OnePlus 15 vs Xiaomi 15 Ultra – Price, Specs & Features

Q: Which phone has better performance, the OnePlus 15 or the Xiaomi 15 Ultra?

In this performance comparison, the OnePlus 15 with its Snapdragon 8 Elite Gen 5 (3nm) performs better than the Xiaomi 15 Ultra with the Snapdragon 8 Elite (3nm), thanks to superior chipset efficiency.

OnePlus 15 alternatives

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Samsung Galaxy S25

Apple iPhone Air

Google Pixel 10 Pro XL

Vivo X200 Pro

Google Pixel 9

Xiaomi 15 Ultra alternatives

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OnePlus 15

Snapdragon 8 Elite Gen 5
3 nm
7300 mAh
120W
6.78"
1440 x 3168 pixels
50 MP
8K@30fps
Specs

Xiaomi 15 Ultra

Snapdragon 8 Elite
3 nm
5410 mAh
90W
6.73"
1440 x 3200 pixels
50 MP
8K@30fps
Specs

OnePlus 15

Xiaomi 15 Ultra

One or both mobiles are unofficial — Preliminary specifications. Subject to change.

General

Launch Date

Expected Novermber 13, 2025

March 11, 2025

Availability

Coming Soon

Available Now

Android 16

Android 15

Custom UI

OxygenOS 16

HyperOS 2

OS Updates

4 Years

Security Updates

6 Years

AI Features

OnePlus AI and more

HyperAI, AI Write, AI Summary and more

Body

Dimensions

161.3 x 75.3 x 9.4 mm

Thickness

9.4 mm

Weight

215 g

226 g

Build Details

Glass-fiber Back Or Vegan Leather, Aluminum Frame

IP Rating

IP69 (dust tight and water resistant (high pressure water jets; immersible up to 1.5m for 30 min), also IP68 rated)

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

Display

Size

6.78 inches

6.73 inches

Type

LTPO AMOLED, 1B colors, PWM, Dolby Vision, HDR10+, HDR Vivid, Ultra HDR image support

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

Refresh Rate

165 Hz

120 Hz

Peak Brightness

1800 nits

3200 nits

Resolution

1440 x 3168 pixels

1440 x 3200 pixels

Pixel Density

513 ppi

522 ppi

Aspect Ratio

20:9

Screen to Body Ratio

89.7 %

Protection

Ceramic Guard glass

Performance

Chipset¹

Qualcomm Snapdragon 8 Elite Gen 5

Qualcomm Snapdragon 8 Elite

Process Size

3 nm

CPU

Octa-core
2x4.6 GHz Oryon V3 Phoenix L
6x3.62 GHz Oryon V3 Phoenix M

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

GPU

Adreno 840

Adreno 830

RAM & Storage

12GB 256GB (UFS 4.1)
16GB 512GB (UFS 4.1)
16GB 1024GB (UFS 4.1)

RAM Type

LPDDR5X

Expandable Memory

Camera

Main Camera

50 MP
f/1.8, 24mm (wide), 1/1.56", 1.0µm, multi-directional PDAF, OIS

50 MP
f/2.8, 85mm (periscope telephoto), 1/2.76", 0.64µm, 3.5x optical zoom, PDAF, OIS

50 MP
f/2.0, 15mm, 120˚ (ultrawide), 1/2.76", 0.64µm, PDAF

50 MP
f/1.6, 23mm (wide), 1.0"-type, 1.6µm, Sony LYT-900, dual pixel PDAF, OIS

50 MP
f/1.8, 70mm (telephoto), 1/2.51", 0.7µm, Sony IMX858, dual pixel PDAF (10cm - ∞), OIS, 3x optical zoom

200 MP
f/2.6, 100mm (periscope telephoto), 1/1.4", 0.56µm, Samsung S5KHP9, multi-directional PDAF, OIS, 4.3x optical zoom

50 MP
f/2.2, 14mm, 115˚ (ultrawide), 1/2.76", 0.64µm, Samsung S5KJN5, dual pixel PDAF
TOF 3D, (depth)

OIS

Yes

Features

Laser focus, Hasselblad Color Calibration, color spectrum sensor, Dual-LED flash, HDR, panorama

Laser AF, color spectrum sensor, Leica lenses, Dual-LED flash, HDR, panorama, 67mm filter ring holder (optional)

Video Recording

8K@30fps
4K@30/60fps
1080p@30/60/240/480fps, Auto HDR, gyro-EIS, Dolby Vision

8K@30fps
4K@30/60/120fps
1080p@30/60/120/240/480/960/1920fps

Video Recording Features

gyro-EIS, Dolby Vision HDR 10-bit recording (4K@60fps, 1080p)

Selfie Camera

32 MP
f/2.4, 21mm (wide), 1/2.74", 0.8µm

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

Selfie Features

HDR, panorama

Selfie Video Recording

4K@30/60fps
1080p@30/60fps, gyro-EIS

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

Connectivity

SIM

Dual SIM (Nano + Nano)

Dual SIM
SIM1: Nano, SIM2: Nano

5G Support

Yes

Yes

21 5G bands
n1, n2, n3, n5, n7, n8, n12, n20, n25, n26, n28, n38, n40, n41, n48, n66, n71, n75, n77, n78, n79

VoLTE

Yes

Wi-Fi

Wi-Fi 7

Wi-Fi Details

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

Wi-Fi Features

Mobile Hotspot

USB

USB Type-C 3.2, OTG

USB Type-C 3.2 Gen 2, DisplayPort, OTG

Bluetooth

5.4

6.0

NFC

Yes

GPS

Yes with A-GPS

Yes with A-GPS, Glonass

Infrared

UWB (Ultra Wideband)

Battery

Capacity

7300 mAh

5410 mAh

Type

Si/C Li-Ion

Removable

Wired charging

120W

90W

Reverse Wired Charging

Wireless Charging

50W

80W

Reverse Wireless Charging

10W

Charger in the Box

Yes

Sound

Stereo Speakers

Yes

3.5mm Headphone Jack

FM Radio

Extra Features

Sensors

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

Others

Two-way satellite communication

Colors and Pricing

Colors

Sand Storm, Black, Purple

Chrome Silver

Price in India

₹109999

FAQs

Which phone has better performance?

In this performance comparison, the OnePlus 15 with its Qualcomm Snapdragon 8 Elite Gen 5 (3nm) performs better than the Xiaomi 15 Ultra with the Qualcomm Snapdragon 8 Elite (3nm), thanks to superior chipset efficiency.

Which phone offers longer software support?

Both OnePlus 15 and Xiaomi 15 Ultra offer the same software support — 4 years of OS updates and 6 years of security updates.

Which phone has a better display?

Both OnePlus 15 and Xiaomi 15 Ultra feature AMOLED displays, offering vibrant colors and deeper blacks. In terms of smoothness, OnePlus 15 offers a higher 165 Hz refresh rate, ensuring fluid scrolling and animations. Xiaomi 15 Ultra also boasts a brighter screen with 3200 nits of peak brightness, enhancing outdoor visibility. Both phones have the same screen resolution.

Which phone has a bigger battery and faster charging?

OnePlus 15 comes with a larger 7300 mAh battery, which may offer longer usage on a single charge. OnePlus 15 also supports faster wired charging at 120W, compared to 90W on Xiaomi 15 Ultra. Xiaomi 15 Ultra supports faster wireless charging at 80W, compared to 50W on OnePlus 15.

Which phone has better water and dust resistance?

OnePlus 15 offers better protection against water and dust with an IP69 rating.

Can I buy these phones on Amazon?

Xiaomi 15 Ultra – Check price here

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