LG K40

2019, April 6/10 Rating Updated Sep 5, 2026

In brief: The LG K40 is an entry-level Android smartphone released in 2019, featuring a 5.7-inch HD+ display, a Qualcomm Snapdragon 450 processor, and a dedicated microSD card slot for expandable storage. It offers essential smartphone functionalities at an affordable price point, though camera specifications and internal storage can vary by region and carrier.

Display5.7" HD+ IPS LCD

ChipsetQualcomm Snapdragon 450

Main Camera16 MP (or 13 MP/8 MP depending on variant)

Battery3000 mAh

Starting from $69

💰 LG K40 Price

The LG K40 lowest price is $69, based on current retailer listings.

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📌 Full Specifications

Display

Type	IPS LCD
Size	5.7 inches, 83.8 cm2 (~76.1% screen-to-body ratio)
Resolution	720 x 1440 pixels, 18:9 ratio (~282 ppi density)

Platform

OS	Android 8.1 (Oreo), upgradable to Android 9.0 (Pie) on some variants
Chipset	Qualcomm SDM450 Snapdragon 450 (14 nm)
CPU	Octa-core 1.8 GHz Cortex-A53
GPU	Adreno 506

Memory

Card slot	microSDXC (dedicated slot, up to 2TB)
Internal	32GB 2GB RAM (some variants 16GB 2GB RAM)

Main Camera

Single	16 MP, f/2.0, 1/3.1", 1.0µm, PDAF (some variants feature 13 MP or 8 MP sensors)
Features	LED flash, panorama, HDR
Video	1080p@30fps

Selfie Camera

Single	8 MP, f/2.0 (some variants feature 5 MP sensors)
Features	LED flash (front flash light)
Video	1080p@30fps

Battery

Type	Li-Po 3000 mAh, non-removable (some carrier variants feature 2890 mAh)

Body

Dimensions	153 x 71.9 x 8.3 mm (6.02 x 2.83 x 0.33 in)
Weight	144 g (5.08 oz)
SIM	Single SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by)

Comms

WLAN	Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot
Bluetooth	5.0, A2DP, LE
Positioning	GPS, GLONASS
NFC	Yes (market/region dependent)
Radio	No
USB	microUSB 2.0, USB On-The-Go

Launch

Announced	2019, February
Status	Available. Released 2019, April

⚖ Pros & Cons

Pros

Affordable price point
Expandable storage via microSD
Dedicated Google Assistant button
Fingerprint sensor for security
Decent battery life for its class

Cons

Lower resolution HD+ display
Older Android version at launch (Oreo)
Micro-USB port instead of USB-C
Limited RAM (2GB) for multitasking
Inconsistent camera specifications across variants

★ Our Verdict

The LG K40 provides essential smartphone features at an affordable price, but its aging processor, lower-resolution display, and micro-USB port prevent it from achieving a higher score.

The LG K40 is a suitable option for users seeking a basic, affordable smartphone for everyday tasks like calling, texting, and light social media browsing. Its expandable storage is a plus for those with large media libraries, and the dedicated Google Assistant button offers quick access to voice commands. However, temper expectations regarding performance for demanding apps or gaming, and be aware of the micro-USB port and the older Android version if you prefer the latest technology. It's a good choice for first-time smartphone users or as a secondary device, especially if found at a discounted price.

Reviewed by the infozme.com Editorial Team — see how we research & rate phones.

📦 In The Box & Warranty

LG K40 Smartphone
USB Cable (microUSB)
Travel Adapter/Charger
SIM Tray Ejector
Owner's Manual/Quick Start Guide
Cleaning Cloth (may vary by region)

Typically includes a 1-year limited manufacturer's warranty, though some regions may offer up to 24 months.

❓ Questions & Answers

When was the LG K40 released?

The LG K40 was announced in February 2019 and officially released in April 2019.

Does the LG K40 have a fingerprint sensor?

Yes, the LG K40 features a rear-mounted fingerprint sensor for secure unlocking and authentication.

Can the storage on the LG K40 be expanded?

Yes, the LG K40 comes with a dedicated microSDXC card slot, allowing users to expand its storage capacity by up to 2TB.

What operating system does the LG K40 run?

The LG K40 initially launched with Android 8.1 Oreo, with some regional and carrier variants receiving an update to Android 9.0 Pie.

Is the LG K40 good for gaming?

Equipped with a Qualcomm Snapdragon 450 processor and 2GB of RAM, the LG K40 is suitable for casual mobile games, but it may struggle with more graphically demanding or intensive gaming titles.

What kind of charging port does the LG K40 have?

The LG K40 utilizes a microUSB 2.0 port for both charging and data transfer.