Samsung Galaxy S23 Ultra vs Xiaomi 15 – Price, Specs & Features

Q: Which phone has better performance, the Samsung Galaxy S23 Ultra or the Xiaomi 15?

In this performance comparison, the Xiaomi 15 with its Snapdragon 8 Elite (3nm) performs better than the Samsung Galaxy S23 Ultra with the Snapdragon 8 Gen 2 (4nm), thanks to superior chipset efficiency.

Samsung Galaxy S23 Ultra alternatives

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OnePlus 13

Xiaomi 15 alternatives

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Oppo Find X8 Pro

Google Pixel 9 Pro XL

Samsung Galaxy S25 Ultra

Samsung Galaxy S23+

Apple iPhone 16 Pro Max

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Samsung Galaxy S23 Ultra

Snapdragon 8 Gen 2
4 nm
5000 mAh
45W
6.8"
1440 x 3088 pixels
200 MP
8K@24/30fps
Specs

Xiaomi 15

Snapdragon 8 Elite
3 nm
5240 mAh
90W
6.36"
1200 x 2670 pixels
50 MP
8K@24/30fps
Specs

Samsung Galaxy S23 Ultra

Xiaomi 15

General

Launch Date

February 01, 2023

March 11, 2025

Availability

Available Now

Android 13

Android 15

Custom UI

One UI 5.1

HyperOS 2

OS Updates

4 Years

Security Updates

5 Years

6 Years

AI Features

Circle to Search, Live Translate, Note Assist, Photo Assist, Chat Assist

HyperAI, Circle to Search, AI Write, AI translate, AI Erase Pro, AI Summary and more

Body

Dimensions

163.4 x 78.1 x 8.9 mm

152.3 x 71.2 x 8.1 mm

Thickness

8.9 mm

8.1 mm

Weight

234 g

189 g

Back Material

Gorilla Glass Victus 2

Build Details

Aluminum Frame

Aluminum Alloy Frame

IP Rating

IP68 (up to 1.5m for 30 min)

IP68 (dust tight and water resistant (immersible up to 1.5m for 30 min))

Display

Size

6.8 inches

6.36 inches

Type

Dynamic AMOLED 2X, HDR10, Always-on display

LTPO AMOLED, 68B colors, Dolby Vision, HDR10+

Refresh Rate

120 Hz

Peak Brightness

1750 nits

3200 nits

Resolution

1440 x 3088 pixels

1200 x 2670 pixels

Pixel Density

500 ppi

460 ppi

Aspect Ratio

19.3:9

20:9

Screen to Body Ratio

89.9 %

90.0 %

Protection

Gorilla Glass Victus 2

Performance

Chipset¹

Qualcomm Snapdragon 8 Gen 2

Qualcomm Snapdragon 8 Elite

Process Size

4 nm

3 nm

CPU

Octa-core
1x3.36 GHz Cortex-X3
2x2.8 GHz Cortex-A715
2x2.8 GHz Cortex-A710
3x2.0 GHz Cortex-A510

Octa-core
2x4.32 GHz Oryon V2 Phoenix L
6x3.53 GHz Oryon V2 Phoenix M

GPU

Adreno 740

Adreno 830

RAM & Storage

8GB 256GB (UFS 4.0)
12GB 256GB (UFS 4.0)
12GB 512GB (UFS 4.0)
12GB 1024GB (UFS 4.0)

12GB 512GB (UFS 4.0)

RAM Type

LPDDR5X

Expandable Memory

Camera

Main Camera

200 MP
f/1.7, 24mm (wide), 1/1.3", 0.6µm, multi-directional PDAF, Laser AF, OIS

10 MP
f/2.4, 70mm (telephoto), 1/3.52", 1.12µm, PDAF, OIS, 3x optical zoom

10 MP
f/4.9, 230mm (periscope telephoto), 1/3.52", 1.12µm, PDAF, OIS, 10x optical zoom

12 MP
f/2.2, 13mm, 120˚ (ultrawide), 1/2.55", 1.4µm, dual pixel PDAF, Super Steady video

50 MP
f/1.6, 23mm (wide), 1/1.31", 1.2µm, OmniVision Light Fusion 900, dual pixel PDAF, OIS

50 MP
f/2.0, 60mm (telephoto), 1/2.76", 0.64µm, S5KJN5, PDAF (10cm - ∞), OIS, 2.6x optical zoom

50 MP
f/2.2, 14mm, 115˚ (ultrawide), 1/2.76", 0.64µm, Samsung S5KJN1

OIS

Yes

Features

LED flash, auto-HDR, panorama, Digital Zoom, Auto Flash, Face detection, Touch to focus

Laser AF, color spectrum sensor, Leica lens, Dual-LED dual-tone flash, HDR, panorama

Video Recording

8K@24/30fps
4K@30/60fps
1080p@30/60/240fps
1080p@960fps

8K@24/30fps
4K@24/30/60fps
1080p@30/60/120/240/960fps
720p@1920fps

Video Recording Features

Slo-motion, Ultra Steady Video, Video HDR, Bokeh portrait video, Video Pro Mode, Stereo recording, gyro-EIS

Selfie Camera

12 MP
f/2.2, 26mm (wide), dual pixel PDAF

32 MP
f/2.0, 21mm (wide), 1/3.14", 0.7µm, OmniVision OV32B40

Selfie Features

Dual video call, Auto-HDR, HDR10+

HDR, panorama

Selfie Video Recording

4K@30/60fps
1080p@30fps

4K@30/60fps
1080p@30/60fps

Connectivity

SIM

Dual SIM, GSM+GSM
SIM1: Nano, SIM2: Nano

Dual SIM
SIM1: Nano, SIM2: Nano

SIM 1

15 5G Bands

FDD: N1, N2, N3, N5, N7, N8, N12, N20, N25, N28
TDD: N38, N40, N41, N77, N78

19 5G Bands

FDD: N1, N2, N3, N5, N7, N8, N12, N20, N25, N26, N28
TDD: N38, N40, N41, N48, N66, N75, N77, N78

SIM 2

15 5G Bands

FDD: N1, N2, N3, N5, N7, N8, N12, N20, N25, N28
TDD: N38, N40, N41, N77, N78

19 5G Bands

FDD: N1, N2, N3, N5, N7, N8, N12, N20, N25, N26, N28
TDD: N38, N40, N41, N48, N66, N75, N77, N78

VoLTE

Yes

Wi-Fi

Wi-Fi 6E

Wi-Fi 7

Wi-Fi Details

802.11 a/b/g/n/ac/ax 5GHz, MIMO

802.11 a/b/g/n/ac/be/ax 5GHz 6GHz, MIMO

Wi-Fi Features

Wi-Fi Direct, Mobile Hotspot

USB

USB Type-C 3.2, OTG

USB Type-C 3.2 Gen2, Display Port, OTG

Bluetooth

5.3

5.4

NFC

Yes

GPS

Yes with A-GPS, Glonass

Infrared

Yes

UWB (Ultra Wideband)

Yes

Battery

Capacity

5000 mAh

5240 mAh

Type

Li-ion

Si/C Li-Ion

Removable

Wired charging

45W

90W

Charging Speed

65% in 30 min

Wireless Charging

15W

50W

Reverse Wireless Charging

4.5W

10W

Charger in the Box

Yes

Sound

Stereo Speakers

Yes

3.5mm Headphone Jack

FM Radio

Extra Features

Sensors

Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer

Under-display ultrasonic fingerprint sensor, accelerometer, gyroscope, proximity, compass, barometer

Others

Samsung DeX, Samsung Wireless DeX

Colors and Pricing

Colors

Phantom Black, Green, Cream, Lavender, Graphite, Sky Blue, Lime, Red, BMW M Edition

Black, White and Green

Price in India

₹79999

₹64998

FAQs

Which phone has better performance?

In this performance comparison, the Xiaomi 15 with its Qualcomm Snapdragon 8 Elite (3nm) performs better than the Samsung Galaxy S23 Ultra with the Qualcomm Snapdragon 8 Gen 2 (4nm), thanks to superior chipset efficiency.

Which phone offers longer software support?

Both phones offer the same 4 years of OS update support. For security updates, Xiaomi 15 offers 6 years of support compared to Samsung Galaxy S23 Ultra's 5 years.

Which phone has a better display?

Both Samsung Galaxy S23 Ultra and Xiaomi 15 feature AMOLED displays, offering vibrant colors and deeper blacks. Both smartphones offer the same 120 Hz refresh rate. Xiaomi 15 also boasts a brighter screen with 3200 nits of peak brightness, enhancing outdoor visibility. Notably, Samsung Galaxy S23 Ultra offers a higher screen resolution, resulting in sharper visuals and more detailed content.

Which phone has a bigger battery and faster charging?

Xiaomi 15 features a larger 5240 mAh battery, potentially delivering better battery life. Xiaomi 15 also supports faster wired charging at 90W, compared to 45W on Samsung Galaxy S23 Ultra. Xiaomi 15 supports faster wireless charging at 50W, compared to 15W on Samsung Galaxy S23 Ultra.

Which phone has better water and dust resistance?

Both phones feature the same IP68 rating for water and dust resistance.

Can I buy these phones on Amazon?

Samsung Galaxy S23 Ultra – Check price here
Xiaomi 15 – Check price here

¹ Scores can vary even with the same chipset due to RAM, thermals, and software optimization.