Samsung Galaxy A51 vs. Xiaomi Redmi Note 11

Phone Comparison, Reviews and Tests

Side by side comparison and review of Samsung Galaxy A51 and Xiaomi Redmi Note 11. 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 Redmi Note 11 Comparison Chart
DESIGN AND DIMENSIONS Samsung Galaxy A51 Xiaomi Redmi Note 11
Product Type Smartphone Smartphone
Manufacturer Model Number SM-A515F/DSN -
Form Factor Touch Touch
Height 158.5 mm 159.87 mm Xiaomi Redmi Note 11 has greater height than Samsung Galaxy A51.
Width 73.6 mm 73.87 mm Xiaomi Redmi Note 11 has greater width than Samsung Galaxy A51.
Depth 7.9 mm 8.09 mm Samsung Galaxy A51 is narrower than Samsung Galaxy A51.
Weight 172 g 179 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 Twilight blue | Blue star | Graphite grey
Protection - Dustproof, splashproof
Waterproof (Water-resistant) - -
IP rating - IP53
SAR Value 0.369 W/kg (head), 1.59 W/kg (body), 2.93 W/kg (limb) 0.989 W/kg (body), 0.596 W/kg (head), 1.996 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 -
SIM Card Qty Dual-SIM Dual-SIM
DISPLAY Samsung Galaxy A51 Xiaomi Redmi Note 11
Display Type OLED display OLED display
Display Technology Super AMOLED AMOLED
Screen Size (Display Size) 6.5" 6.43" Samsung Galaxy A51 has larger screen size than Xiaomi Redmi Note 11.
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 409 ppi Xiaomi Redmi Note 11 has better pixel density than Samsung Galaxy A51.
Max Brightness - 1000 cd/m²
Colour Depth 16.7 million colours -
Contrast Ratio - 4500000:1
Display Enhancement Technology - Sunlight mode, Reading mode 3.0
Display Refresh Rate - 90 Hz
Touch Sampling Rate - 180 Hz
Display Features Edge-to-Edge screen, Infinity O display DCI-P3 Wide colour gamut, Dot Display
PROCESSOR Samsung Galaxy A51 Xiaomi Redmi Note 11
Processor Type (CPU) Samsung Exynos 9611 Qualcomm Snapdragon 680
Clock Speed 2.3 GHz 2.4 GHz Xiaomi Redmi Note 11 has higher clock speed than Samsung Galaxy A51.
Processor Core Qty 8-core 8-core Both phones have the same number of phone cores.
64-bit Architecture Yes - Samsung Galaxy A51 has 64-bit architecture.
Graphics System (GPU) - Qualcomm ADRENO 610
MEMORY Samsung Galaxy A51 Xiaomi Redmi Note 11
RAM 4 GB LPDDR4X SDRAM - 4 GB Both phones have the same RAM size.
Internal Memory Size (Storage Capacity) 128 GB 128 GB Both phones have the same internal memory capacity.
User Memory 107 GB -
Memory Interface - UFS 2.2
Supported Flash Memory Cards (Expandable Memory) microSDHC, microSDXC - up to 512 GB microSDHC, microSD, microSDXC - up to 1 TB
CAMERA Samsung Galaxy A51 Xiaomi Redmi Note 11
MAIN CAMERA
Number of Main Cameras 4 4
Sensor Resolution 48 Megapixel 50 Megapixel Xiaomi Redmi Note 11 has better camera resolution than Samsung Galaxy A51.
Lens Aperture F/2.0 F/1.8 Xiaomi Redmi Note 11 has better lens aperture than Samsung Galaxy A51.
Focus Adjustment Automatic Automatic
Digital Zoom 8x -
Camera Modes Slow motion mode, Live Focus mode -
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, 3840 x 2160 (4K) at 30 fps
Camera Features (Functions) AR sticker, background blur, Scene Optimiser, Eye blink, Flaw detection, Stamp, Facial blur AI Quad camera
SECOND CAMERA
Sensor Resolution (2nd Camera) 12 Megapixel 8 Megapixel Samsung Galaxy A51 has better second camera resolution than Xiaomi Redmi Note 11.
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) 118 degree(s) Samsung Galaxy A51 has larger second camera lens field of view than Xiaomi Redmi Note 11.
THIRD CAMERA
Sensor Resolution (3rd Camera) 5 Megapixel 2 Megapixel Samsung Galaxy A51 has higher resolution third camera than Xiaomi Redmi Note 11.
Lens Aperture (3rd Camera) F/2.4 F/2.4 Both phones have the same lens aperture of the third camera.
Camera Functions (3rd Camera) Macro camera Macro camera
FOURTH CAMERA
Sensor Resolution (4th Camera) 5 Megapixel 2 Megapixel Samsung Galaxy A51 has higher resolution fourth camera than Xiaomi Redmi Note 11.
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.
Camera Functions (4th Camera) Depth camera Depth camera
FRONT CAMERA
Number of Front Cameras 1 1
Sensor Resolution (Front) 32 Megapixel 13 Megapixel Samsung Galaxy A51 has better front camera resolution than Xiaomi Redmi Note 11.
Lens Aperture (Front) F/2.2 F/2.4 Samsung Galaxy A51 has better front lens aperture than Samsung Galaxy A51.
Focus Adjustment Focus free -
Video Resolutions (Front) - 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps
BATTERY AND CHARGING Samsung Galaxy A51 Xiaomi Redmi Note 11
Battery Capacity (Battery Size) 4000 mAh 5000 mAh Xiaomi Redmi Note 11 has larger battery capacity than Samsung Galaxy A51.
Fast Charging Technology - Pro fast charging Xiaomi Redmi Note 11 has fast charging technology.
Talk Time 1920 minutes 2580 minutes Xiaomi Redmi Note 11 has longer battery life when making calls than Samsung Galaxy A51.
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
Talk: up to 2580 min
Playback (video): up to 22 hrs
Playback (audio): up to 215 hrs
Battery Technology Lithium Ion -
CELLULAR Samsung Galaxy A51 Xiaomi Redmi Note 11
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 11
User Interface One UI MIUI 13
Intelligent Assistant Bixby -
Navigation GPS, GLONASS, BeiDou, Galileo GPS, GLONASS, BeiDou, Galileo
COMMUNICATIONS Samsung Galaxy A51 Xiaomi Redmi Note 11
Data Transmission GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE 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 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 32, 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, FDD 1500 L, TDD 2600, TDD 2300, TDD 2500
Wireless Interface IEEE 802.11a/b/g/n/ac, ANT+ IEEE 802.11a/b/g/n/ac
Bluetooth Bluetooth 5.0 LE Bluetooth 5.0
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 -
MEDIA Samsung Galaxy A51 Xiaomi Redmi Note 11
Supported Digital Audio Standards WAV, WMA, AAC, AMR, MP3, FLAC, XMF, OGG, MIDI, M4A, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, MID -
Supported Digital Video Standards MKV, FLV, AVI, WMV, ASF, 3GP, M4V, WebM, 3G2, MP4 -
Sound Enhancements - Hi-Res audio certified
FEATURES Samsung Galaxy A51 Xiaomi Redmi Note 11
Phone Functions 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, gyroscope
Security Devices Fingerprint reader (under display) Face recognition, fingerprint reader (side)
Security Technology - AI face unlock
Additional Phone Features Fast Charging, Samsung KNOX, Bixby Vision, Game Booster, Bixby Routines Z-axis linear vibration motor, dual stereo speakers, IR blaster, write booster
OTHERS Samsung Galaxy A51 Xiaomi Redmi Note 11
Included Accessories Power adapter Power adapter, SIM card removal tool, USB-C cable, protective case
Compliant Standards - IP53, TUV SUD, SGS, IEC 60529
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