In depth comparison and review of LG K51S and Samsung Galaxy S21+ 5G. 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 | Samsung Galaxy S21+ 5G |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | LM-K510EMW | SM-G996B/DS | |
| Form Factor | Touch | Touch | |
| Height | 165.2 mm | 161.5 mm | LG K51S has greater height than Samsung Galaxy S21+ 5G. |
| Width | 76.7 mm | 75.6 mm | LG K51S has greater width than Samsung Galaxy S21+ 5G. |
| Depth | 8.26 mm | 7.8 mm | Samsung Galaxy S21+ 5G is narrower than LG K51S. |
| Weight | 194 g | 200 g | LG K51S is lighter than LG K51S. |
| Body Colour | Pink | Titan | Phantom black | Phantom silver | Phantom violet | Phantom gold | Phantom red | |
| Protection | - | Dustproof, splashproof, water-resistant | |
| Waterproof (Water-resistant) | - | Yes | Samsung Galaxy S21+ 5G is waterproof. |
| IP rating | - | IP68 | |
| SAR Value | 1.335 W/kg (body), 0.501 W/kg (head) | 1.335 W/kg (body), 0.541 W/kg (head), 2.23 W/kg (limb) | |
| 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 | Samsung Galaxy S21+ 5G |
|---|
| Display Type | LCD display | OLED display | |
|---|---|---|---|
| Display Technology | IPS | Infinity-O Dynamic AMOLED 2X | |
| Screen Size (Display Size) | 6.55" | 6.7" | Samsung Galaxy S21+ 5G has larger screen size than LG K51S. |
| Screen Resolution (Display Resolution) | 1600 x 720 pixels | 2400 x 1080 pixels | Samsung Galaxy S21+ 5G has better screen resolution than LG K51S. |
| Display Format | HD+ | Full HD+ | |
| Pixel Density | 268 ppi | 394 ppi | Samsung Galaxy S21+ 5G has better pixel density than LG K51S. |
| Aspect Ratio | 20:9 | - | |
| Max Brightness | 400 cd/m² | - | |
| Colour Depth | - | 16.7 million colours | |
| HDR | - | Yes | Samsung Galaxy S21+ 5G has HDR. |
| HDR Technology | - | HDR10+ | |
| Display Enhancement Technology | - | Eye Comfort Shield | |
| Display Refresh Rate | - | 120 Hz | |
| Display Features | Reading mode, FullVision display, night mode, hole in display | AOD(Always On Display) | |
| Display Protection (Screen Protector) | Tempered glass | Corning Gorilla Glass Victus (scratch resistant glass) |
| PROCESSOR | LG K51S | Samsung Galaxy S21+ 5G |
|---|
| Processor Type (CPU) | MediaTek | Samsung Exynos 2100 | |
|---|---|---|---|
| Processor Number | MT6765 | - | |
| Clock Speed | 2.3 GHz | 2.9 GHz | Samsung Galaxy S21+ 5G has higher clock speed than LG K51S. |
| 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 | Mali-G78 MP14 |
| MEMORY | LG K51S | Samsung Galaxy S21+ 5G |
|---|
| RAM | 3 GB | LPDDR5 SDRAM - 8 GB | Samsung Galaxy S21+ 5G has more RAM than LG K51S. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 64 GB | 128 GB | Samsung Galaxy S21+ 5G has more internal memory than LG K51S. |
| User Memory | 50.2 GB | 102.2 GB | |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 2 TB | - |
| CAMERA | LG K51S | Samsung Galaxy S21+ 5G |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 4 | 3 | |
|---|---|---|---|
| Sensor Resolution | 32 Megapixel | 12 Megapixel | LG K51S has better camera resolution than Samsung Galaxy S21+ 5G. |
| Lens Type | - | Ultra wide-angle lens | |
| Lens Aperture | F/1.8 | F/2.2 | LG K51S has better lens aperture than LG K51S. |
| Field of View (FoV) | 76.3 degree(s) | 120 degree(s) | Samsung Galaxy S21+ 5G has larger lens field of view than LG K51S. |
| Pixel Size | - | 1.4 μm | |
| Optical Image Stabiliser (OIS) | - | Optical Image Stabiliser (OIS) | Samsung Galaxy S21+ 5G has optical stabilisation. |
| Focus Adjustment | Automatic | Automatic | |
| Minimum Focal Length (Focal Distance) | 24 mm | - | |
| Optical Zoom | - | 3x | |
| Digital Zoom | 8x | 30x | Samsung Galaxy S21+ 5G has better digital zoom than LG K51S. |
| Self-Timer Delay | Yes | Yes | |
| Special Effects | HDR | Face retouch, Grid Line | |
| HDR Mode | - | Auto HDR mode | |
| Camera Modes | Burst mode, portrait mode, Flowers, Animals, Food, Person, Sunset, Sunrise, City, Landscape | Panorama, Slow motion mode, Pro mode, HYPERLAPSE, Super Slow-mo, Flowers, Greenery, Trees, Sky, Beaches, Watersides, Snow, Backlit, Text, Food, Face, Baby, Person, Dog, Cat, People, Sunset, Sunrise, City, Waterfall, Scenery, Stage, Vehicles, Drinks, Animal, Shoes, Indoor, Clothes, Night view, Night, Motion Photo, Mountain, Single Take, Pro Video, Director's View | |
| Face Recognition (Face ID) | Face detection | - | LG K51S has face detection. |
| White Balance | Automatic | - | |
| Light Source | LED flash | High CRI LED flash | |
| Video Resolutions | 1920 x 1080 (1080p) at 30 fps | 1920 x 1080 (1080p) at 60 fps, 1280 x 720 (720p) at 30 fps, 3840 x 2160 (4K) at 60 fps, Super slow motion video 1280 x 720 (720p) at 960 fps, Slo-mo video 1920 x 1080 (1080p) at 240 fps, 7680 x 4320 (UHD 8K) at 24fps, Hyperlapse 4K video support at 30 fps, Super Steady 1080p video support at 60 fps | |
| Camera Features (Functions) | Phase Detect Auto-Focus (PDAF), geotagging, Big Pixels technology, Quad Pixel technology | Playback zoom, blink detection, VDIS (Video Digital Image Stabilisation), Tracking AF, Video location tags, Scene Optimiser, Flaw detection, Shot suggestions, blur detection, HDR10+ recording, Super steady, Quick Measure, Zoom-In Mic, Space Zoom, Take 33MP still photos while playing 8K video, Hybrid Optic Zoom 3x, Super Resolution Zoom up to 30x, Digital zoom up to 12x for video |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | 5 Megapixel | 12 Megapixel | Samsung Galaxy S21+ 5G has better second camera resolution than LG K51S. |
|---|---|---|---|
| Sensor Size (2nd Camera) | - | 1/1.76" | |
| Lens Type (2nd Camera) | Super wide-angle lens | Wide-angle lens | |
| Lens Aperture (2nd Camera) | F/2.2 | F/1.8 | Samsung Galaxy S21+ 5G has better second camera lens aperture than LG K51S. |
| Field of View (2nd Camera) | 115 degree(s) | 79 degree(s) | LG K51S has larger second camera lens field of view than Samsung Galaxy S21+ 5G. |
| Pixel Size (2nd Camera) | - | 1.8 μm | |
| Minimum Focal Length (2nd Camera) | 16 mm | - | |
| Camera Features (2nd Camera) | - | OIS (Optical Image Stabilisation), Super Speed Dual Pixel AF |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | 2 Megapixel | 64 Megapixel | Samsung Galaxy S21+ 5G has higher resolution third camera than LG K51S. |
|---|---|---|---|
| Sensor Size (3rd Camera) | - | 1/1.72" | |
| Lens Type (3rd Camera) | - | Telephoto lens | |
| Lens Aperture (3rd Camera) | F/2.4 | F/2.0 | Samsung Galaxy S21+ 5G has better third camera lens aperture than LG K51S. |
| Field of View (3rd Camera) | 88.9 degree(s) | 76 degree(s) | LG K51S has larger third camera lens field of view than Samsung Galaxy S21+ 5G. |
| Pixel Size (3rd Camera) | - | 0.8 μm | |
| Camera Functions (3rd Camera) | Depth camera | - | |
| Camera Features (3rd Camera) | - | Phase Detect Auto-Focus (PDAF) |
| 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 | 10 Megapixel | LG K51S has better front camera resolution than Samsung Galaxy S21+ 5G. |
| Lens Aperture (Front) | - | F/2.2 | |
| Field of View (Front) | - | 80 degree(s) | |
| Pixel Size (Front) | - | 1.22 μm | |
| Focus Adjustment | - | Automatic | |
| Camera Modes (Front) | Gesture Shot, Selfie portrait | - | |
| Face Recognition (Face ID) | Face detection | - | LG K51S has face detection. |
| Camera Features (Front) | 17 filters | Dual Pixel AF |
| BATTERY AND CHARGING | LG K51S | Samsung Galaxy S21+ 5G |
|---|
| Battery Capacity (Battery Size) | 4000 mAh | 4800 mAh | Samsung Galaxy S21+ 5G has larger battery capacity than LG K51S. |
|---|---|---|---|
| Fast Charging Technology | - | Qualcomm Quick Charge 2.0, Adaptive Fast Charging, Samsung Super Fast Charging, Power Delivery 3.0 | Samsung Galaxy S21+ 5G has fast charging technology. |
| Wireless Charging | - | Yes | Samsung Galaxy S21+ 5G can be charged wirelessly. |
| Wireless Charging Standards | - | WPC, Qi, Fast Wireless Charging 2.0, Wireless PowerShare | |
| Standby Time | 100 hours | - | |
| Talk Time | 480 minutes | 2400 minutes | Samsung Galaxy S21+ 5G has longer battery life when making calls than LG K51S. |
| Run Time Details | Talk: up to 480 min Standby: up to 100 hrs |
Talk (4G): up to 2400 min Active online usage (LTE): up to 15 hrs Active online usage (Wi-Fi): up to 17 hrs Playback (wireless video): up to 22 hrs Playback (wireless audio): up to 75 hrs |
|
| Battery Technology | Lithium Ion | - |
| CELLULAR | LG K51S | Samsung Galaxy S21+ 5G |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 5G | Samsung Galaxy S21+ 5G has more advanced generation mobile network. |
| Operating System | Android 9.0 Pie | Android 11 | |
| User Interface | LG UX 9 | - | |
| Intelligent Assistant | Google Assistant | Bixby | |
| Payment Technology | - | Samsung Pay | |
| Navigation | GPS | GPS, GLONASS, BeiDou, Galileo |
| COMMUNICATIONS | LG K51S | Samsung Galaxy S21+ 5G |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE | FDD-LTE, TDD-LTE, 5G NR FR1 | |
|---|---|---|---|
| 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 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 17, Band 18, Band 19, Band 20, Band 25, Band 26, Band 28, Band 32, Band 38, Band 39, Band 40, Band 41, 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 700b, FDD 800 lower, FDD 800 upper, FDD 800 DD, FDD 1900+, FDD 850+, FDD 700 APT, FDD 1500 L, TDD 2600, TDD 1900, TDD 2300, TDD 2500, FDD 1700 - 2110 AWS-3 | |
| 5G NR Band | - | N1, n3, n5, n7, n8, n20, n28, n38, n41, n66, n77, n78, n40 | |
| 5G NR Frequency | - | FDD 2100, FDD 1800, FDD 850, FDD 2600, FDD 900, FDD 800, FDD 700APT, TDD TD 2600, TDD TD 2500, FDD AWS-3, TDD TD 3700, TDD TD 3500, TDD 2300 | |
| Wireless Interface | IEEE 802.11a/b/g/n | IEEE 802.11a/b/g/n/ac/ax | |
| 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 | Yes | Both phones have an NFC reader for mobile payments. |
| Messaging Services | SMS, MMS | - |
| MEDIA | LG K51S | Samsung Galaxy S21+ 5G |
|---|
| Supported Digital Audio Standards | WMA, AAC, PCM, MP3, FLAC, AAC +, eAAC+, OPUS, AMR-WB, AMR-NB, Vorbis | WAV, WMA, AAC, PCM, AMR, MP3, FLAC, XMF, OGG, MIDI, APE (Monkey's Audio), M4A, DSF, DSD, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, DFF, MID, DSD64, DSD128 | |
|---|---|---|---|
| Supported Digital Video Standards | MKV, FLV, AVI, WMV, ASF, 3GP, TS, WebM, OGM, MP4 | MKV, FLV, AVI, WMV, ASF, 3GP, M4V, WebM, 3G2, MP4 | |
| Sound Enhancements | DTS: X 3D Surround Sound | Dolby Digital Plus sound, Dolby Atmos sound technology, Surround sound, stereo speakers tuned by AKG, Dolby Digital sound |
| FEATURES | LG K51S | Samsung Galaxy S21+ 5G |
|---|
| 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 | Accelerometer, ambient light sensor, proximity sensor, barometer, gyro sensor, hall sensor, geomagnetic sensor | |
| Security Devices | Fingerprint reader | Fingerprint reader (under display), face recognition | |
| 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 | Air View, MIMO technology, Smart Select, Samsung KNOX, Smart View, Live message, Screen off memo, Bixby Vision, Dual Audio, Bixby Routines, Intelligent Performance Enhancer, AR Doodle, PENUP, Bixby key, Samsung Knox Vault, Private Share function, Enhanced Game Booster |
| OTHERS | LG K51S | Samsung Galaxy S21+ 5G |
|---|
| Included Accessories | Power adapter, SIM card removal tool, USB-C cable | SIM card removal tool, USB-C to USB-C cable | |
|---|---|---|---|
| Compliant Standards | MIL-STD 810G | IP68, HAC (Hearing Aid Compatible) | |
| Max Depth of Water Resistance | - | 1.5 m |
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