LG K51S vs. Microsoft Surface Duo

Phone Comparison, Reviews and Tests

In depth comparison and review of LG K51S and Microsoft Surface Duo. Compare sizes, cameras, batteries, memory, and other important specifications and features to easily choose the right phone for you. Our goal is to help you uncover differences between the products and find the phone that will best fit your needs.

Phone Specifications Comparison

LG K51S vs. Microsoft Surface Duo Comparison Chart
DESIGN AND DIMENSIONS LG K51S Microsoft Surface Duo
Product Type Smartphone Smartphone
Manufacturer Model Number LM-K510EMW -
Form Factor Touch Folder - dual screen
Height 165.2 mm 145.2 mm LG K51S has greater height than Microsoft Surface Duo.
Width 76.7 mm 93.3 mm Microsoft Surface Duo has greater width than LG K51S.
Depth 8.26 mm 9.9 mm LG K51S is narrower than LG K51S.
Weight 194 g 250 g LG K51S is lighter than LG K51S.
Dimensions Details - Unfolded - 186.9 mm x 4.8 mm x 145.2 mm
Body Colour Pink | Titan Glacier
Waterproof (Water-resistant) - -
SAR Value 1.335 W/kg (body), 0.501 W/kg (head) 0.726 W/kg (head), 1.478 W/kg (body)
Connector Type Headset jack - mini-phone 3.5mm
USB Type-C - 24 pin USB-C
USB Type-C - 24 pin USB-C
SIM Card Type (Size) Nano SIM Nano SIM, Electronic SIM card (e-SIM)
SIM Card Qty Dual-SIM Dual-SIM
DISPLAY LG K51S Microsoft Surface Duo
Display Type LCD display OLED display
Display Technology IPS AMOLED
Foldable Display - Yes
Display Design - Both directions folding
Screen Size (Display Size) 6.55" 5.6" LG K51S has larger screen size than Microsoft Surface Duo.
Screen Resolution (Display Resolution) 1600 x 720 pixels 1800 x 1350 pixels Microsoft Surface Duo has better screen resolution than LG K51S.
Display Format HD+ -
Pixel Density 268 ppi 401 ppi Microsoft Surface Duo has better pixel density than LG K51S.
Aspect Ratio 20:9 4:3
Max Brightness 400 cd/m² -
Display Features Reading mode, FullVision display, night mode, hole in display PixelSense Fusion Displays
Display Protection (Screen Protector) Tempered glass Corning Gorilla Glass (scratch resistant glass)
SECOND DISPLAY
Second Display Type - OLED display - colour
Second Display Screen Size - 5.6"
Second Display Resolution - 1800 x 1350 pixels
UNFOLDED DISPLAY
Unfolded Display Screen Size - 8.1 in
Unfolded Display Resolution - 2700 x 1800 pixels
PROCESSOR LG K51S Microsoft Surface Duo
Processor Type (CPU) MediaTek Qualcomm Snapdragon 855
Processor Number MT6765 -
Clock Speed 2.3 GHz -
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 LG K51S Microsoft Surface Duo
RAM 3 GB 6 GB Microsoft Surface Duo has more RAM than LG K51S.
Internal Memory Size (Storage Capacity) 64 GB 128 GB Microsoft Surface Duo has more internal memory than LG K51S.
User Memory 50.2 GB -
Memory Interface - UFS 3.0
Supported Flash Memory Cards (Expandable Memory) microSDHC, microSDXC - up to 2 TB -
CAMERA LG K51S Microsoft Surface Duo
MAIN CAMERA
Number of Main Cameras 4 0
Sensor Resolution 32 Megapixel -
Lens Aperture F/1.8 -
Field of View (FoV) 76.3 degree(s) -
Focus Adjustment Automatic -
Minimum Focal Length (Focal Distance) 24 mm -
Digital Zoom 8x -
Self-Timer Delay Yes -
Special Effects HDR -
Camera Modes 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 -
Video Resolutions 1920 x 1080 (1080p) at 30 fps -
Camera Features (Functions) Phase Detect Auto-Focus (PDAF), geotagging, Big Pixels technology, Quad Pixel technology -
SECOND CAMERA
Sensor Resolution (2nd Camera) 5 Megapixel -
Lens Type (2nd Camera) Super wide-angle lens -
Lens Aperture (2nd Camera) F/2.2 -
Field of View (2nd Camera) 115 degree(s) -
Minimum Focal Length (2nd Camera) 16 mm -
THIRD CAMERA
Sensor Resolution (3rd Camera) 2 Megapixel -
Lens Aperture (3rd Camera) F/2.4 -
Field of View (3rd Camera) 88.9 degree(s) -
Camera Functions (3rd Camera) Depth camera -
FOURTH CAMERA
Sensor Resolution (4th Camera) 2 Megapixel -
Lens Aperture (4th Camera) F/2.4 -
Field of View (4th Camera) 88.6 degree(s) -
Camera Functions (4th Camera) Macro camera -
Camera Features (4th Camera) 4cm macro photography -
FRONT CAMERA
Number of Front Cameras 1 1
Sensor Resolution (Front) 13 Megapixel 11 Megapixel LG K51S has better front camera resolution than Microsoft Surface Duo.
Lens Aperture (Front) - F/2.0
Field of View (Front) - 84 degree(s)
Pixel Size (Front) - 1 μm
Special Effects (Front) - HDR
Camera Modes (Front) Gesture Shot, Selfie portrait Burst mode, Panorama, low-light shots, Portrait mode with adjustable depth control
Face Recognition (Face ID) Face detection - LG K51S has face detection.
Light Source (Front) - High CRI LED flash
Video Resolutions (Front) - 1920 x 1080 (1080p) at 30 fps, 1920 x 1080 (1080p) at 60 fps, 3840 x 2160 (4K) at 30 fps, 3840 x 2160 (4K) at 60 fps
Camera Features (Front) 17 filters Phase Detect Auto-Focus (PDAF), FOV optimised with AI (for front and rear), dynamic range scene detection, Super-resolution zoom, super zoom up to 7x, gyro-based digital video stabilisation
BATTERY AND CHARGING LG K51S Microsoft Surface Duo
Battery Capacity (Battery Size) 4000 mAh 3577 mAh LG K51S has larger battery capacity than Microsoft Surface Duo.
Standby Time 100 hours 240 hours Microsoft Surface Duo has longer standby time than LG K51S.
Talk Time 480 minutes 1620 minutes Microsoft Surface Duo has longer battery life when making calls than LG K51S.
Run Time Details Talk: up to 480 min
Standby: up to 100 hrs
Standby: up to 240 hrs
Talk: up to 1620 min
Playback (local video): up to 15.5 hrs
Battery Technology Lithium Ion -
CELLULAR LG K51S Microsoft Surface Duo
Technology WCDMA (UMTS) / GSM WCDMA (UMTS) / GSM
Mobile Broadband Generation 4G 4G Both phones have the same mobile network generation.
Operating System Android 9.0 Pie Android 10
User Interface LG UX 9 -
Intelligent Assistant Google Assistant Google Assistant
Navigation GPS GPS, GLONASS, BeiDou, Galileo, QZSS
COMMUNICATIONS LG K51S Microsoft Surface Duo
Data Transmission GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE GPRS, FDD-LTE, TDD-LTE, LAA
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 5, Band 8
3G UMTS Frequency - 2100, 1900, 850, 900
4G LTE Band Band 1, Band 3, Band 7, Band 8, Band 20, Band 38 Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 12, Band 13, Band 14, Band 19, Band 20, Band 25, Band 26, Band 28, Band 29, Band 30, Band 38, Band 39, Band 40, Band 41, Band 46, Band 66
4G LTE Frequency FDD 2100, FDD 1800+, FDD 2600, FDD 900, FDD 800 DD, TDD 2600 FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 700a, FDD 700c, FDD 700 PS, FDD 800 upper, FDD 800 DD, FDD 1900+, FDD 850+, FDD 700 APT, FDD 700d, FDD 2300 WCS, TDD 2600, TDD 1900, TDD 2300, TDD 2500, TDD 5150, FDD 1700 - 2110 AWS-3
Wireless Interface IEEE 802.11a/b/g/n IEEE 802.11ac
Bluetooth Bluetooth 5.0 BLE Bluetooth 5.0
Bluetooth Profiles HFP, HSP, OPP, PAN, SPP, GOEP, A2DP, AVRCP, HID, SAP, GAVDP, PBAP, MAP, GATT, HDP, HOGP, ScPP -
NFC Yes - LG K51S has NFC reader for mobile payments.
Messaging Services SMS, MMS -
MEDIA LG K51S Microsoft Surface Duo
Supported Digital Audio Standards WMA, AAC, PCM, MP3, FLAC, AAC +, eAAC+, OPUS, AMR-WB, AMR-NB, Vorbis WAV, AAC, AMR, MP3, FLAC, OGG, MIDI, M4A, apt-X, IMY, RTTTL, RTX, OTA, MID
Supported Digital Video Standards MKV, FLV, AVI, WMV, ASF, 3GP, TS, WebM, OGM, MP4 MKV, FLV, AVI, MOV, WMV, 3GP, TS, WebM, H.265 HEVC, MP4
Sound Enhancements DTS: X 3D Surround Sound Qualcomm aptX audio
FEATURES LG K51S Microsoft Surface Duo
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, digital compass Proximity sensor, hall sensor, dual accelerometers, dual gyroscope, dual magnetometer, dual ambient light sensor
Security Devices Fingerprint reader Fingerprint reader (side)
Additional Phone Features DLNA Certified, Dual microphones, KnockON, QuickMemo+ function, Mini View function, Capture+, EasyHome, Clip Tray, Google Lens, AI Cam, Game Tools, Google Assistant Button MIMO technology, Fast Charging, dual microphones with noise suppression and echo cancellation, Full Duplex communication, 360° hinge, stylus support, two apps side-by-side
OTHERS LG K51S Microsoft Surface Duo
Included Accessories Power adapter, SIM card removal tool, USB-C cable SIM card removal tool, USB-C headphones, 18W charger, Surface Duo Bumper (Glacier)
Compliant Standards MIL-STD 810G -
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