Redmi A3x 4G vs Xiaomi 15 – Price, Specs & Features

Q: Which phone has better performance, the Redmi A3x 4G or the Xiaomi 15?

In this comparison, the Xiaomi 15 with the Snapdragon 8 Elite (3 nm) performs better than the Redmi A3x 4G with the Unisoc T603 (12 nm), thanks to its more efficient chipset.

Redmi A3x 4G alternatives

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Xiaomi 15 alternatives

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Google Pixel 9

Apple iPhone 16 Pro

Apple iPhone 15

Samsung Galaxy S23 Ultra

Xiaomi 15 Ultra

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Redmi A3x 4G

Unisoc T603
12 nm
5000 mAh
10W
6.71"
720x1650 pixels
8 MP
1080p@30fps

Xiaomi 15

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

Xiaomi 15

General

Launch Date

May 24, 2024

March 11, 2025

Availability

Available Now

Android 14

Android 15

Custom UI

MIUI

HyperOS 2

OS Updates

2 Years

4 Years

Security Updates

3 Years

6 Years

AI Features

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

Body

Dimensions

168.4 x 76.3 x 8.3 mm

152.3 x 71.2 x 8.1 mm

Thickness

8.3 mm

8.1 mm

Weight

193 g

189 g

Build Details

Mineral Glass

Aluminum Alloy Frame

IP Rating

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

Display

Size

6.71 inches

6.36 inches

Type

IPS LCD

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

Refresh Rate

90 Hz

120 Hz

Peak Brightness

500 nits

3200 nits

Resolution

720x1650 pixels

1200 x 2670 pixels

Pixel Density

268 ppi

460 ppi

Aspect Ratio

20.5:9

20:9

Screen to Body Ratio

82.9 %

90.0 %

Protection

Gorilla Glass 3

Performance

Chipset

Unisoc Unisoc T603

Qualcomm Snapdragon 8 Elite

Process Size

12 nm

3 nm

CPU

Octa core
1.8 GHz, Dual core, Cortex A75
1.6 GHz, Hexa Core, Cortex A55

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

GPU

Mali-G57

Adreno 830

RAM & Storage

3GB 64GB (eMMC 5.1)
4GB 128GB (eMMC 5.1)

12GB 512GB (UFS 4.0)

RAM Type

LPDDR4X

LPDDR5X

Expandable Memory

Yes

Camera

Main Camera

8 MP
f/2.0, (wide)

0.08 MP
(auxiliary lens)

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, HDR, Digital Zoom

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

Video Recording

1080p@30fps

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

Selfie Camera

5 MP
f/2.2, (wide)

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

Selfie Features

HDR

HDR, panorama

Selfie Video Recording

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 5G Bands

19 Bands

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

SIM 2 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 4

Wi-Fi 7

Wi-Fi Details

802.11 b/g/n

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

Wi-Fi Features

Mobile Hotspot

Wi-Fi Direct, Mobile Hotspot

USB

USB Type-C

USB Type-C 3.2 Gen2, Display Port, OTG

Bluetooth

4.2

5.4

NFC

Yes

GPS

Yes with Glonass

Yes with A-GPS, Glonass

Infrared

Yes

UWB (Ultra Wideband)

Battery

Capacity

5000 mAh

5240 mAh

Type

Li-Polymer

Si/C Li-Ion

Removable

Wired charging

10W

90W

Wireless Charging

50W

Reverse Wireless Charging

10W

Charger in the Box

Yes

Sound

Stereo Speakers

Yes

3.5mm Headphone Jack

Yes

FM Radio

Yes

Extra Features

Sensors

Fingerprint (side-mounted), accelerometer, compass

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

Others

Virtual proximity sensing

Colors and Pricing

Colors

Midnight Black, Moonlight White, Aurora Green

Black, White and Green

Price in India

₹6999

₹64999

FAQs

Which phone has better performance?

In this comparison, the Xiaomi 15 with the Qualcomm Snapdragon 8 Elite (3nm) performs better than the Redmi A3x 4G with the Unisoc Unisoc T603 (12nm), thanks to its more efficient chipset.

Which phone offers longer software support?

The Xiaomi 15 offers 4 years of OS updates, while the Redmi A3x 4G provides 2 years. When it comes to security updates, Xiaomi 15 leads with 6 years of support.

Which phone has a better display?

Xiaomi 15 has a superior AMOLED display, while Redmi A3x 4G uses an LCD panel. Moreover, Xiaomi 15 offers a higher 120 Hz refresh rate for smoother scrolling. Xiaomi 15 also has a brighter display with 3200 nits, improving outdoor visibility. Notably, Xiaomi 15 has a higher resolution display, resulting in sharper visuals.

Which phone has a bigger battery and faster charging?

Xiaomi 15 has a larger 5240 mAh battery for longer usage. Xiaomi 15 supports faster wired charging at 90W. Xiaomi 15 supports wireless charging at 50W, while Redmi A3x 4G lacks this feature.

Which phone has better water and dust resistance?

Xiaomi 15 has an IP68 rating, while Redmi A3x 4G lacks official water and dust resistance.