Infinix Note 40X vs vivo Y400 – Price, Specs & Features

Q: Which phone has better performance, the Infinix Note 40X or the vivo Y400?

In this performance comparison, the vivo Y400 with its Snapdragon 4 Gen 2 (4nm) performs better than the Infinix Note 40X with the Dimensity 6300 (6nm), thanks to superior chipset efficiency.

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Infinix Note 40X

Dimensity 6300
6 nm
5000 mAh
18W
6.78"
1080x2460 pixels
108 MP
1440p@30fps
Specs

vivo Y400

Snapdragon 4 Gen 2
4 nm
6000 mAh
90W
6.67"
1080 x 2400 pixels
50 MP
1080p@30fps
Specs

vivo Y400

General

Launch Date

August 05, 2024

August 04, 2025

Availability

Available Now

Android 14

Android 15

Custom UI

XOS 14

Funtouch 15

OS Updates

2 Years

Security Updates

3 Years

AI Features

AI Image Studio, AI Erase 2.0, AI Transcript Assist, AI Note Assist, AI Documents, Circle to Search, Focus Mode, Screen Translation and more

Body

Dimensions

168.9 x 76.5 x 8.3 mm

162.3 x 75.3 x 7.9 mm

Thickness

8.3 mm

7.9 mm

Weight

201 g

197 g

Build Details

Plastic Back, Plastic Frame

IP Rating

IP52 (dust and splash resistant)

IP69 (dust tight and water resistant (high pressure water jets; immersible up to 2m for 30 min), MIL-STD-810H compliant*, also IP68 rated)

Display

Size

6.78 inches

6.67 inches

Type

AMOLED

Refresh Rate

120 Hz

Peak Brightness

500 nits

1800 nits

Resolution

1080x2460 pixels

1080 x 2400 pixels

Pixel Density

396 ppi

395 ppi

Aspect Ratio

20:9

Screen to Body Ratio

84.5 %

87.9 %

Performance

Chipset¹

Mediatek Dimensity 6300

Qualcomm Snapdragon 4 Gen 2

Process Size

6 nm

4 nm

CPU

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

Octa-core
2x2.2 GHz Cortex-A78
6x1.95 GHz Cortex-A55

GPU

Mali-G57 MC2

Adreno 613

RAM & Storage

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

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

RAM Type

LPDDR4X

Expandable Memory

Yes

Camera

Main Camera

108 MP
f/1.8, (wide), PDAF

2 MP
macro

2 MP

50 MP
f/1.8, (wide), 1/1.95", 0.8µm, PDAF

2 MP
f/2.4, (depth)

OIS

Features

Quad-LED flash, HDR, panorama, Digital Zoom, Auto Flash, Face detection

Ring-LED flash, panorama, HDR

Video Recording

1440p@30fps
1080p@30/60fps

1080p@30fps

Video Recording Features

Dual Video Recording, Short Video Mode

Selfie Camera

8 MP
wide

32 MP
f/2.45, (wide), 1/3.1", 0.7µm

Selfie Features

Dual-LED flash

Selfie Video Recording

1080p@30fps

Connectivity

SIM

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

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

SIM 1

10 5G Bands

FDD: N1, N3, N5, N8, N28
TDD: N38, N40, N41, N77, N78

8 5G Bands

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

SIM 2

10 5G Bands

FDD: N1, N3, N5, N8, N28
TDD: N38, N40, N41, N77, N78

8 5G Bands

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

VoLTE

Yes

Wi-Fi

Wi-Fi 5

Wi-Fi Details

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

Wi-Fi Features

Mobile Hotspot

USB

USB Type-C 2.0, OTG

Bluetooth

5.3

5.0

NFC

Yes

GPS

Yes with A-GPS

Yes with Glonass

Infrared

Yes

UWB (Ultra Wideband)

Battery

Capacity

5000 mAh

6000 mAh

Type

Li-Polymer

Li-Ion

Removable

Wired charging

18W

90W

Charging Speed

50% in 31 min

50% in 20 min

Wireless Charging

Reverse Wireless Charging

Charger in the Box

Yes

Sound

Stereo Speakers

Yes

3.5mm Headphone Jack

Yes

FM Radio

Extra Features

Sensors

Fingerprint (side-mounted), accelerometer, proximity, compass

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

Colors and Pricing

Colors

Palm Blue, Lime Green, Starlit Black

Glam White, Olive Green

Price in India

₹19500

₹21999

FAQs

Which phone has better performance?

In this performance comparison, the vivo Y400 with its Qualcomm Snapdragon 4 Gen 2 (4nm) performs better than the Infinix Note 40X with the Mediatek Dimensity 6300 (6nm), thanks to superior chipset efficiency.

Which phone offers longer software support?

Both Infinix Note 40X and vivo Y400 offer the same software support — 2 years of OS updates and 3 years of security updates.

Which phone has a better display?

Both Infinix Note 40X and vivo Y400 feature AMOLED displays, offering vibrant colors and deeper blacks. Both smartphones offer the same 120 Hz refresh rate. vivo Y400 also boasts a brighter screen with 1800 nits of peak brightness, enhancing outdoor visibility. Both phones have the same screen resolution.

Which phone has a bigger battery and faster charging?

vivo Y400 features a larger 6000 mAh battery, potentially delivering better battery life. vivo Y400 also supports faster wired charging at 90W, compared to 18W on Infinix Note 40X.

Which phone has better water and dust resistance?

vivo Y400 offers better protection against water and dust with an IP69 rating.

Can I buy these phones on Amazon?

Infinix Note 40X – Check price here
vivo Y400 – Check price here

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