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

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Xiaomi 15 Ultra alternatives

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Realme 15T

Dimensity 6400
6 nm
7000 mAh
60W
6.57"
1080 x 2372 pixels
50 MP
1080p@30/60
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

September 02, 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 Edit Genie, Circle to Search, AI Smart Loop and more

HyperAI, AI Write, AI Summary and more

Body

Dimensions

158.4 x 75.2 x 7.8 mm

161.3 x 75.3 x 9.4 mm

Thickness

7.8 mm

9.4 mm

Weight

181 g

226 g

Build Details

Plastic Frame, Plastic Back

Glass-fiber Back Or Vegan Leather, Aluminum Frame

IP Rating

IP69 (dust tight and water resistant (high pressure water jets; immersible up to 2.5m for 30 min), also IP68 rated)

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

Display

Size

6.57 inches

6.73 inches

Type

AMOLED, 1B colors

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

Refresh Rate

120 Hz

Peak Brightness

4000 nits

3200 nits

Resolution

1080 x 2372 pixels

1440 x 3200 pixels

Pixel Density

401 ppi

522 ppi

Aspect Ratio

19.8:9

20:9

Screen to Body Ratio

86.4 %

89.7 %

Performance

Chipset¹

Mediatek Dimensity 6400 Max

Qualcomm Snapdragon 8 Elite

Process Size

6 nm

3 nm

CPU

Octa-core
2x2.5 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

8GB 128GB (UFS 2.2)
8GB 256GB (UFS 2.2)
12GB 256GB (UFS 2.2)

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

RAM Type

LPDDR4X

LPDDR5X

Expandable Memory

Yes

Camera

Main Camera

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

2 MP
f/2.4

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

1080p@30/60
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

50 MP
f/2.4, OmniVision OV50D40

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

Selfie Features

HDR, panorama

Selfie Video Recording

1080p@30fps

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

Connectivity

SIM

Dual SIM (Nano + Nano (Hybrid))

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 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

7000 mAh

5410 mAh

Type

Si/C Li-Ion

Removable

Wired charging

60W

90W

Charging Speed

50% in 31 mins

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

Silk Blue, Suit Titanium, Flowing Silver

Chrome Silver

Price in India

₹20999

₹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 15T with the Mediatek Dimensity 6400 (6nm), thanks to superior chipset efficiency.

Which phone offers longer software support?

Xiaomi 15 Ultra offers 4 years of OS updates, whereas Realme 15T provides 3 years. For security updates, Xiaomi 15 Ultra offers 6 years of support compared to Realme 15T's 4 years.

Which phone has a better display?

Both Realme 15T and Xiaomi 15 Ultra feature AMOLED displays, offering vibrant colors and deeper blacks. Both smartphones offer the same 120 Hz refresh rate. Realme 15T also boasts a brighter screen with 4000 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 15T 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 60W on Realme 15T. Xiaomi 15 Ultra supports wireless charging at 80W, while Realme 15T lacks this feature.

Which phone has better water and dust resistance?

Realme 15T 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.