Infinix Smart 20

Display6.78" 720 x 1576 pixels
ChipsetMediatek Helio G81 Ultimate (12 nm)
Main camera8MP
Battery5200 mAh
Smart 20 product photo
5.4GoSolo score
ReviewMore Infinix

Network

Technology
GSM / HSPA / LTE
2G bands
GSM 850 / 900 / 1800 / 1900
3G bands
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands
1, 2, 3, 4, 5, 7, 8, 20, 28, 38, 41, 40
Speed
HSPA, LTE

Launch

Announced
2026, March 04
Status
Available

Body

Dimensions
167.7 x 78.8 x 7.7 mm (6.60 x 3.10 x 0.30 in)
Weight
-
Build
Glass front, plastic back, plastic frame
SIM
Nano-SIM + Nano-SIM
Durability
IP64 dust tight and water resistant (water splashes) Drop resistant up to 1.5m

Display

Type
IPS LCD, 120Hz, 700 nits (HBM)
Size
6.78 inches, 109.5 cm2 (~82.9% screen-to-body ratio)
Resolution
720 x 1576 pixels, 19.5:9 ratio (~259 ppi density)

Platform

OS
Android 16, XOS 16
Chipset
Mediatek Helio G81 Ultimate (12 nm)
CPU
Octa-core (2x2.0 GHz Cortex-A75 & 6x1.7 GHz Cortex-A55)
GPU
Mali-G52 MC2

Memory

Card slot
microSDXC (dedicated slot)
Internal
64GB 4GB RAM, 128GB 4GB RAM
Type
eMMC 5.1

Main Camera

Modules
8 MP, f/2.0, (wide), 1/4.0", 1.12µm, AF
Features
Dual-LED flash, panorama
Video
1440p@30fps, 1080p@30fps

Selfie Camera

Module
8 MP, f/2.0, (wide), 1/4.0", 1.12µm
Features
1440p@30fps, 1080p@30fps

Comms

WLAN
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Bluetooth
Yes
Positioning
GPS
NFC
Yes
Radio
FM radio
USB
USB Type-C 2.0, OTG

Features

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

Battery

Type
5200 mAh

Misc

Colors
Shadow Black, Cloudline Blue, Polaris Titanium, Sunlike Orange
Models
X6840, X6840B
GoSolo Read / what it means7 takeaways
display
120Hz IPS LCD, 700 nits peakThe 120Hz refresh keeps scrolling smooth and the 700-nit brightness (HBM) handles direct sunlight, though the 259 ppi 720p resolution on a 6.78-inch screen means text and icons won't be razor-sharp up close.
performance
Helio G81 Ultimate, Mali-G52 GPUThis chipset runs everyday apps and lighter games (Genshin Impact, PUBG on low settings) without lag, but demanding titles or sustained gaming will throttle after a few minutes due to thermal limits.
battery
5200 mAh, roughly 1 full dayAbout 6 to 8 hours of screen-on time with moderate use; a day of mixed texting, calls, and browsing is possible, but streaming video or gaming will drain it by evening.
camera
8MP main and selfie, 1440p videoBoth cameras handle 1440p@30fps video and basic daytime shots, but the 8MP sensor and 1/4-inch size mean low light will show grain and zoom is digital-only.
durability
IP64, drop-proof to 1.5mIP64 blocks dust and resists splashes, and the phone survives accidental drops up to 1.5 meters; the glass front will break if dropped on a corner, but the overall protection is solid for daily use.
storage
64/128GB eMMC 5.1, microSD sloteMMC 5.1 is slower than UFS but adequate for everyday file handling; the dedicated microSD slot lets you expand storage for media without sacrificing a SIM.
connectivity
LTE, dual SIM, Wi-Fi ac, NFCLTE bands cover most regions, dual Nano-SIM lets you carry two numbers, Wi-Fi ac is standard, and NFC enables mobile payments in compatible markets.

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