Infinix Note 40X 5G specifications and in-depth review

Infinix Note 40X 5G

Manufacturer: Infinix

The Infinix Note 40X 5G is a mid-range smartphone built around a 6.78″ OLED panel that delivers a contrast ratio of 5,000,000:1 alongside a 120Hz refresh rate for smooth on-screen motion. Running Android 14, it ships with a 12GB RAM configuration and 256GB of internal storage, while also supporting expandable memory through a dedicated card slot. The device measures 168.9 × 76.5 × 8.26 mm and weighs 201 g, giving it a reasonably slim profile for a handset of its screen size.

Under the hood sits the MediaTek Dimensity 6300, a 6 nm octa-core chip clocked at up to 2.4 GHz and paired with an Arm Mali-G57 MC2 GPU running at 950 MHz. It recorded an AnTuTu score of 409,552 and Geekbench 6 results of 782 single-core and 2,012 multi-core. The rear camera system combines a 108 MP main sensor with 8 MP and 2 MP lenses, supporting features such as phase-detection autofocus, slow-motion recording, and manual exposure controls. Connectivity includes 5G, NFC, Bluetooth 5.3, Wi-Fi 5, and USB Type-C, while the 5000 mAh battery supports 18W fast charging and ships with a charger included in the box.

Pros
  • The 108 MP main sensor leads a triple-lens rear camera system with phase-detection autofocus, continuous autofocus during video, HDR mode, slow-motion recording, timelapse, and a range of manual controls including ISO, exposure, focus, and white balance
  • The 6.78-inch OLED/AMOLED display delivers a 5,000,000:1 contrast ratio, 396 ppi pixel density, and a 120Hz refresh rate backed by a 360Hz touch sampling rate
  • A 5000 mAh battery with 18W fast charging ships with a charger included in the box
  • 12GB of DDR4 RAM paired with 256GB of internal storage, plus an external memory slot for further expansion
  • Connectivity is well-rounded, covering 5G, NFC, Bluetooth 5.3, Wi-Fi 5, GPS with Galileo support, and a fingerprint scanner
  • The 3.5 mm headphone jack and built-in radio offer practical wired audio and broadcast listening options
Cons
  • No optical image stabilization on the rear camera, which can affect video and low-light shot stability
  • Wireless charging is not supported, limiting charging flexibility
  • The display lacks HDR10, HDR10+ and Dolby Vision support, reducing compatibility with premium streaming content
  • USB connectivity is limited to USB 2.0 despite the Type-C port, restricting data transfer speeds
  • Audio output relies on a single speaker with no stereo configuration, and none of the high-quality Bluetooth codecs such as aptX, LDAC, or their variants are available
  • No water resistance rating leaves the device unprotected against moisture exposure
Who is this for?

This handset suits everyday users who want a large, visually engaging screen for media consumption, as the 6.78-inch OLED panel with a 120Hz refresh rate delivers smooth scrolling and rich contrast for streaming and browsing. The 5000 mAh battery with fast charging makes it a practical choice for users who spend long hours away from a power outlet. Those who enjoy casual photography will appreciate the triple-lens 108 MP rear camera with its broad set of manual controls, HDR mode, slow-motion recording, and timelapse, while the 3.5 mm jack and built-in radio appeal to users who prefer wired audio or broadcast listening. The dual-SIM slot, 5G support, NFC, and expandable storage round it out for users who need flexible day-to-day connectivity.

Who is this NOT for?

Users who need a device built to handle demanding workloads may find the MediaTek Dimensity 6300 limiting, as its AnTuTu score and Geekbench results reflect a mid-range performance tier that can struggle under sustained heavy multitasking or graphically intensive gaming. The absence of optical image stabilization, a back-illuminated sensor, and optical zoom makes it a poor fit for anyone serious about low-light or telephoto photography. Those who frequently use their device in wet or dusty conditions will be at risk given the complete lack of water or dust resistance, and users who rely on wireless charging or premium Bluetooth codecs for a cable-free audio-and-charging experience will find both absent. The USB 2.0 transfer speed also makes this unsuitable for users who regularly move large files between the device and a computer.

Design:

water resistance None
weight 201 g
thickness 8.26 mm
width 76.5 mm
height 168.9 mm
volume 106.726221 cm³
has a rugged build
can be folded

The Infinix Note 40X 5G has a height of 168.9 mm and a width of 76.5 mm, with a thickness of 8.26 mm that keeps the overall footprint relatively compact for its size class. It weighs 201 g and displaces a volume of approximately 106.73 cm³. The handset does not feature a rugged build and cannot be folded, and it carries no water resistance rating.

Display:

Display type OLED/AMOLED
screen size 6.78"
pixel density 396 ppi
resolution 1080 x 2460 px
refresh rate 120Hz
touch sampling rate 360Hz
has branded damage-resistant glass
supports HDR10
supports HDR10+
Always-On Display
supports Dolby Vision
contrast ratio 5000000:1
Has a secondary screen
has a touch screen

The Infinix Note 40X 5G uses an OLED/AMOLED touchscreen measuring 6.78″ with a resolution of 1080 x 2460 px and a pixel density of 396 ppi, producing sharp and detailed visuals. The panel runs at a 120Hz refresh rate paired with a 360Hz touch sampling rate for responsive input, and it achieves a contrast ratio of 5,000,000:1. The display does not support HDR10, HDR10+, or Dolby Vision, lacks an Always-On Display mode, and does not include branded damage-resistant glass or a secondary screen.

Performance:

internal storage 256GB
RAM 12GB
AnTuTu benchmark score 409552
Chipset (SoC) name MediaTek Dimensity 6300
GPU name Arm Mali-G57 MC2
CPU speed 2 x 2.4 & 6 x 2 GHz
Geekbench 6 result (multi) 2012
Geekbench 6 result (single) 782
GPU clock speed 950 MHz
Has integrated LTE
RAM speed 2133 MHz
semiconductor size 6 nm
Supports 64-bit
DirectX version DirectX 12
Has integrated graphics
Uses big.LITTLE technology
CPU threads 8 threads
Uses HMP
maximum memory bandwidth 17.07 GB/s
L2 cache 1 MB
L1 cache 512 KB
maximum memory amount 12GB
uses multithreading
DDR memory version 4
L3 cache 2 MB

The Infinix Note 40X 5G is powered by the MediaTek Dimensity 6300, a 6 nm octa-core chip running at 2 x 2.4 GHz and 6 x 2 GHz across 8 threads, with support for big.LITTLE technology and Heterogeneous Multi-Processing for efficient workload distribution. It is paired with 12GB of DDR4 RAM at 2133 MHz and 256GB of internal storage, while the Arm Mali-G57 MC2 GPU operates at 950 MHz and supports DirectX 12 through integrated graphics. The chip delivers a maximum memory bandwidth of 17.07 GB/s and carries L1, L2, and L3 caches of 512 KB, 1 MB, and 2 MB respectively. In benchmarks, the device scores 409,552 on AnTuTu and achieves Geekbench 6 results of 782 single-core and 2,012 multi-core. The SoC supports 64-bit processing, multithreading, and integrated LTE.

Cameras:

megapixels (main camera) 108 & 8 & 2 MP
Has a dual-lens (or multi-lens) main camera
megapixels (front camera) 8MP
has built-in optical image stabilization
video recording (main camera) 1440 x 30 fps
number of flash LEDs 4
has a BSI sensor
has a CMOS sensor
has continuous autofocus when recording movies
Has phase-detection autofocus for photos
supports slow-motion video recording
has a built-in HDR mode
has manual exposure
has a flash
optical zoom 0x
has manual ISO
has a serial shot mode
has manual focus
has a front camera
Has laser autofocus
Shoots 360° panorama
has manual white balance
shoots raw
has touch autofocus
has manual shutter speed
can create panoramas in-camera
Has timelapse function
Has a front-facing LED flash
has a dual-lens (or multi-lens) front camera
supports HDR10 recording
supports Dolby Vision recording
has a front-facing camera under the display
Has a RGB LED flash
has 3D photo/video recording capabilities

The Infinix Note 40X 5G features a triple-lens rear camera system combining 108 MP, 8 MP, and 2 MP sensors on a CMOS array, capable of recording video at 1440 x 30 fps. Autofocus options include phase-detection and touch autofocus as well as continuous autofocus during video recording, though laser autofocus is absent. Manual controls cover exposure, ISO, focus, and white balance, while slow-motion video, burst mode, HDR, timelapse, and in-camera panorama are all supported; raw shooting, manual shutter speed, 360° panorama, HDR10 recording, and Dolby Vision recording are not available. The setup uses four flash LEDs at the rear but does not include an optical zoom or a back-illuminated sensor, and optical image stabilization is not present. On the front, an 8 MP single-lens camera handles selfies without a dedicated LED flash or an under-display placement, and 3D photo and video capture is not supported.

Operating system:

Android version Android 14
has clipboard warnings
has location privacy options
has camera/microphone privacy options
has Mail Privacy Protection
has theme customization
can block app tracking
blocks cross-site tracking
has on-device machine learning
has notification permissions
has media picker
Can play games while they download
has dark mode
has Wi-Fi password sharing
has battery health check
has an extra dim mode
has focus modes
has dynamic theming
can offload apps
Has customizable notifications
has Live Text
has full-page screenshots
supports split screen
gets direct OS updates
has PiP
Can be used as a PC
Has sharing intents
has a child lock
Supports widgets
Is free and open source
Has offline voice recognition
has voice commands
Tracks the current position of a mobile device
is a multi-user system
has Quick Start

The Infinix Note 40X 5G runs Android 14 and includes a broad set of privacy controls, covering clipboard warnings, location privacy options, and camera/microphone access management, though Mail Privacy Protection and cross-site tracking blocking are absent. Users can personalize the interface through theme customization and dynamic theming, with dark mode and an extra dim mode also available, while focus modes and app offloading are not supported. The OS accommodates multitasking through split-screen support and Picture-in-Picture, and it allows games to be played while downloading. Additional features include customizable notifications, a media picker, full-page screenshots, Live Text, sharing intents, widgets, a child lock, and a multi-user setup. On-device machine learning, offline voice recognition, voice commands, battery health checking, and phone tracking are all present, and the system is free and open source. Direct OS vendor updates, Wi-Fi password sharing, Quick Start, and the ability to function as a PC are not available.

Battery:

battery power 5000 mAh
has wireless charging
Supports fast charging
charging speed 18W
comes with a charger
has a removable battery
has a battery level indicator
has a rechargeable battery

The Infinix Note 40X 5G houses a 5000 mAh rechargeable battery with a built-in level indicator, and it supports 18W fast charging with a charger included in the box. The battery is not removable, and wireless charging is not supported.

Audio:

has a socket for a 3.5 mm audio jack
has stereo speakers
has aptX
has LDAC
has aptX HD
has aptX Adaptive
has aptX Lossless
Has a radio

The Infinix Note 40X 5G includes a 3.5 mm headphone jack and a built-in radio, offering a couple of practical audio options. It does not feature stereo speakers, and none of the high-quality Bluetooth audio codecs — aptX, aptX HD, aptX Adaptive, aptX Lossless, or LDAC — are supported.

Connectivity & Features:

has 5G support
Wi-Fi version Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac)
SIM cards 2 SIM
Bluetooth version 5.3
has an external memory slot
Has USB Type-C
USB version 2
has NFC
download speed 3300 MBits/s
Has a fingerprint scanner
has emergency SOS via satellite
has crash detection
is DLNA-certified
has a gyroscope
supports ANT+
Has a heart rate monitor
has GPS
has a compass
supports Wi-Fi
Has an infrared sensor
has an accelerometer
has a cellular module
Has a barometer
has an HDMI output
Uses 3D facial recognition
Has an iris scanner
Stylus included
supports Galileo
Has motion tracking
Has optical tracking
Has a built-in projector

The Infinix Note 40X 5G supports 5G connectivity alongside Wi-Fi 4 (802.11n) and Wi-Fi 5 (802.11ac), and it accommodates two SIM cards with a maximum download speed of 3300 MBits/s. Bluetooth 5.3 and NFC are both present, and the device connects via USB Type-C with USB 2.0. An external memory slot expands storage beyond the built-in capacity, while a fingerprint scanner handles biometric authentication; 3D facial recognition and an iris scanner are not included. Onboard sensors cover GPS with Galileo support, a gyroscope, compass, and accelerometer, though a barometer, infrared sensor, heart rate monitor, and motion or optical tracking are absent. Crash detection, emergency SOS via satellite, ANT+, DLNA certification, HDMI output, a stylus, and a built-in projector are likewise not featured.

Miscellaneous:

has a video light
Has sapphire glass display
Has a curved display
Has an e-paper display

The Infinix Note 40X 5G includes a video light to assist with recording in low-light conditions. The display is flat rather than curved, and it features neither sapphire glass nor an e-paper panel.

Final Verdict

The Infinix Note 40X 5G is a mid-range Android 14 smartphone that delivers a solid everyday experience through its combination of a large OLED display, a versatile triple-lens camera, and a long-lasting 5000 mAh battery with fast charging. Its 6.78-inch 120Hz OLED panel stands out as a genuine highlight for users who prioritize screen quality in daily media consumption and browsing, while 5G connectivity, NFC, dual-SIM support, and expandable storage add practical flexibility. The device does carry meaningful trade-offs — the mid-range chipset, absence of optical image stabilization, lack of water resistance, and USB 2.0 speeds place clear limits on what it can handle. For users with straightforward everyday needs who value display quality and camera versatility over raw processing power or rugged durability, the Note 40X 5G covers the essentials competently, making it a reasonable choice within its intended market segment.

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