Samsung Galaxy A51 vs. Xiaomi POCO X3 NFC

Phone Comparison, Reviews and Tests

Side by side comparison and review of Samsung Galaxy A51 and Xiaomi POCO X3 NFC. 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 A51 vs. Xiaomi POCO X3 NFC Comparison Chart
DESIGN AND DIMENSIONS Samsung Galaxy A51 Xiaomi POCO X3 NFC
Product Type Smartphone Smartphone
Manufacturer Model Number SM-A515F/DSN -
Form Factor Touch Touch
Height 158.5 mm 165.3 mm Xiaomi POCO X3 NFC has greater height than Samsung Galaxy A51.
Width 73.6 mm 76.8 mm Xiaomi POCO X3 NFC has greater width than Samsung Galaxy A51.
Depth 7.9 mm 9.4 mm Samsung Galaxy A51 is narrower than Samsung Galaxy A51.
Weight 172 g 215 g Samsung Galaxy A51 is lighter than Samsung Galaxy A51.
Body Colour Silver | Prism crush black | Haze crush silver | Prism crush blue | Prism crush white Cobalt blue | Shadow grey
Protection - Splashproof
Waterproof (Water-resistant) - -
IP rating - IP53
SAR Value 0.369 W/kg (head), 1.59 W/kg (body), 2.93 W/kg (limb) 0.558 W/kg (head), 0.986 W/kg (body), 1.997 W/kg (limb)
Connector Type USB Type-C - 24 pin USB-C
Headset jack - mini-phone 3.5mm
USB Type-C - 24 pin USB-C
Headset jack - mini-phone 3.5mm
SIM Card Type (Size) Nano SIM Nano SIM
SIM Card Qty Dual-SIM Dual-SIM
SIM Card Configuration Details - Nano SIM + nano SIM/microSD
DISPLAY Samsung Galaxy A51 Xiaomi POCO X3 NFC
Display Type OLED display -
Display Technology Super AMOLED -
Screen Size (Display Size) 6.5" 6.67" Xiaomi POCO X3 NFC has larger screen size than Samsung Galaxy A51.
Screen Resolution (Display Resolution) 2400 x 1080 pixels 2400 x 1080 pixels Both phones have the same screen resolution.
Display Format Full HD+ Full HD+
Pixel Density 408 ppi 395 ppi Samsung Galaxy A51 has better pixel density than Xiaomi POCO X3 NFC.
Aspect Ratio - 20:9
Colour Depth 16.7 million colours -
Contrast Ratio - 1500:1
HDR - Yes Xiaomi POCO X3 NFC has HDR.
HDR Technology - HDR10
Display Refresh Rate - 120 Hz
Touch Sampling Rate - 240 Hz
Display Features Edge-to-Edge screen, Infinity O display Dark mode, Dot Display
Display Protection (Screen Protector) - Corning Gorilla Glass 5 (scratch resistant glass)
PROCESSOR Samsung Galaxy A51 Xiaomi POCO X3 NFC
Processor Type (CPU) Samsung Exynos 9611 Qualcomm Snapdragon 732G
Clock Speed 2.3 GHz 2.3 GHz Both phones have the same clock speed.
Processor Core Qty 8-core 8-core Both phones have the same number of phone cores.
64-bit Architecture Yes Yes Both phones have 64-bit architecture.
Graphics System (GPU) - Qualcomm ADRENO 618
MEMORY Samsung Galaxy A51 Xiaomi POCO X3 NFC
RAM 4 GB LPDDR4X SDRAM - 6 GB Xiaomi POCO X3 NFC has more RAM than Samsung Galaxy A51.
Internal Memory Size (Storage Capacity) 128 GB 64 GB Samsung Galaxy A51 has more internal memory than Xiaomi POCO X3 NFC.
User Memory 107 GB -
Memory Interface - UFS 2.1
Supported Flash Memory Cards (Expandable Memory) microSDHC, microSDXC - up to 512 GB microSDHC, microSDXC - up to 256 GB
CAMERA Samsung Galaxy A51 Xiaomi POCO X3 NFC
MAIN CAMERA
Number of Main Cameras 4 4
Sensor Resolution 48 Megapixel 64 Megapixel Xiaomi POCO X3 NFC has better camera resolution than Samsung Galaxy A51.
Sensor Size - 1/1.73"
Sensor Name - Sony Exmor RS IMX682 sensor
Lens Aperture F/2.0 F/1.89 Xiaomi POCO X3 NFC has better lens aperture than Samsung Galaxy A51.
Pixel Size - 1.6 μm
Focus Adjustment Automatic Automatic
Digital Zoom 8x -
Special Effects - Kaleidoscope
Camera Modes Slow motion mode, Live Focus mode Pro mode, night mode, SteadyShot, AI portrait mode, AI Beautify, Pro Video mode, Macro video, Movie frame, photo filters, AI SkyScaping 3.0, AI photo clones, Timed burst, Document mode 2.0
Light Source LED flash LED flash
Video Resolutions Slo-mo video 1280 x 720 (720p) at 240 fps, 3840 x 2160 (4K) at 30 fps 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps, Slo-mo video 1920 x 1080 (1080p) at 120 fps, Slo-mo video 1280 x 720 (720p) at 240 fps, 3840 x 2160 (4K) at 30 fps, Slo-mo video 1280 x 720 (720p) at 120 fps, Slo-mo video 1280 x 720 (720p) at 960 fps
Camera Features (Functions) AR sticker, background blur, Scene Optimiser, Eye blink, Flaw detection, Stamp, Facial blur 4-in-1 Super Pixel, AI scene detection, AI Quad camera, Support LOG format, 6 long exposure modes, AI dynamic studio
SECOND CAMERA
Sensor Resolution (2nd Camera) 12 Megapixel 13 Megapixel Xiaomi POCO X3 NFC has better second camera resolution than Samsung Galaxy A51.
Lens Type (2nd Camera) Ultra wide-angle lens Ultra 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) 119 degree(s) Samsung Galaxy A51 has larger second camera lens field of view than Xiaomi POCO X3 NFC.
THIRD CAMERA
Sensor Resolution (3rd Camera) 5 Megapixel 2 Megapixel Samsung Galaxy A51 has higher resolution third camera than Xiaomi POCO X3 NFC.
Lens Aperture (3rd Camera) F/2.4 F/2.4 Both phones have the same lens aperture of the third camera.
Pixel Size (3rd Camera) - 1.75 μm
Camera Functions (3rd Camera) Macro camera Macro camera
Camera Features (3rd Camera) - FF (4cm)
FOURTH CAMERA
Sensor Resolution (4th Camera) 5 Megapixel 2 Megapixel Samsung Galaxy A51 has higher resolution fourth camera than Xiaomi POCO X3 NFC.
Lens Type (4th Camera) Telephoto lens -
Lens Aperture (4th Camera) F/2.2 F/2.4 Samsung Galaxy A51 has better fourth camera lens aperture than Samsung Galaxy A51.
Pixel Size (4th Camera) - 1.75 μm
Camera Functions (4th Camera) Depth camera Depth camera
FRONT CAMERA
Number of Front Cameras 1 1
Sensor Resolution (Front) 32 Megapixel 20 Megapixel Samsung Galaxy A51 has better front camera resolution than Xiaomi POCO X3 NFC.
Lens Aperture (Front) F/2.2 F/2.2 Both phones have the same front camera lens aperture.
Pixel Size (Front) - 1.6 μm
Focus Adjustment Focus free -
Special Effects (Front) - HDR
Camera Modes (Front) - Selfie panorama, portrait mode, AI Beautify, Short video mode
Light Source (Front) - Display flash
Camera Features (Front) - Self-timer, 4-in-1 Super Pixel technology, AI scene detection, AI studio lighting, Palm shutter, full screen frame, Short video filter
BATTERY AND CHARGING Samsung Galaxy A51 Xiaomi POCO X3 NFC
Battery Capacity (Battery Size) 4000 mAh 5160 mAh Xiaomi POCO X3 NFC has larger battery capacity than Samsung Galaxy A51.
Talk Time 1920 minutes -
Run Time Details Active online usage (LTE): up to 15 hrs
Active online usage (Wi-Fi): up to 16 hrs
Playback (video): up to 20 hrs
Playback (audio): up to 87 hrs
Talk (4G): up to 1920 min
Playback (video): up to 17 hrs
Gaming: up to 10 hrs
Playback (Music): up to 153 hrs
Battery Technology Lithium Ion -
CELLULAR Samsung Galaxy A51 Xiaomi POCO X3 NFC
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 10
User Interface One UI POCO Launcher 2.0 (MIUI12)
Intelligent Assistant Bixby -
Payment Technology - Google Pay
Navigation GPS, GLONASS, BeiDou, Galileo GPS, A-GPS, GLONASS, BeiDou
COMMUNICATIONS Samsung Galaxy A51 Xiaomi POCO X3 NFC
Data Transmission GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE GPRS, EDGE, HSDPA, HSUPA, HSPA+, VoLTE, FDD-LTE, TDD-LTE
2G Band 850 GSM, 900 GSM, 1800 GSM, 1900 GSM -
3G UMTS Band Band 1, Band 2, Band 4, Band 5, Band 8 Band 1, Band 2, Band 4, Band 5, Band 8
3G UMTS Frequency 2100, 1900, 1700, 850, 900 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 26, Band 28, Band 38, Band 40, Band 41, Band 66 Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 20, Band 28, Band 38, Band 40, Band 41
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 850+, FDD 700 APT, TDD 2600, TDD 2300, TDD 2500, FDD 1700 - 2110 AWS-3 FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 800 DD, FDD 700 APT, TDD 2600, TDD 2300, TDD 2500
Wireless Interface IEEE 802.11a/b/g/n/ac, ANT+ Wi-Fi
Bluetooth Bluetooth 5.0 LE Bluetooth 5.1
Bluetooth Profiles HFP, HSP, OPP, PAN, A2DP, AVRCP, HID, SAP, PBAP, MAP, HOGP -
NFC Yes Yes Both phones have an NFC reader for mobile payments.
Messaging Services SMS, MMS SMS, MMS
MEDIA Samsung Galaxy A51 Xiaomi POCO X3 NFC
Supported Digital Audio Standards WAV, WMA, AAC, AMR, MP3, FLAC, XMF, OGG, MIDI, M4A, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, MID WAV, WMA, AAC, AMR, MP3, FLAC, OGG, APE (Monkey's Audio), M4A, DSF, AWB
Supported Digital Video Standards MKV, FLV, AVI, WMV, ASF, 3GP, M4V, WebM, 3G2, MP4 MKV, AVI, WMV, ASF, 3GP, M4V, WebM, 3G2, MP4
Sound Enhancements - Hi-Res audio
FEATURES Samsung Galaxy A51 Xiaomi POCO X3 NFC
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, gyro sensor
Security Devices Fingerprint reader (under display) Face recognition, fingerprint reader (side)
Additional Phone Features Fast Charging, Samsung KNOX, Bixby Vision, Game Booster, Bixby Routines Infrared remote control, MIMO technology, AI face unlock, Google Lens, linear motor, Qualcomm 4th generation AI Engine, LiquidCool Technology 1.0 Plus, GAME Turbo 3.0
OTHERS Samsung Galaxy A51 Xiaomi POCO X3 NFC
Included Accessories Power adapter SIM card removal tool, USB-C cable, 33W charger, anti-bacterial case, anti-bacterial screen protector
Compliant Standards - IP53, TUV Rheinland Low Blue Light Certification
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