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.
DESIGN AND DIMENSIONS | LG K51S | Microsoft Surface Duo |
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Product Type | Smartphone | Smartphone | |
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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 |
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Display Type | LCD display | OLED display | |
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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 |
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Second Display Type | - | OLED display - colour | |
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Second Display Screen Size | - | 5.6" | |
Second Display Resolution | - | 1800 x 1350 pixels |
UNFOLDED DISPLAY |
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Unfolded Display Screen Size | - | 8.1 in | |
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Unfolded Display Resolution | - | 2700 x 1800 pixels |
PROCESSOR | LG K51S | Microsoft Surface Duo |
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Processor Type (CPU) | MediaTek | Qualcomm Snapdragon 855 | |
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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 |
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RAM | 3 GB | 6 GB | Microsoft Surface Duo has more RAM than LG K51S. |
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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 |
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MAIN CAMERA |
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Number of Main Cameras | 4 | 0 | |
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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 |
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Sensor Resolution (2nd Camera) | 5 Megapixel | - | |
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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 |
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Sensor Resolution (3rd Camera) | 2 Megapixel | - | |
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Lens Aperture (3rd Camera) | F/2.4 | - | |
Field of View (3rd Camera) | 88.9 degree(s) | - | |
Camera Functions (3rd Camera) | Depth camera | - |
FOURTH CAMERA |
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Sensor Resolution (4th Camera) | 2 Megapixel | - | |
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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 |
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Number of Front Cameras | 1 | 1 | |
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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 |
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Battery Capacity (Battery Size) | 4000 mAh | 3577 mAh | LG K51S has larger battery capacity than Microsoft Surface Duo. |
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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 |
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Battery Technology | Lithium Ion | - |
CELLULAR | LG K51S | Microsoft Surface Duo |
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Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
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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 |
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Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE | GPRS, FDD-LTE, TDD-LTE, LAA | |
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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 |
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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 | |
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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 |
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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 | |
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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 |
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Included Accessories | Power adapter, SIM card removal tool, USB-C cable | SIM card removal tool, USB-C headphones, 18W charger, Surface Duo Bumper (Glacier) | |
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Compliant Standards | MIL-STD 810G | - |