LG K42 vs Infinix Smart 20 HD

LG K42 vs Infinix Smart 20 HD is too close to call — 4.8 overall against 5.1. The LG K42 launched in 2020; the Infinix Smart 20 HD in 2026. Infinix Smart 20 HD has the bigger battery — 5,000 mAh against 4,000 mAh.

LG K42: Specifications are still being confirmed — scores appear as data is verified.

Infinix Smart 20 HD: Limited confirmed specifications — categories without real data are not scored.

LG K42

LG K42

LG · Phone

4.8/ 10 — Below average

$199.72≈ €178 · ≈ £149≈ converted at today's rate · Buy on Amazon

Full specs & details
Infinix Smart 20 HD

Infinix Smart 20 HD

Infinix · Phone

5.1/ 10 — Below average

Check price on Amazon.com · Amazon.de · Amazon.co.uk

Full specs & details

Key highlights

HighlightLG K42Infinix Smart 20 HD
ProcessorMediatek MT6762 Helio P22 (12 nm)Unisoc T7250 (12 nm)
Display6.6″ · IPS LCD6.67″ · IPS LCD · 120 Hz
Main camera—8 MP wide (f/2, 1/4.0", 1.12µm)
Battery4,000 mAh · 10W charging5,000 mAh · 15W charging
RAM / Storage3GB / 64GB3GB / 64GB

Which is better?

  • LG K42 vs Infinix Smart 20 HD is too close to call — 4.8 overall against 5.1.
  • Infinix Smart 20 HD takes 3 of the 5 categories both phones are scored in.
  • Infinix Smart 20 HD has the bigger battery — 5,000 mAh against 4,000 mAh.
  • Infinix Smart 20 HD charges faster — 15W wired against 10W.

Category scores

CategoryLG K42Infinix Smart 20 HD
Performance3.03.6Better
Display5.2Tie5.3Tie
Battery5.56.7Better
Software5.8Tie6.0Tie
Audio6.57.3Better
Camera—3.4
Design & Build—6.2
Call Quality—6.3

Open the interactive comparisonRadar chart, winner highlights and a differences-only view.

Reasons to consider

Infinix Smart 20 HD

  • Faster charging (15W vs 10W)
  • Bigger battery (5,000 mAh vs 4,000 mAh)

Full specifications side by side

SpecificationLG K42Infinix Smart 20 HD
Launch
Launch statusAvailableAvailable
Release date21 Sep 20206 Oct 2026
Platform
OSAndroidAndroid
OS versionAndroid 10Android 15, XOS 15.1
ChipsetHelio P22—
Chipset (as published)Mediatek MT6762 Helio P22 (12 nm)Unisoc T7250 (12 nm)
CPUOcta-core 2.0 GHz Cortex-A53Octa-core (2x1.8 GHz Cortex-A75 & 6x1.6 GHz Cortex-A55)
GPUPowerVR GE8320Mali-G57 MP1
Infinix Smart 20 HD wins narrowly on Performance (3.0 vs 3.6)
Memory
Memory variants (RAM/storage)3 GB RAM + 64 GB3 GB RAM + 64 GB
Card slot—Dedicated slot
Display
Display size6.6″6.67″
Resolution720 × 1,600 pixels720 × 1,600 pixels
Panel typeIPS LCDIPS LCD
Refresh rate—120 Hz
Brightness (peak)—700 nits
Battery
Battery capacity4,000 mAh5,000 mAh
Wired charging10W15W
Infinix Smart 20 HD wins clearly on Battery (5.5 vs 6.7)
Body & build
Dimensions165 × 76.7 × 8.4 mm165.6 × 77 × 8.3 mm
Weight182 g—
SIMDual SIM (Nano-SIM, dual stand-by)Nano-SIM + Nano-SIM
Materials—Glass, Plastic
Colours—Night Pulse, Silver Dancer, Sunlike Orange
Connectivity
BluetoothBluetooth 5—
NFCYesYes
USBUSB Type-C 2.0, USB On-The-GoUSB Type-C 2.0, OTG
PositioningGPSGPS
Audio
3.5mm jackYesYes
Loudspeaker—Stereo
Camera
Front cameras8 MP wide8 MP wide (f/2, 1/4.0", 1.12µm)
Rear cameras—8 MP wide (f/2, 1/4.0", 1.12µm)
Video (max)—1440p@30fps
Features
Sensors—Accelerometer, Proximity, Compass
Fingerprint—Side-mounted
Network
Network technologies—2G, 3G, 4G
Additional specifications
Main Camera · FeaturesLED flash, panorama, HDRDual-LED flash, panorama
Selfie Camera · Single8 MP, (wide)8 MP, f/2.0, (wide), 1/4.0", 1.12µm
Connectivity · RadioNoFM radio

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