Oppo F31 Pro vs Redmi A3x 4G – Price, Specs & Features

Q: Which phone has better performance, the Oppo F31 Pro or the Redmi A3x 4G?

In this performance comparison, the Oppo F31 Pro with its Dimensity 7300 (4nm) performs better than the Redmi A3x 4G with the Unisoc T603 (12nm), thanks to superior chipset efficiency.

Oppo F31 Pro alternatives

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Samsung Galaxy S24 FE

Redmi A3x 4G alternatives

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Samsung Galaxy A05 4G

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Oppo F31 Pro

Dimensity 7300
4 nm
7000 mAh
80W
6.57"
1080 x 2372 pixels
50 MP
4K@30fps
Specs

Redmi A3x 4G

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

Redmi A3x 4G

General

Launch Date

September 16, 2025

May 24, 2024

Availability

Available Now

Android 15

Android 14

Custom UI

ColorOS 15

MIUI

OS Updates

2 Years

Security Updates

3 Years

AI Features

AI LinkBoost 3.0, AI VoiceScribe, AI Call Assistant, AI Assistant for Notes, Google Gemini, AI Eraser 2.0 and more

Body

Dimensions

158.2 x 75 x 8.1 mm

168.4 x 76.3 x 8.3 mm

Thickness

8.1 mm

8.3 mm

Weight

190 g

193 g

Build Details

Plastic Back

Mineral Glass

IP Rating

IP69 (dust tight and water resistant (high pressure water jets; immersible up to 1.5m for 30 min), MIL-STD-810H compliant*, also IP68 rated)

Display

Size

6.57 inches

6.71 inches

Type

AMOLED, 1B colors

IPS LCD

Refresh Rate

120 Hz

90 Hz

Peak Brightness

1400 nits

500 nits

Resolution

1080 x 2372 pixels

720x1650 pixels

Pixel Density

397 ppi

268 ppi

Aspect Ratio

20:9

20.5:9

Screen to Body Ratio

88.5 %

82.9 %

Protection

DT-Star D+

Gorilla Glass 3

Performance

Chipset¹

Mediatek Dimensity 7300 Energy

Unisoc Unisoc T603

Process Size

4 nm

12 nm

CPU

Octa-core
4x2.5 GHz Cortex-A78
4x2.0 GHz Cortex-A55

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

GPU

Mali-G615 MC2

Mali-G57

RAM & Storage

8GB 128GB (UFS 3.1)
8GB 256GB (UFS 3.1)
12GB 256GB (UFS 3.1)

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

RAM Type

LPDDR4X

Expandable Memory

Yes

Camera

Main Camera

50 MP
f/1.8, (wide), 1/2.88", 0.61µm, OmniVision OV50D40, PDAF, OIS, Up to 10x Optical Zoom

2 MP
f/2.4, (depth), 1/1.5", 1.75µm

8 MP
f/2.0, (wide)

0.08 MP
(auxiliary lens)

OIS

Yes

Features

Color spectrum sensor, LED flash, HDR, panorama

LED flash, HDR, Digital Zoom

Video Recording

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

1080p@30fps

Selfie Camera

32 MP
f/2.4, (wide), f/2.4, 1/3.1", 0.7µm, GalaxyCore 32E2

5 MP
f/2.2, (wide)

Selfie Features

Panorama

HDR

Selfie Video Recording

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

1080p@30fps

Connectivity

SIM

Dual SIM (Nano + Nano)

Dual SIM, GSM+GSM
SIM1: Nano, SIM2: Nano

5G Support

Yes

10 5G bands
n1, n3, n5, n8, n28, n38, n40, n41, n77, n78

Yes

VoLTE

Yes

Wi-Fi

Wi-Fi 6

Wi-Fi 4

Wi-Fi Details

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

802.11 b/g/n

Wi-Fi Features

Mobile Hotspot

USB

USB Type-C 2.0, OTG

USB Type-C

Bluetooth

5.4

4.2

NFC

Yes

GPS

Yes

Yes with Glonass

Infrared

Yes

UWB (Ultra Wideband)

Battery

Capacity

7000 mAh

5000 mAh

Type

Si/C Li-Ion

Li-Polymer

Removable

Wired charging

80W

10W

Charging Speed

100% in 61 mins

Reverse Wired Charging

10W

Wireless Charging

Reverse Wireless Charging

Charger in the Box

Yes

Sound

Stereo Speakers

Yes

3.5mm Headphone Jack

Yes

FM Radio

Yes

Extra Features

Sensors

Under-display optical fingerprint sensor, accelerometer, gyroscope, proximity, compass

Fingerprint (side-mounted), accelerometer, compass

Others

Virtual proximity sensing

Colors and Pricing

Colors

Space Grey, Desert Gold

Midnight Black, Moonlight White, Aurora Green

Price in India

₹26999

₹6799

FAQs

Which phone has better performance?

In this performance comparison, the Oppo F31 Pro with its Mediatek Dimensity 7300 (4nm) performs better than the Redmi A3x 4G with the Unisoc Unisoc T603 (12nm), thanks to superior chipset efficiency.

Which phone offers longer software support?

Both Oppo F31 Pro and Redmi A3x 4G offer the same software support — 2 years of OS updates and 3 years of security updates.

Which phone has a better display?

Oppo F31 Pro features a superior AMOLED display, while Redmi A3x 4G comes with an LCD panel. In terms of smoothness, Oppo F31 Pro offers a higher 120 Hz refresh rate, ensuring fluid scrolling and animations. Oppo F31 Pro also boasts a brighter screen with 1400 nits of peak brightness, enhancing outdoor visibility. Notably, Oppo F31 Pro offers a higher screen resolution, resulting in sharper visuals and more detailed content.

Which phone has a bigger battery and faster charging?

Oppo F31 Pro comes with a larger 7000 mAh battery, which may offer longer usage on a single charge. Oppo F31 Pro also supports faster wired charging at 80W, compared to 10W on Redmi A3x 4G.

Which phone has better water and dust resistance?

Oppo F31 Pro includes an IP69 rating, while Redmi A3x 4G lacks an official IP rating.

Can I buy these phones on Amazon?

Oppo F31 Pro – Check price here

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