Realme P4 vs Xiaomi 15 Ultra – Price, Specs & Features

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Xiaomi 15 Ultra alternatives

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Vivo X200 Pro

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Realme P4

Dimensity 7400
4 nm
7000 mAh
80W
6.77"
1080 x 2392 pixels
50 MP
4K@30fps
Specs

Xiaomi 15 Ultra

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

Xiaomi 15 Ultra

General

Launch Date

August 20, 2025

March 11, 2025

Availability

Available Now

Android 15

Custom UI

Realme UI 6.0

HyperOS 2

OS Updates

3 Years

4 Years

Security Updates

4 Years

6 Years

AI Features

AI Recording Summary, AI Smart Loop 2.0, Circle to Search, AI Edit Genie, AI Eraser, AI TextScanner, AI Camera and more

HyperAI, AI Write, AI Summary and more

Body

Dimensions

163.3 x 75.9 x 7.6 mm

161.3 x 75.3 x 9.4 mm

Thickness

7.6 mm

9.4 mm

Weight

185 g

226 g

Build Details

Plastic Frame, Polycarbonate Back

Glass-fiber Back Or Vegan Leather, Aluminum Frame

IP Rating

IP66 (dust tight and water resistant (low and High pressure water jets), also IP65)

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

Display

Size

6.77 inches

6.73 inches

Type

OLED, 1B colors

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

Refresh Rate

144 Hz

120 Hz

Peak Brightness

4500 nits

3200 nits

Resolution

1080 x 2392 pixels

1440 x 3200 pixels

Pixel Density

388 ppi

522 ppi

Aspect Ratio

19.9:9

20:9

Screen to Body Ratio

89.5 %

89.7 %

Performance

Chipset¹

MediaTek Dimensity 7400

Qualcomm Snapdragon 8 Elite

Process Size

4 nm

3 nm

CPU

Octa-core
4x2.6 GHz Cortex-A78
4x2.0 GHz Cortex-A55

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

GPU

Mali-G615 MC2

Adreno 830

RAM & Storage

6GB 128GB (UFS 3.1)
8GB 128GB (UFS 3.1)
8GB 256GB (UFS 3.1)

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

RAM Type

LPDDR4X

LPDDR5X

Expandable Memory

Camera

Main Camera

50 MP
f/1.8, 27mm (wide), 1/2.88", 0.61µm, OmniVision OV50D40, PDAF

8 MP
f/2.2, 112˚ (ultrawide), 1/4.0", 1.12µm

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

LED flash, HDR, panorama

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

Video Recording

4K@30fps
1080p@30/60/120fps, gyro-EIS

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

16 MP
f/2.4, (wide), 1/3.09", 1µm, Sony IMX480

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

Selfie Features

Panorama

HDR, panorama

Selfie Video Recording

1080p@30fps

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

Connectivity

SIM

Dual SIM (Nano + Nano)

Dual SIM
SIM1: Nano, SIM2: Nano

5G Support

Yes

9 5G bands
n1, n3, n5, n8, n28, n40, n41, n77, n78

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 6

Wi-Fi 7

Wi-Fi Details

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

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

Wi-Fi Features

Mobile Hotspot

USB

USB Type-C 2.0, OTG

USB Type-C 3.2 Gen 2, DisplayPort, OTG

Bluetooth

5.4

6.0

NFC

Yes

GPS

Yes with A-GPS, Glonass

Infrared

UWB (Ultra Wideband)

Battery

Capacity

7000 mAh

5410 mAh

Type

Li-Ion

Si/C Li-Ion

Removable

Wired charging

80W

90W

Charging Speed

50% in 25 min

Reverse Wired Charging

10W

Wireless Charging

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 optical fingerprint sensor, accelerometer, gyroscope, proximity, compass

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

Others

Two-way satellite communication

Colors and Pricing

Colors

Steel Gray, Engine Blue, Forge Red

Chrome Silver

Price in India

₹18499

₹109999

FAQs

Which phone has better performance?

In this performance comparison, the Xiaomi 15 Ultra with its Qualcomm Snapdragon 8 Elite (3nm) performs better than the Realme P4 with the MediaTek Dimensity 7400 (4nm), thanks to superior chipset efficiency.

Which phone offers longer software support?

Xiaomi 15 Ultra offers 4 years of OS updates, whereas Realme P4 provides 3 years. For security updates, Xiaomi 15 Ultra offers 6 years of support compared to Realme P4's 4 years.

Which phone has a better display?

Both Realme P4 and Xiaomi 15 Ultra feature AMOLED displays, offering vibrant colors and deeper blacks. In terms of smoothness, Realme P4 offers a higher 144 Hz refresh rate, ensuring fluid scrolling and animations. Realme P4 also boasts a brighter screen with 4500 nits of peak brightness, enhancing outdoor visibility. Notably, Xiaomi 15 Ultra offers a higher screen resolution, resulting in sharper visuals and more detailed content.

Which phone has a bigger battery and faster charging?

Realme P4 comes with a larger 7000 mAh battery, which may offer longer usage on a single charge. Xiaomi 15 Ultra also supports faster wired charging at 90W, compared to 80W on Realme P4. Xiaomi 15 Ultra supports wireless charging at 80W, while Realme P4 lacks this feature.

Which phone has better water and dust resistance?

Xiaomi 15 Ultra offers better protection against water and dust with an IP68 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.