LG K40 vs Samsung Galaxy J7 (2018)

A spec-by-spec comparison of the LG K40 and the Samsung Galaxy J7 (2018), taken from their full specification sheets. Green marks the better value in each measured row.

LG K40

From $69

Full specs, price & review →

Samsung Galaxy J7 (2018)

From $7,518

Full specs, price & review →

Head to head

	LG K40	Samsung Galaxy J7 (2018)
Price	$69	$7,518
Our rating	6/10	6/10
Battery	3,000 mAh	3,300 mAh
RAM (max)	2 GB	2 GB
Storage (max)	32 GB	512 GB
Screen size	5.7 in	5.5 in
Main camera	16 MP	13 MP
Weight (lower is lighter)	144 g	181 g
Released	Apr 2019	Jul 2018

Summary: LG K40 is ahead on screen size, main camera, weight (lower is lighter). Samsung Galaxy J7 (2018) is ahead on battery, storage (max).

★ Which should you buy? LG K40 is the stronger overall pick on the measured specs.

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

Display

	LG K40	Samsung Galaxy J7 (2018)
Type	IPS LCD	TFT LCD
Size	5.7 inches, 83.8 cm2 (~76.1% screen-to-body ratio)	5.5 inches
Resolution	720 x 1440 pixels, 18:9 ratio (~282 ppi density)	720 x 1280 pixels, 16:9 ratio (~267 ppi density)
Protection	—	Corning Gorilla Glass 5

Platform

	LG K40	Samsung Galaxy J7 (2018)
OS	Android 8.1 (Oreo), upgradable to Android 9.0 (Pie) on some variants	Android 8.0 Oreo, upgradable to Android 9.0 Pie with One UI
Chipset	Qualcomm SDM450 Snapdragon 450 (14 nm)	Exynos 7870 Octa (14 nm)
CPU	Octa-core 1.8 GHz Cortex-A53	Octa-core 1.6 GHz Cortex-A53
GPU	Adreno 506	Mali-T830 MP1

Memory

	LG K40	Samsung Galaxy J7 (2018)
Card slot	microSDXC (dedicated slot, up to 2TB)	microSDXC (dedicated slot), expandable up to 256GB or 512GB
Internal	32GB 2GB RAM (some variants 16GB 2GB RAM)	16GB 2GB RAM, 32GB 2GB RAM

Main Camera

	LG K40	Samsung Galaxy J7 (2018)
Single	16 MP, f/2.0, 1/3.1", 1.0µm, PDAF (some variants feature 13 MP or 8 MP sensors)	13 MP, f/1.9 (wide), AF
Features	LED flash, panorama, HDR	LED flash, HDR, panorama
Video	1080p@30fps	1080p@30fps

Selfie Camera

	LG K40	Samsung Galaxy J7 (2018)
Single	8 MP, f/2.0 (some variants feature 5 MP sensors)	13 MP, f/1.9 (wide) or 5 MP (operator-dependent)
Features	LED flash (front flash light)	LED flash (on some variants)
Video	1080p@30fps	1080p@30fps

Battery

	LG K40	Samsung Galaxy J7 (2018)
Type	Li-Po 3000 mAh, non-removable (some carrier variants feature 2890 mAh)	Li-Ion 3300 mAh, non-removable
Charging	—	Standard charging

Body

	LG K40	Samsung Galaxy J7 (2018)
Dimensions	153 x 71.9 x 8.3 mm (6.02 x 2.83 x 0.33 in)	153.2 x 76.2 x 8.6 mm (6.03 x 3.00 x 0.34 in)
Weight	144 g (5.08 oz)	181 g (6.38 oz)
SIM	Single SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by)	Single SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by)
Build	—	Plastic back and frame, Corning Gorilla Glass 5 front

Comms

	LG K40	Samsung Galaxy J7 (2018)
WLAN	Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot	Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Bluetooth	5.0, A2DP, LE	4.2, A2DP, LE
Positioning	GPS, GLONASS	GPS, GLONASS, BDS
NFC	Yes (market/region dependent)	Yes (operator-dependent)
Radio	No	FM radio
USB	microUSB 2.0, USB On-The-Go	microUSB 2.0, OTG

Launch

	LG K40	Samsung Galaxy J7 (2018)
Announced	2019, February	June 2018
Status	Available. Released 2019, April	Available. Released July 2018

Frequently asked questions

Which has the better battery, LG K40 or Samsung Galaxy J7 (2018)?

Samsung Galaxy J7 (2018) — 3,000 mAh for the LG K40 versus 3,300 mAh for the Samsung Galaxy J7 (2018).

Which is lighter, LG K40 or Samsung Galaxy J7 (2018)?

LG K40 — 144 g for the LG K40 versus 181 g for the Samsung Galaxy J7 (2018).

Which is newer, LG K40 or Samsung Galaxy J7 (2018)?

LG K40 — Apr 2019 for the LG K40 versus Jul 2018 for the Samsung Galaxy J7 (2018).

Is the LG K40 or the Samsung Galaxy J7 (2018) rated higher?

We rate the LG K40 6/10 and the Samsung Galaxy J7 (2018) 6/10.

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