Infinix Smart 20 4GB RAM 256GB
Overview
The Infinix Smart 20 4GB/256GB is an affordable smartphone designed for everyday communication, entertainment, browsing and productivity. It combines a large 6.78-inch display, a smooth 120Hz refresh rate, a MediaTek Helio G81 Ultimate processor and a 5,200mAh battery to provide practical features for daily smartphone use.
With 4GB RAM and 256GB internal storage, this configuration provides room for applications, photographs, videos, music and personal documents. Its Android 16 operating system with XOS 16 offers a modern software experience, while the 8MP rear and front cameras provide convenient options for everyday photography and video calls.
The Infinix Smart 20 also features dual SIM connectivity, expandable storage, stereo speakers and IP64 dust and splash resistance, making it a practical choice for users looking for an affordable smartphone with useful everyday features.
Product Description



Large 6.78-inch display with 120Hz refresh rate
The Infinix Smart 20 features a 6.78-inch IPS LCD display that provides a spacious viewing area for browsing, watching videos, reading messages and using applications.
Its HD+ resolution of 720 × 1576 pixels delivers clear visuals for everyday activities. The 120Hz refresh rate makes scrolling through social media, navigating menus and browsing websites appear smoother compared with conventional 60Hz displays.
With brightness of up to 700 nits in high-brightness mode, the screen is designed to remain visible in different lighting environments.
MediaTek Helio G81 Ultimate processor
Powering the Infinix Smart 20 is the MediaTek Helio G81 Ultimate processor, an octa-core chipset designed for everyday smartphone performance.
It handles common activities such as WhatsApp messaging, web browsing, video streaming, social media and light gaming. Its Mali-G52 MC2 graphics processor supports the visual requirements of compatible games and applications.
The processor provides a practical balance of performance and power efficiency for users who need a dependable smartphone for regular daily activities.
4GB RAM and 256GB internal storage
The 4GB RAM configuration supports everyday multitasking, allowing you to move between commonly used applications and services.
Its 256GB internal storage provides generous room for photographs, videos, applications, music and documents. This capacity is useful for users who prefer keeping their files and entertainment content directly on their phones.
The Smart 20 also supports microSDXC memory card expansion through a dedicated card slot, providing additional storage flexibility for compatible files.
8MP rear camera for everyday photography
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The Infinix Smart 20 comes with an 8MP rear camera featuring autofocus and dual LED flash. It is designed for everyday photography, including capturing personal moments, documents, family photographs and casual outdoor pictures.
Available camera modes include AI Cam, Portrait, Panorama, Pro and Super Night. These options provide additional flexibility when photographing different subjects and environments.
The rear camera also supports video recording at up to 1440p at 30 frames per second.
8MP front camera for selfies and video calls
The 8MP front camera provides a convenient way to capture selfies and participate in video calls. It is suitable for everyday communication, social media photographs and personal recordings.
Front camera features include AI-assisted photography and screen flash support, helping improve visibility when taking pictures in darker environments.
5,200mAh battery for extended everyday use
The Infinix Smart 20 is equipped with a 5,200mAh battery designed to support everyday smartphone activities. You can use it for calls, messaging, browsing, music, video streaming and other regular tasks.
The battery capacity provides a practical advantage for users who spend considerable time on their phones throughout the day.
Actual battery performance depends on screen brightness, network conditions, applications and individual usage habits.
15W charging and reverse charging
The phone supports 15W wired charging through its USB Type-C connection. This provides a convenient way to recharge the device when the battery runs low.
It also supports 5W reverse wired charging, allowing it to supply power to compatible accessories and devices when needed.
Android 16 with XOS 16
The Infinix Smart 20 runs Android 16 with Infinix’s XOS 16 interface. The software provides a modern user experience with customisation options, system tools and features designed to make everyday smartphone use convenient.
Its interface allows users to manage applications, personalise their home screen and access essential smartphone functions.
Dual SIM and 4G connectivity
The Smart 20 supports dual Nano-SIM functionality and 4G LTE connectivity. This allows users to maintain two mobile lines on one device, making it convenient to separate personal and business communication.
Other connectivity features include Wi-Fi, Bluetooth, GPS and USB Type-C. The phone also includes an infrared port, FM radio and a 3.5mm headphone jack.
Stereo speakers and entertainment features
The Infinix Smart 20 features stereo speakers designed to provide a more engaging audio experience when watching videos, listening to music or playing games.
The inclusion of a 3.5mm headphone jack also makes it convenient to connect compatible wired headphones without requiring a separate adapter.
IP64 dust and splash resistance
The phone carries an IP64 rating for dust protection and resistance against water splashes under specified testing conditions. Its construction also carries a stated drop-resistance rating of up to 1.5 metres under specified conditions.
These features provide additional reassurance during normal everyday handling. However, the device is not waterproof and should not be submerged in water.
Key Features
- 4GB RAM and 256GB internal storage.
- MediaTek Helio G81 Ultimate processor.
- 6.78-inch IPS LCD display.
- HD+ resolution of 720 × 1576 pixels.
- 120Hz refresh rate.
- 700 nits high-brightness mode.
- 8MP rear camera with autofocus.
- Dual LED rear flash.
- 8MP front camera.
- Rear video recording up to 1440p at 30fps.
- 5,200mAh battery.
- 15W wired charging.
- 5W reverse wired charging.
- Android 16 with XOS 16.
- Dual Nano-SIM support.
- 4G LTE connectivity.
- Dedicated microSDXC card slot.
- Stereo speakers.
- 3.5mm headphone jack.
- USB Type-C connectivity.
- Side-mounted fingerprint sensor.
- IP64 dust and splash resistance.
- Infrared port and FM radio.
Infinix Smart 20 4GB/256GB Specifications
| Specification | Details |
|---|---|
| Brand | Infinix |
| Model | Smart 20 |
| Model number | X6840 |
| RAM | 4GB |
| Internal storage | 256GB retail configuration |
| Expandable storage | microSDXC |
| Processor | MediaTek Helio G81 Ultimate |
| CPU | Octa-core |
| GPU | Mali-G52 MC2 |
| Operating system | Android 16 |
| User interface | XOS 16 |
| Display type | IPS LCD |
| Display size | 6.78 inches |
| Resolution | 720 × 1576 pixels |
| Refresh rate | 120Hz |
| Rear camera | 8MP with autofocus |
| Front camera | 8MP |
| Rear video | Up to 1440p at 30fps |
| Battery | 5,200mAh |
| Charging | 15W wired |
| Reverse charging | 5W wired |
| Network | 2G, 3G and 4G LTE |
| SIM | Dual Nano-SIM |
| Wi-Fi | Dual-band Wi-Fi |
| Bluetooth | Supported |
| USB | Type-C 2.0 |
| Audio | Stereo speakers, 3.5mm headphone jack |
| Fingerprint | Side-mounted |
| Water and dust resistance | IP64 |
| Dimensions | 167.7 × 78.8 × 7.7mm |
| Colours | Shadow Black, Cloudline Blue, Polaris Titanium, Sunlike Orange |
Why Choose the Infinix Smart 20 4GB/256GB?
The Infinix Smart 20 is a practical choice for users who want an affordable smartphone with generous storage and useful everyday features. Its 6.78-inch 120Hz display provides a smooth viewing experience, while the Helio G81 Ultimate processor handles common applications and daily communication.
The 256GB storage capacity offers plenty of room for personal files, photographs and applications. Its 5,200mAh battery, dual SIM support, stereo speakers and expandable storage add further convenience.
It is suitable for students, first-time smartphone users, business communication and anyone looking for a dependable device for everyday use.
Buy Infinix Smart 20 4GB/256GB in Kenya
Get the Infinix Smart 20 4GB RAM and 256GB storage from 254mobiles in Nairobi, Kenya. Enjoy a large 120Hz display, generous storage, reliable everyday performance and a long-lasting battery in an affordable smartphone.
Call or WhatsApp 254mobiles on +254 111 503 604 to check availability, pricing and delivery options.
Visit our shop:
254mobiles
Rehema House, 3rd Floor, Room 1
Behind Sarova Stanley Hotel, Standard Street
Nairobi, Kenya



















