Samsung Galaxy J7 Refine vs LG K51 Specs Comparison

Compare mobile phone specifications of up to three devices at once. Our specs comparison tool helps you find and compare the perfect phone for your needs.

Samsung Galaxy J7 Refine LG K51
Released · Jun 29, 2018
Released · May 06, 2020
5.5-inch · 1280x720px
6.5-inch · 1560x720px
Single camera
Triple camera
2GB · 32GB
3GB · 32GB
3300 mAh
4000 mAh

Design

Dimensions
6.03 x 3 x 0.34 inches
153.2 x 76.2 x 8.6 mm
6.57 x 3.07 x 0.33 inches
166.9 x 77.9 x 8.4 mm
Weight
6.38 oz (181.0 g) 7.17 oz (203.4 g)
Resistance
Yes; MIL-STD-810 certified
Biometrics
2D Face unlock Fingerprint (touch)
Features
Touch sensitive control keys
Keys
Left: Volume control; Right: Lock/Unlock key Left: Volume control; Right: Lock/Unlock key
Colors
Gold Titan gray

Display

Size
5.5-inch 6.5-inch
Resolution
1280x720px, 16:9 ratio, 267 PPI 1560x720px, 19.5:9 ratio, 264 PPI
Technology
TFT IPS LCD
Screen-to-body
71.45 % 79.70 %
Colors
16 777 216
Features
Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor Ambient light sensor, Proximity sensor

Hardware

System chip
Samsung Exynos 7 Octa 7884 (14 nm) MediaTek Helio P22 MT6762 (12 nm)
Processor
Octa-core
1600 MHz
ARM Cortex-A53
Octa-core
2000 MHz
Arm Cortex-A53
GPU
Mali-T830 MP1 IMG PowerVR GE8320
RAM
2GB (LPDDR3) 3GB
Internal storage
32GB 32GB, available to use: 18 GB
Storage expansion
microSDXC up to 400 GB microSDXC up to 2000 GB
OS
Android (8.0 Oreo) Android (10)

Battery

Capacity
3300 mAh 4000 mAh
Type
Li - Polymer Li - Ion

Camera

Rear
Single camera Triple camera
Main camera
13 MP (PDAF)
Aperture size: F1.7
Focal length: 28 mm
Sensor size: 1/3.06"
Pixel size: 1.12 μm
13 MP (PDAF)
Aperture size: F1.8
Sensor size: 1/3"
Pixel size: 1.12 μm
Second camera
5 MP (Ultra-wide)
Aperture size: F2.2
Sensor size: 1/5"
Pixel size: 1.12 μm
Third camera
2 MP (Depth information)
Sensor size: 1/5"
Pixel size: 1.75 μm
Flash
LED LED
Video recording
1920x1080 (Full HD) (30 fps)
Video calling, Video sharing
1920x1080 (Full HD)
Picture-taking during video recording
Front
13 MP 13 MP, Video capture: 1920x1080 (Full HD)

Connectivity & Features

Bluetooth
4.2 5.0
WLAN
802.11 a,b,g,n,ac,dual-band
Hotspot, Wi-Fi Direct
802.11 a,b,g,n,ac,dual-band
Wi-Fi Direct, Hotspot
USB
microUSB, USB 2.0 Type-C, USB 2.0
Hearing aid compatible
M3/T3 M3/T3
Location
GPS, A-GPS, Glonass GPS, A-GPS, Cell ID, Wi-Fi positioning
Sensors
Accelerometer, Gyroscope, Compass Accelerometer, Gyroscope, Compass
Other
ANT+, UMA (Wi-Fi Calling), VoIP, Tethering, Computer sync, OTA sync

Multimedia

Headphones
3.5mm jack 3.5mm jack
Speakers
Earpiece, Loudspeaker Earpiece, Multiple speakers
Features
Album art cover, Background playback DTS:X Virtual Surround
Screen mirroring
Wireless screen share Wireless screen share
Radio
FM
Additional microphone(s)
Yes Noise cancellation

Cellular

4G (FDD)
Bands 25(1900+), 26(850+) Bands 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 12(700 a), 13(700 c), 20(800 DD), 25(1900+), 26(850+), 66(AWS-3), 71(600)
4G (TDD)
Bands 41(2600+) Bands 41(2600+)
3G
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)
Data Speed
LTE-A Cat 6 (300/50 Mbit/s), HSPA, HSUPA LTE-A Cat 6 (300/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
SIM type
Nano SIM Nano SIM
HD Voice
Yes Yes
VoLTE
Yes

Phone Features

Notifications
Haptic feedback, Music ringtones, Vibration, Flight mode, Silent mode, Speakerphone
Other features
Voice dialing, Voice commands, Voice recording, TTY/TDD

Regulatory Approval

FCC approval
Date approved: May 07, 2018
FCC ID value: A3LSMJ737P
Date approved: Jun 16, 2020
FCC ID value: ZNFL555DL
Measured SAR
Head: 0.96 W/kg
Body: 0.76 W/kg
Simultaneous Transmission: 1.59 W/kg
Wireless Router: 1.20 W/kg
Phablet: 3.91 W/kg
Head: 0.66 W/kg
Body: 1.20 W/kg
Simultaneous Transmission: 1.59 W/kg
Wireless Router: 1.27 W/kg
Phablet: 3.96 W/kg

Buyers information

MSRP
$ 200
In The Box
Charger, USB Cable, Important Information Booklet Charger, USB Cable, SIM Ejector

Availability

Officially announced
Jun 29, 2018 May 06, 2020

Alternative variants

for Boost Mobile
OS Android (9.0 Pie)
4G (FDD) Bands 2(1900), 4(AWS-1), 5(850), 12(700 a), 13(700 c), 25(1900+), 26(850+), 66(AWS-3), 71(600)
for Verizon
4G (FDD) Bands 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 12(700 a), 13(700 c), 20(800 DD), 66(AWS-3)
MSRP $ 170
for Metro
4G (FDD) Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 12(700 a), 13(700 c), 20(800 DD), 25(1900+), 26(850+), 66(AWS-3), 71(600)
4G (TDD) Bands 38(2600), 41(2600+)
3G Bands 5(850), 4(1700/2100), 2(1900), 1(2100)
FCC OKs Cingular\'s purchase of AT&T Wireless