Samsung Galaxy S9+ 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.

9.0
Samsung Galaxy S9+
Samsung Galaxy S9+ LG K51
Released · Mar 16, 2018
Released · May 06, 2020
6.2-inch
6.5-inch
Dual camera
Triple camera
6GB · 64GB
3GB · 32GB
3500 mAh
4000 mAh

Design

Dimensions
6.22 x 2.91 x 0.33 inches
158.1 x 73.8 x 8.5 mm
6.57 x 3.07 x 0.33 inches
166.9 x 77.9 x 8.4 mm
Weight
6.67 oz (189.0 g) 7.17 oz (203.4 g)
Materials
Back: Glass (Corning Gorilla Glass 5)
Frame: Aluminum
Resistance
Water, Dust; IP68 Yes; MIL-STD-810 certified
Biometrics
Iris scanner, 2D Face unlock, Fingerprint (touch) Fingerprint (touch)
Features
Notification light
Keys
Left: Volume control, Other; Right: Lock/Unlock key Left: Volume control; Right: Lock/Unlock key
Colors
Midnight black, Coral blue, Titanium gray, Lilac purple, Burgundy red, Sunrise gold, Ice blue, Polaris blue Titan gray

Display

Size
6.2-inch 6.5-inch
Resolution
2960x1440px, 18.5:9 ratio, 531 PPI 1560x720px, 19.5:9 ratio, 264 PPI
Technology
Super AMOLED IPS LCD
Screen-to-body
83.68 % 79.70 %
Features
HDR support, Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor Ambient light sensor, Proximity sensor

Hardware

System chip
Qualcomm Snapdragon 845 SDM845 (10 nm) MediaTek Helio P22 MT6762 (12 nm)
Processor
Octa-core
2800 MHz
Kryo 385
Octa-core
2000 MHz
Arm Cortex-A53
GPU
Adreno 630 IMG PowerVR GE8320
RAM
6GB (LPDDR4) 3GB
Internal storage
64GB 32GB, available to use: 18 GB
Storage expansion
microSDXC up to 400 GB microSDXC up to 2000 GB
OS
Android (10, 9.0 Pie, 8.0 Oreo), Samsung One UI Android (10)

Battery

Capacity
3500 mAh 4000 mAh
Type
Li - Ion Li - Ion
Charging
Qualcomm Quick Charge 2.0, Samsung Adaptive Fast Charging, Qi and Powermat wireless charging

Camera

Rear
Dual camera Triple camera
Main camera
12 MP (OIS, PDAF)
Aperture size: F1.5/F2.4
Focal length: 26 mm
Sensor size: 1/2.55"
Pixel size: 1.4 μm
13 MP (PDAF)
Aperture size: F1.8
Sensor size: 1/3"
Pixel size: 1.12 μm
Second camera
12 MP (Telephoto, OIS, Autofocus)
Optical zoom: 2.0x
Aperture size: F2.4
Focal Length: 52 mm
Sensor size: 1/3.6"
Pixel size: 1 μm
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
3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (240 fps), 1280x720 (HD) (960 fps)
HDR, Time-lapse video, Hyperlapse, Continuous autofocus, Object tracking, Picture-taking during video recording, EIS, Video calling, Video sharing
1920x1080 (Full HD)
Picture-taking during video recording
Front
8 MP (Autofocus, HDR), Video capture: 2560x1440 (QHD) (30 fps) 13 MP, Video capture: 1920x1080 (Full HD)

Connectivity & Features

Bluetooth
5.0 5.0
WLAN
802.11 a,b,g,n,ac,dual-band
MIMO, Wi-Fi Direct, Hotspot
802.11 a,b,g,n,ac,dual-band
Wi-Fi Direct, Hotspot
USB
Type-C, USB 3.1 Type-C, USB 2.0
Hearing aid compatible
M3/T3
Location
GPS, A-GPS, Glonass, Galileo, BeiDou GPS, A-GPS, Cell ID, Wi-Fi positioning
Sensors
Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer Accelerometer, Gyroscope, Compass
Other
NFC, ANT+

Multimedia

Headphones
3.5mm jack 3.5mm jack
Speakers
Earpiece, Multiple speakers Earpiece, Multiple speakers
Features
32-Bit DAC, Dolby Atmos, aptX-HD DTS:X Virtual Surround
Screen mirroring
Wireless screen share Wireless screen share
Radio
FM FM
Additional microphone(s)
Noise cancellation Noise cancellation

Cellular

4G (FDD)
Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 13(700 c), 14(700 PS), 17(700 b), 18(800 Lower), 19(800 Upper), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 29(700 d), 30(2300 WCS), 66(AWS-3), 71(600) 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 38(2600), 39(1900+), 40(2300), 41(2600+), 46 Bands 41(2600+)
3G
Bands 5(850), 8(900), 4(1700/2100), 2(1900), 1(2100) Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)
Data Speed
LTE-A Pro Cat 18 (1200/150 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, 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
VoLTE
Yes

Regulatory Approval

FCC approval
Date approved: Jan 11, 2018
FCC ID value: A3LSMG965U
Date approved: Jun 16, 2020
FCC ID value: ZNFL555DL
Measured SAR
Head: 0.36 W/kg
Body: 0.79 W/kg
Simultaneous Transmission: 1.59 W/kg
Wireless Router: 1.04 W/kg
Phablet: 3.94 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
$ 840 $ 200
In The Box
Charger, USB Cable, SIM Ejector

Availability

Officially announced
Feb 25, 2018 May 06, 2020

Alternative variants

International version
System chip Samsung Exynos 9 9810 (10 nm)
Processor Octa-core
2900 MHz
Exynos M3 and ARM Cortex-A55
GPU Mali-G72 MP18
FCC approval Date approved: Dec 27, 2017
FCC ID value: A3LSMG965F
Measured SAR Head: 0.23 W/kg
Body: 0.58 W/kg
Simultaneous Transmission: 1.46 W/kg
Wireless Router: 1.05 W/kg
Phablet: 3.68 W/kg
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)
with Dual SIM
System chip Samsung Exynos 9 9810 (10 nm)
Processor Octa-core
2900 MHz
Exynos M3 and ARM Cortex-A55
GPU Mali-G72 MP18
Dual SIM Yes
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
with 256 GB storage
Internal storage 256GB
MSRP $ 940
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)
with 128 GB storage
Internal storage 128GB
MSRP $ 890
FCC OKs Cingular\'s purchase of AT&T Wireless