater impact on NanoReview score.

Display

Display quality comparison

Type	AMOLED	Dynamic AMOLED
Size	6.73 in	6.8 in
Resolution	1440x3200 pixels	1440x3088 pixels
Aspect ratio	20:9	19.3:9
Pixel density	522 ppi	500 ppi
Refresh rate	120 Hz	120 Hz
Adaptive refresh rate	Yes (1-120 Hz)	Yes (1-120 Hz)
Max brightness	n/a	850 nits
HDR support	Yes Dolby Vision	Yes HDR10+
Touch Sampling Rate	300 Hz	240 Hz
Screen-to-body ratio	90 %	89.5 %
Features	- DCI-P3 - Always-On Display - DC dimming	- DCI-P3 - Always-On Display

Peak brightness (auto)

Xiaomi 15 Ultra

1599 nits

Samsung Galaxy S23 Ultra

1269 nits

sRGB gamut	99.7 %	96.9 %
PWM (Flicker)	120 Hz	240 Hz
Response time	1 ms	2 ms
Contrast	∞ Infinite	∞ Infinite

Sources: NotebookCheck [Xiaomi 15 Ultra], [Samsung Galaxy S23 Ultra]

Design & Build

Design and ergonomics comparison

Height	161.3 mm (6.35 in)	163.4 mm (6.43 in)
Width	75.3 mm (2.96 in)	78.1 mm (3.07 in)
Thickness	9.35 mm (0.37 in)	8.9 mm (0.35 in)
Weight	226 g (7.97 oz)	233 g (8.22 oz)
Water resistance	IP68	IP68
Cooling system	Vapor chamber	Vapor chamber
Back panel	Glass	Glass
Frame	Metal	Metal
Colors	- White - Black - Silver - Green	- White - Black - Gray - Blue - Green - Red - Purple
Fingerprint sensor	Yes In-Display	Yes In-Display

Screen-to-body ratio

Xiaomi 15 Ultra

90 %

Samsung Galaxy S23 Ultra

89.5 %

Performance

Testing Xiaomi 15 Ultra and Samsung Galaxy S23 Ultra In benchmarks

Chipset	Qualcomm Snapdragon 8 Elite	Snapdragon 8 Gen 2 Mobile Platform for Galaxy
Max Frequency	4320 MHz	3360 MHz
CPU Cores	8 (2 + 6)	8 (1 + 2 + 2 + 3)
Architecture	- 6/3.53 (Oryon (Phoenix M)) - 2/4.32 (Oryon (Phoenix L))	- 3/2 (Cortex-A510) - 2/2.8 (Cortex-A710) - 2/2.8 (Cortex-A715) - 1/3.2 (Cortex-X3)
Process	TSMC	TSMC
Transistor Size	3 nm	4 nm
Neural Processor	Hexagon	Hexagon
Graphics	Adreno 830	Adreno 740
GPU Cores	1536	1536
GPU Frequency	1100 MHz	719 MHz
FLOPS	3379.2 GFLOPS	2089 GFLOPS

Geekbench 6 (Single-Core)

Xiaomi 15 Ultra

3008

Samsung Galaxy S23 Ultra

1976

Geekbench 6 (Multi-Core)

Xiaomi 15 Ultra

9065

Samsung Galaxy S23 Ultra

5221

Geekbench 6 (Single-Core)	3008	1976
Geekbench 6 (Multi-Core)	9065	5221

Sources: Geekbench v6 [Xiaomi 15 Ultra]

AnTuTu 10

Xiaomi 15 Ultra

2544373

Samsung Galaxy S23 Ultra

1541246

CPU	558586	371084
GPU	1040161	600732
Memory	520300	299004
UX	425326	270462
NanoReview Score	2544373	1541246

3DMark Wild Life

Xiaomi 15 Ultra

n/a

Samsung Galaxy S23 Ultra

12160

Max Surface Temp.	n/a	34.8 °C
Stability	n/a	64 %
Graphics Test	n/a	72 fps
Graphics Score	n/a	12160

Sources: 3DMark [Samsung Galaxy S23 Ultra]

PCMark 3.0

Xiaomi 15 Ultra

n/a

Samsung Galaxy S23 Ultra

16130

Writing score	n/a	19799
Web score	n/a	16101
Video editing	n/a	7815
Data manipulation	n/a	13142
NanoReview Score	n/a	16130

Memory

RAM Size	12 GB	- 8 GB - 12 GB
Memory Type	LPDDR5X	LPDDR5X
Memory Frequency	5333 MHz	4200 MHz
Channels	2	4

Storage Capacity	256 GB	- 256 GB - 512 GB - 1024 GB
Storage Type	UFS 4.1	UFS 4.0
Memory Card	No	No

Software

OS	Android 15	Android 13 (Upgradeable to Android 14)
OS Size	23.9 GB	39.9 GB
UI Skin	HyperOS 2.0	One UI 6.1

Battery

Volume	5410 mAh	5000 mAh
Max Charging Power	90 W	45 W
Battery Type	Silicon Carbon (Si/C)	Li-ion
Removable	No	No
Wireless Charging	Yes (80 W)	Yes (15 W)
Reverse Charging	Yes (Wireless)	Yes (Wireless)
Fast Charging	Yes (72% in 30 min)	Yes (68% in 30 min)
Full Charge Time	0:51 h	0:59 h

Battery Life

Xiaomi 15 Ultra

30:03

Samsung Galaxy S23 Ultra

26:01

Web Browsing	12:19 h	09:57 h
Video Playback	18:43 h	15:38 h
Games	06:45 h	06:22 h
Standby Mode	141 h	130 h

Main camera

Matrix	50 MP	200 MP
Photo resolution	8192x6144 pixels	16320x12240 pixels
Zoom	Optical, 4.3x	Optical, 10x
Flash	Dual LED	LED
Stabilization	Optical	Optical
8K Recording	Yes (Up to 30 fps)	Yes (Up to 30 fps)
4K Recording	Yes (Up to 120 fps)	Yes (Up to 60 fps)
1080p Recording	Yes (Up to 60 fps)	Yes (Up to 120 fps)
Slow Motion	1920 fps (1080p)	960 fps (1080p)
Wide-angle lens	115 °	120 °
Lenses count	Standard: 50 MP Telephoto: 200 MP Telephoto: 50 MP Ultra-wide: 50 MP Depth	Standard: 200 MP Telephoto: 10 MP Telephoto: 10 MP Ultra-wide: 12 MP
Features	- Bokeh effect - Pro mode - RAW support	- Bokeh effect - Pro mode - RAW support

Matrix	50 MP	200 MP
Aperture	f/1.63	f/1.7
Focal length	23 mm	23 mm
Sensor	Sony LYT-900	Samsung ISOCELL HP2
Sensor size	1/1.0	1/1.3
Pixel size	1.6 μm	0.64 μm
Autofocus	Laser autofocus	Laser autofocus
Stabilization	Optical	Optical

Matrix	200 MP	10 MP
Aperture	f/2.6	f/4.9
Focal length	100 mm	230 mm
Sensor	Samsung ISOCELL S5KHP9	Sony IMX754
Sensor size	1/1.4	1/3.52
Pixel size	0.56 μm	1.12 μm
Stabilization	Optical	Optical

Matrix	50 MP	12 MP
Aperture	f/2.2	f/2.2
Focal length	14 mm	13 mm
Sensor	Samsung S5KJN5	Sony IMX564
Sensor size	1/2.76	1/2.55
Pixel size	0.64 μm	1.4 μm
Stabilization	Digital	Digital

Photo quality

Xiaomi 15 Ultra

158

Samsung Galaxy S23 Ultra

139

Video quality

Xiaomi 15 Ultra

134

Samsung Galaxy S23 Ultra

137

Overall camera score

Xiaomi 15 Ultra

153

Samsung Galaxy S23 Ultra

140

Bokeh	80	70
Preview	89	73
Zoom	n/a	141

Sources: DxOMark [Xiaomi 15 Ultra], [Samsung Galaxy S23 Ultra]

Front camera

Matrix	32 MP	12 MP
Photo resolution	6528x4896 pixels	4000x3000 pixels
Aperture	f/2.0	f/2.2
Focal length	22 mm	26 mm
Sensor	Omnivision OV32B	Samsung S5K3LU
Sensor size	1/3.14	1/3.24
Pixel size	0.7 μm	1.12 μm
Autofocus	No	Phase autofocus
Stabilization	Digital	Digital
Video resolution	2160p (4K) at 60 fps	2160p (4K) at 60 fps
TOF 3D sensor	No	No

Photo quality

Xiaomi 15 Ultra

n/a

Samsung Galaxy S23 Ultra

139

Video quality

Xiaomi 15 Ultra

n/a

Samsung Galaxy S23 Ultra

145

Connectivity

Wi-Fi version	Wi-Fi 7 (802.11 a/b/g/n/ac/ax/be)	Wi-Fi 6E (802.11 a/b/g/n/ac/ax)
Wi-Fi features	- Dual Band - Wi-Fi MiMO - Wi-Fi Direct - Wi-Fi Hotspot - Wi-Fi Display	- Dual Band - Wi-Fi MiMO - Wi-Fi Direct - Wi-Fi Hotspot - Wi-Fi Display
Bluetooth version	6.0	5.3
Bluetooth features	LE	LE
USB type	USB Type-C	USB Type-C
USB version	3.2	3.2
USB features	- Charging - USB Storage Mode - OTG	- Charging - USB Storage Mode - OTG
DisplayPort	Yes	Yes DP 1.2
GPS	- GPS - GLONASS - Beidou - Galileo - QZSS - NAVIC	- GPS - GLONASS - Beidou - Galileo - QZSS
NFC*	Yes	Yes
Infrared Port	Yes	No

SIM Count*	2	1
SIM Type	Nano	Nano
SIM Mode	Dual SIM Standby	Dual SIM Standby
eSIM Support *	Yes	Yes
Hybrid Slot	No	No
2G Bands	GSM 2/3/5/8	n/a
3G Bands	WCDMA 1/2/4/5/6/8/19	n/a
LTE Bands*	LTE (B1/B2/B3/B4/B5/B7/B8/B12/B17/B18/B19/B20/B26/B28/B34/B38/B39/B40/B41/B42/B48/B66)	n/a
LTE category	n/a	20
5G Support	Yes	Yes

Sound

Speakers	n/a	Stereo
3.5 mm Jack	No	No
FM Radio	No	No
Dolby Atmos	Yes	Yes

Max Volume

Xiaomi 15 Ultra

92.1 dB

Samsung Galaxy S23 Ultra

91.8 dB

Other

Class	Flagship	Flagship
Announced	February, 2025 yr	February, 2023 yr
Release Date	February, 2025 yr	February, 2023 yr
Launch Price ($)	n/a	1199
MSRP ($)	1099	n/a
Sensors	- Barometer - Proximity Sensor - Gyroscope - Accelerometer - Ambient Light Sensor - Compass - Fingerprint sensor	- Hall Sensor - Barometer - Proximity Sensor - Gyroscope - Accelerometer - Ambient Light Sensor - Compass - Fingerprint sensor
Charger Included	Yes 90 W	No

Note

Xiaomi 15 Ultra:

The Chinese version of the Xiaomi 15 Ultra has a 6000 mAh battery, while the international model comes with 5410 mAh, leading to a noticeable difference in battery life.

Results

After analyzing the data, we consider Xiaomi 15 Ultra the clear winner in this comparison.

Survey

Which smartphone would you pick?

Xiaomi 15 Ultra

0 (0%)

Samsung Galaxy S23 Ultra

0 (0%)

Total Votes: 0

Xiaomi 15 Ultra vs Samsung Galaxy S23 Ultra

Key Differences

Versions

Review

Tests & specs

Display

Design & Build

Performance

Memory

Software

Battery

Main camera

Front camera

Connectivity

Sound

Other

Note

Results

Survey

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