Realme C75 5G vs Xiaomi 15 Ultra – Price, Specs & Features

Q: Which phone has better performance, the Realme C75 5G or the Xiaomi 15 Ultra?

In this comparison, the Xiaomi 15 Ultra with the Snapdragon 8 Elite (3 nm) performs better than the Realme C75 5G with the Dimensity 6300 (6 nm), thanks to its more efficient chipset.

Realme C75 5G alternatives

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Xiaomi 15 Ultra alternatives

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Realme C75 5G

Dimensity 6300
6 nm
6000 mAh
45W
6.67"
720 x 1604 pixels
32 MP
1080p@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

May 02, 2025

March 11, 2025

Availability

Available Now

Android 15

Custom UI

Realme UI 6.0

HyperOS 2

OS Updates

2 Years

4 Years

Security Updates

3 Years

6 Years

AI Features

HyperAI, AI Write, AI Summary and more

Body

Dimensions

165.7 x 76.2 x 7.9 mm

161.3 x 75.3 x 9.4 mm

Thickness

7.9 mm

9.4 mm

Weight

190 g

226 g

Build Details

Glass-fiber Back Or Vegan Leather, Aluminum Frame

IP Rating

IP64 (Dust-tight and water-resistant (protected against splashes), drop-resistant up to 2 meters, MIL-STD-810H compliant.*)

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

Display

Size

6.67 inches

6.73 inches

Type

IPS LCD

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

Refresh Rate

120 Hz

Peak Brightness

625 nits

3200 nits

Resolution

720 x 1604 pixels

1440 x 3200 pixels

Pixel Density

264 ppi

522 ppi

Aspect Ratio

20:9

Screen to Body Ratio

84.9 %

89.7 %

Performance

Chipset

Mediatek Dimensity 6300

Qualcomm Snapdragon 8 Elite

Process Size

6 nm

3 nm

CPU

Octa-core
2x2.4 GHz Cortex-A76
6x2.0 GHz Cortex-A55

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

GPU

Mali-G57 MC2

Adreno 830

RAM & Storage

4GB 128GB
6GB 128GB

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

RAM Type

LPDDR5X

Expandable Memory

Yes

Camera

Main Camera

32 MP
f/1.8, 27mm (wide), 1/3.1", GalaxyCoreGC32E2, 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

LED flash, panorama

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

Video Recording

1080p@30fps

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

8 MP
f/2.0, (wide)

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
SIM1: Nano, SIM2: Nano (Hybrid)

Dual SIM
SIM1: Nano, SIM2: Nano

SIM 1

9 5G Bands

FDD: N1, N3, N5, N8, N28
TDD: N40, N41, N77, N78

21 5G Bands

FDD: N1, N2, N3, N5, N7, N8, N12, N20, N25, N26, N28
TDD: N38, N40, N41, N48, N66, N71, N75, N77, N78, N79

SIM 2

9 5G Bands

FDD: N1, N3, N5, N8, N28
TDD: N40, N41, N77, N78

21 5G Bands

FDD: N1, N2, N3, N5, N7, N8, N12, N20, N25, N26, N28
TDD: N38, N40, N41, N48, N66, N71, N75, N77, N78, N79

VoLTE

Yes

Wi-Fi

Wi-Fi 5

Wi-Fi 7

Wi-Fi Details

802.11 a/b/g/n/ac 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

5.3

6.0

NFC

Yes

GPS

Yes with A-GPS, Glonass

Infrared

UWB (Ultra Wideband)

Battery

Capacity

6000 mAh

5410 mAh

Type

Li-Po

Si/C Li-Ion

Removable

Wired charging

45W

90W

Wireless Charging

80W

Reverse Wireless Charging

10W

Charger in the Box

Yes

Sound

Stereo Speakers

Yes

3.5mm Headphone Jack

Yes

FM Radio

Extra Features

Sensors

Side-mounted fingerprint sensor, accelerometer, proximity, compass

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

Others

Two-way satellite communication

Colors and Pricing

Colors

Midnight Lily, Purple Blossom, Lily White

Chrome Silver

Price in India

₹12598

₹109998

FAQs

Which phone has better performance?

In this comparison, the Xiaomi 15 Ultra with the Qualcomm Snapdragon 8 Elite (3nm) performs better than the Realme C75 5G with the Mediatek Dimensity 6300 (6nm), thanks to its more efficient chipset.

Which phone offers longer software support?

The Xiaomi 15 Ultra offers 4 years of OS updates, while the Realme C75 5G provides 2 years. When it comes to security updates, Xiaomi 15 Ultra leads with 6 years of support.

Which phone has a better display?

Xiaomi 15 Ultra has a superior AMOLED display, while Realme C75 5G uses an LCD panel. They have the same 120 Hz refresh rate. Xiaomi 15 Ultra also has a brighter display with 3200 nits, improving outdoor visibility. Notably, Xiaomi 15 Ultra has a higher resolution display, resulting in sharper visuals.

Which phone has a bigger battery and faster charging?

Realme C75 5G has a larger 6000 mAh battery for longer usage. Xiaomi 15 Ultra supports faster wired charging at 90W. Xiaomi 15 Ultra supports wireless charging at 80W, while Realme C75 5G lacks this feature.

Which phone has better water and dust resistance?

Xiaomi 15 Ultra offers better water and dust resistance with an IP68 rating.

Can I buy these phones on Amazon?

Realme C75 5G – Check price here
Xiaomi 15 Ultra – Check price here