Samsung Galaxy A31 vs. LG K51S

Phone Comparison, Reviews and Tests

Side by side comparison and review of Samsung Galaxy A31 and LG K51S. Compare sizes, cameras, batteries, memory capacities and other key specifications and features to simplify the choice of your perfect phone. Our goal is to make it easier for you to decide on the phone that will best meet your expectations by revealing the main differences between the products.

Phone Specifications Comparison

Samsung Galaxy A31 vs. LG K51S Comparison Chart
DESIGN AND DIMENSIONS Samsung Galaxy A31 LG K51S
Product Type Smartphone Smartphone
Manufacturer Model Number SM-A315G/DS LM-K510EMW
Form Factor Touch Touch
Height 159.3 mm 165.2 mm LG K51S has greater height than Samsung Galaxy A31.
Width 73.1 mm 76.7 mm LG K51S has greater width than Samsung Galaxy A31.
Depth 8.6 mm 8.26 mm LG K51S is narrower than Samsung Galaxy A31.
Weight 185 g 194 g Samsung Galaxy A31 is lighter than Samsung Galaxy A31.
Body Colour Prism crush black Pink | Titan
Waterproof (Water-resistant) - -
SAR Value 1.68 W/kg (body), 0.488 W/kg (head) 1.335 W/kg (body), 0.501 W/kg (head)
Connector Type USB Type-C - 24 pin USB-C
Headset jack - mini-phone 3.5mm
Headset jack - mini-phone 3.5mm
USB Type-C - 24 pin USB-C
SIM Card Type (Size) Nano SIM Nano SIM
SIM Card Qty Dual-SIM Dual-SIM
DISPLAY Samsung Galaxy A31 LG K51S
Display Type OLED display LCD display
Display Technology Super AMOLED IPS
Screen Size (Display Size) 6.4" 6.55" LG K51S has larger screen size than Samsung Galaxy A31.
Screen Resolution (Display Resolution) 2400 x 1080 pixels 1600 x 720 pixels Samsung Galaxy A31 has better screen resolution than LG K51S.
Display Format Full HD+ HD+
Pixel Density - 268 ppi
Aspect Ratio - 20:9
Max Brightness - 400 cd/m²
Colour Depth 16.7 million colours -
Display Features Night mode, Edge-to-Edge screen, Infinity U Display Reading mode, FullVision display, night mode, hole in display
Display Protection (Screen Protector) - Tempered glass
PROCESSOR Samsung Galaxy A31 LG K51S
Processor Type (CPU) - MediaTek
Processor Number - MT6765
Clock Speed 2 GHz 2.3 GHz LG K51S has higher clock speed than Samsung Galaxy A31.
Processor Core Qty 8-core 8-core Both phones have the same number of phone cores.
64-bit Architecture - Yes LG K51S has 64-bit architecture.
Graphics System (GPU) - IMG PowerVR GE8320
MEMORY Samsung Galaxy A31 LG K51S
RAM 4 GB 3 GB Samsung Galaxy A31 has more RAM than LG K51S.
Internal Memory Size (Storage Capacity) 64 GB 64 GB Both phones have the same internal memory capacity.
User Memory 46.2 GB 50.2 GB
Supported Flash Memory Cards (Expandable Memory) microSDHC, microSDXC - up to 512 GB microSDHC, microSDXC - up to 2 TB
CAMERA Samsung Galaxy A31 LG K51S
MAIN CAMERA
Number of Main Cameras 4 4
Sensor Resolution 48 Megapixel 32 Megapixel Samsung Galaxy A31 has better camera resolution than LG K51S.
Lens Aperture F/2.0 F/1.8 LG K51S has better lens aperture than Samsung Galaxy A31.
Field of View (FoV) 80 degree(s) 76.3 degree(s) Samsung Galaxy A31 has larger lens field of view than LG K51S.
Focus Adjustment Automatic Automatic
Minimum Focal Length (Focal Distance) - 24 mm
Digital Zoom 8x 8x Both phones have the same digital zoom.
Self-Timer Delay - Yes
Special Effects - HDR
Camera Modes Depth bokeh Burst mode, portrait mode, Flowers, Animals, Food, Person, Sunset, Sunrise, City, Landscape
Face Recognition (Face ID) - Face detection LG K51S has face detection.
White Balance - Automatic
Light Source LED flash LED flash
Video Resolutions 1920 x 1080 (1080p) at 30 fps 1920 x 1080 (1080p) at 30 fps
Camera Features (Functions) Live Focus Phase Detect Auto-Focus (PDAF), geotagging, Big Pixels technology, Quad Pixel technology
SECOND CAMERA
Sensor Resolution (2nd Camera) 8 Megapixel 5 Megapixel Samsung Galaxy A31 has better second camera resolution than LG K51S.
Lens Type (2nd Camera) Ultra wide-angle lens Super wide-angle lens
Lens Aperture (2nd Camera) F/2.2 F/2.2 Both phones have the same second camera lens aperture.
Field of View (2nd Camera) 123 degree(s) 115 degree(s) Samsung Galaxy A31 has larger second camera lens field of view than LG K51S.
Minimum Focal Length (2nd Camera) 40 mm 16 mm
Camera Functions (2nd Camera) Macro camera -
THIRD CAMERA
Sensor Resolution (3rd Camera) 5 Megapixel 2 Megapixel Samsung Galaxy A31 has higher resolution third camera than LG K51S.
Lens Aperture (3rd Camera) F/2.4 F/2.4 Both phones have the same lens aperture of the third camera.
Field of View (3rd Camera) - 88.9 degree(s)
Camera Functions (3rd Camera) Depth camera Depth camera
FOURTH CAMERA
Sensor Resolution (4th Camera) 5 Megapixel 2 Megapixel Samsung Galaxy A31 has higher resolution fourth camera than LG K51S.
Lens Aperture (4th Camera) F/2.4 F/2.4 Both phones have the same lens aperture of the fourth camera.
Field of View (4th Camera) - 88.6 degree(s)
Camera Functions (4th Camera) Depth camera Macro camera
Camera Features (4th Camera) - 4cm macro photography
FRONT CAMERA
Number of Front Cameras 1 1
Sensor Resolution (Front) 20 Megapixel 13 Megapixel Samsung Galaxy A31 has better front camera resolution than LG K51S.
Lens Aperture (Front) F/2.2 -
Focus Adjustment Focus free -
Camera Modes (Front) - Gesture Shot, Selfie portrait
Face Recognition (Face ID) - Face detection LG K51S has face detection.
Camera Features (Front) - 17 filters
BATTERY AND CHARGING Samsung Galaxy A31 LG K51S
Battery Capacity (Battery Size) 5000 mAh 4000 mAh Samsung Galaxy A31 has larger battery capacity than LG K51S.
Standby Time - 100 hours
Talk Time 1980 minutes 480 minutes Samsung Galaxy A31 has longer battery life when making calls than LG K51S.
Run Time Details Active online usage (LTE): up to 20 hrs
Active online usage (Wi-Fi): up to 20 hrs
Playback (video): up to 22 hrs
Playback (audio): up to 97 hrs
Talk (LTE): up to 1980 min
Talk: up to 480 min
Standby: up to 100 hrs
Battery Technology - Lithium Ion
CELLULAR Samsung Galaxy A31 LG K51S
Technology WCDMA (UMTS) / GSM WCDMA (UMTS) / GSM
Mobile Broadband Generation 4G 4G Both phones have the same mobile network generation.
Operating System Android 10 Android 9.0 Pie
User Interface One UI LG UX 9
Intelligent Assistant - Google Assistant
Payment Technology Samsung Pay -
Navigation GPS, GLONASS, BeiDou, Galileo GPS
COMMUNICATIONS Samsung Galaxy A31 LG K51S
Data Transmission GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE
2G Band 850 GSM, 900 GSM, 1800 GSM, 1900 GSM 850 GSM, 900 GSM, 1800 GSM, 1900 GSM
3G UMTS Band Band 1, Band 2, Band 4, Band 5, Band 8 -
3G UMTS Frequency 2100, 1900, 1700, 850, 900 -
4G LTE Band Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 12, Band 13, Band 17, Band 20, Band 28, Band 38, Band 40, Band 41, Band 66 Band 1, Band 3, Band 7, Band 8, Band 20, Band 38
4G LTE Frequency FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 700a, FDD 700c, FDD 700b, FDD 800 DD, FDD 700 APT, TDD 2600, TDD 2300, TDD 2500, FDD 1700 - 2110 AWS-3 FDD 2100, FDD 1800+, FDD 2600, FDD 900, FDD 800 DD, TDD 2600
Wireless Interface IEEE 802.11a/b/g/n/ac IEEE 802.11a/b/g/n
Bluetooth Bluetooth 5.0 Bluetooth 5.0 BLE
Bluetooth Profiles - HFP, HSP, OPP, PAN, SPP, GOEP, A2DP, AVRCP, HID, SAP, GAVDP, PBAP, MAP, GATT, HDP, HOGP, ScPP
NFC Yes Yes Both phones have an NFC reader for mobile payments.
Messaging Services SMS, MMS SMS, MMS
MEDIA Samsung Galaxy A31 LG K51S
Supported Digital Audio Standards WAV, WMA, AAC, AMR, MP3, FLAC, XMF, OGG, MIDI, M4A, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, MID WMA, AAC, PCM, MP3, FLAC, AAC +, eAAC+, OPUS, AMR-WB, AMR-NB, Vorbis
Supported Digital Video Standards MKV, FLV, AVI, MPEG-4, WMV, ASF, 3GP, M4V, WebM, 3G2 MKV, FLV, AVI, WMV, ASF, 3GP, TS, WebM, OGM, MP4
Sound Enhancements - DTS: X 3D Surround Sound
FEATURES Samsung Galaxy A31 LG K51S
Phone Functions Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert
Sensors Accelerometer, ambient light sensor, proximity sensor, gyro sensor, hall sensor, geomagnetic sensor Accelerometer, ambient light sensor, proximity sensor, digital compass
Security Devices Fingerprint reader (under display) Fingerprint reader
Additional Phone Features Samsung KNOX, Game Booster, Samsung Smart Switch, Virtual Proximity Sensing DLNA Certified, Dual microphones, KnockON, QuickMemo+ function, Mini View function, Capture+, EasyHome, Clip Tray, Google Lens, AI Cam, Game Tools, Google Assistant Button
OTHERS Samsung Galaxy A31 LG K51S
Included Accessories Power adapter Power adapter, SIM card removal tool, USB-C cable
Compliant Standards - MIL-STD 810G
Other projects: