Oppo F31 Pro Plus vs Oppo K13x – Price, Specs & Features

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Oppo F31 Pro Plus

Snapdragon 7 Gen 3
4 nm
7000 mAh
80W
6.8"
1280 x 2800 pixels
50 MP
4K@30fps
Specs

Oppo K13x

Dimensity 6300
6 nm
6000 mAh
45W
6.67"
720 x 1604 pixels
50 MP
1080p@30/60fps
Specs

Oppo K13x

General

Launch Date

September 16, 2025

June 23, 2025

Availability

Available Now

Android 15

Custom UI

ColorOS 15

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

Google Gemini, AI Writer, AI Summary, Screen Translator, AI Eraser, AI Motion, AI Portrait and More

Body

Dimensions

163.1 x 77.6 x 7.7 mm

165.7 x 76.2 x 7.9 mm

Thickness

7.7 mm

7.9 mm

Weight

195 g

194 g

Build Details

Plastic Back

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)

IP65 (dust tight and water resistant (low pressure water jets), MIL-STD-810H compliant*)

Display

Size

6.8 inches

6.67 inches

Type

AMOLED, 1B colors

IPS LCD

Refresh Rate

120 Hz

Peak Brightness

1600 nits

1000 nits

Resolution

1280 x 2800 pixels

720 x 1604 pixels

Pixel Density

453 ppi

264 ppi

Aspect Ratio

19.5:9

20:9

Screen to Body Ratio

89.1 %

85.2 %

Protection

AGC DT-Star D+

Gorilla Glass 7i

Performance

Chipset¹

Qualcomm Snapdragon 7 Gen 3

Mediatek Dimensity 6300

Process Size

4 nm

6 nm

CPU

Octa-core
1x2.63 GHz Cortex-A715
3x2.4 GHz Cortex-A715
4x1.8 GHz Cortex-A510

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

GPU

Adreno 720

Mali-G57 MC2

RAM & Storage

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

4GB 128GB (UFS 2.2)
6GB 128GB (UFS 2.2)
8GB 256GB (UFS 2.2)

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

50 MP
OmniVision OV50D, f/1.8, (wide), PDAF

2 MP,
f/2.4, (Mono)

OIS

Yes

Features

Color spectrum sensor, LED flash, HDR, panorama

LED flash, HDR, panorama

Video Recording

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

1080p@30/60fps

Selfie Camera

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

8 MP
GalaxyCore GC08A8, f/2.0, (wide)

Selfie Features

Panorama

Selfie Video Recording

1080p@30fps, gyro-EIS

1080p@30fps

Connectivity

SIM

Dual SIM (Nano + Nano)

Dual SIM
SIM1: Nano, SIM2: Nano (Hybrid)

5G Support

Yes

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

Yes

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

VoLTE

Yes

Wi-Fi

Wi-Fi 6

Wi-Fi 5

Wi-Fi Details

802.11 ax, MIMO

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

Wi-Fi Features

Mobile Hotspot

USB

USB Type-C 2.0, OTG

Bluetooth

5.2

5.4

NFC

Yes

GPS

Yes

Yes with A-GPS, Glonass

Infrared

UWB (Ultra Wideband)

Battery

Capacity

7000 mAh

6000 mAh

Type

Si/C Li-Ion

Li-Po

Removable

Wired charging

80W

45W

Charging Speed

100% in 61 mins

50% in 37 min

Reverse Wired Charging

Wireless Charging

Reverse Wireless Charging

Charger in the Box

Yes

Sound

Stereo Speakers

Yes

3.5mm Headphone Jack

Yes

FM Radio

Extra Features

Sensors

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

Side-mounted fingerprint sensor, accelerometer, proximity, compass

Colors and Pricing

Colors

Festival Pink, Himalayan White, Gemstone Blue

Midnight Violet, Sunset Peach, Breeze Blue, Mist White

Price in India

₹32999

₹11999

FAQs

Which phone has better performance?

In this performance comparison, the Oppo F31 Pro Plus with its Qualcomm Snapdragon 7 Gen 3 (4nm) performs better than the Oppo K13x with the Mediatek Dimensity 6300 (6nm), thanks to superior chipset efficiency.

Which phone offers longer software support?

Both Oppo F31 Pro Plus and Oppo K13x 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 Plus features a superior AMOLED display, while Oppo K13x comes with an LCD panel. Both smartphones offer the same 120 Hz refresh rate. Oppo F31 Pro Plus also boasts a brighter screen with 1600 nits of peak brightness, enhancing outdoor visibility. Notably, Oppo F31 Pro Plus 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 Plus comes with a larger 7000 mAh battery, which may offer longer usage on a single charge. Oppo F31 Pro Plus also supports faster wired charging at 80W, compared to 45W on Oppo K13x.

Which phone has better water and dust resistance?

Oppo F31 Pro Plus offers better protection against water and dust with an IP69 rating.

Can I buy these phones on Amazon?

Oppo F31 Pro Plus – Check price here

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