Samsung Galaxy A51 vs. Realme 9i

Phone Comparison, Reviews and Tests

Side by side comparison and review of Samsung Galaxy A51 and Realme 9i. 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. Realme 9i Comparison Chart
DESIGN AND DIMENSIONS Samsung Galaxy A51 Realme 9i
Product Type Smartphone Smartphone
Manufacturer Model Number SM-A515F/DSN -
Form Factor Touch Touch
Height 158.5 mm 164.4 mm Realme 9i has greater height than Samsung Galaxy A51.
Width 73.6 mm 75.7 mm Realme 9i has greater width than Samsung Galaxy A51.
Depth 7.9 mm 8.4 mm Samsung Galaxy A51 is narrower than Samsung Galaxy A51.
Weight 172 g 190 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 Prism black | Prism blue
Waterproof (Water-resistant) - -
SAR Value 0.369 W/kg (head), 1.59 W/kg (body), 2.93 W/kg (limb) 1.02 W/kg (body), 2.072 W/kg (limb), 0.788 W/kg (head)
Connector Type USB Type-C - 24 pin USB-C
Headset jack - mini-phone 3.5mm
USB Type-C - 24 pin USB-C
SIM Card Type (Size) Nano SIM Nano SIM
SIM Card Qty Dual-SIM Dual-SIM
DISPLAY Samsung Galaxy A51 Realme 9i
Display Type OLED display -
Display Technology Super AMOLED -
Screen Size (Display Size) 6.5" 6.6" Realme 9i has larger screen size than Samsung Galaxy A51.
Screen Resolution (Display Resolution) 2400 x 1080 pixels 2412 x 1080 pixels Realme 9i has better screen resolution than Samsung Galaxy A51.
Display Format Full HD+ Full HD+
Pixel Density 408 ppi 401 ppi Samsung Galaxy A51 has better pixel density than Realme 9i.
Max Brightness - 480 cd/m²
Colour Depth 16.7 million colours -
Display Enhancement Technology - Ultra-Smooth
Display Refresh Rate - 90 Hz
Touch Sampling Rate - 180 Hz
Display Features Edge-to-Edge screen, Infinity O display 5-level fresh rates
Display Protection (Screen Protector) - Dragontrail PRO (scratch resistant glass)
PROCESSOR Samsung Galaxy A51 Realme 9i
Processor Type (CPU) Samsung Exynos 9611 Qualcomm Snapdragon 680
Clock Speed 2.3 GHz 2.4 GHz Realme 9i 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 Realme 9i
RAM 4 GB LPDDR4X SDRAM - 4 GB + up to 11 GB virtual extension 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 2.1
Supported Flash Memory Cards (Expandable Memory) microSDHC, microSDXC - up to 512 GB microSDHC, microSD, microSDXC - up to 1 TB
CAMERA Samsung Galaxy A51 Realme 9i
MAIN CAMERA
Number of Main Cameras 4 3
Sensor Resolution 48 Megapixel 50 Megapixel Realme 9i has better camera resolution than Samsung Galaxy A51.
Lens Aperture F/2.0 F/1.8 Realme 9i has better lens aperture than Samsung Galaxy A51.
Lens Construction - 5-element
Focus Adjustment Automatic Automatic
Digital Zoom 8x -
Special Effects - HDR
Camera Modes Slow motion mode, Live Focus mode Panorama, Slow motion mode, night mode, Expert Mode, portrait mode, Timelapse video, Ultra Macro Mode, 50MP mode, Super Text, Digital Zoom 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, 1280 x 720 (720p) at 30 fps, 1280 x 720 (720p) at 120 fps
Camera Features (Functions) AR sticker, background blur, Scene Optimiser, Eye blink, Flaw detection, Stamp, Facial blur Phase Detect Auto-Focus (PDAF), AI Triple camera
SECOND CAMERA
Sensor Resolution (2nd Camera) 12 Megapixel 2 Megapixel Samsung Galaxy A51 has better second camera resolution than Realme 9i.
Lens Type (2nd Camera) Ultra wide-angle lens -
Lens Aperture (2nd Camera) F/2.2 F/2.4 Samsung Galaxy A51 has better second camera lens aperture than Samsung Galaxy A51.
Field of View (2nd Camera) 123 degree(s) -
Camera Functions (2nd Camera) - Macro camera
Camera Features (2nd Camera) - 4cm macro photography
THIRD CAMERA
Sensor Resolution (3rd Camera) 5 Megapixel 2 Megapixel Samsung Galaxy A51 has higher resolution third camera than Realme 9i.
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 B&W lens
FOURTH CAMERA
Sensor Resolution (4th Camera) 5 Megapixel -
Lens Type (4th Camera) Telephoto lens -
Lens Aperture (4th Camera) F/2.2 -
Camera Functions (4th Camera) Depth camera -
FRONT CAMERA
Number of Front Cameras 1 1
Sensor Resolution (Front) 32 Megapixel 16 Megapixel Samsung Galaxy A51 has better front camera resolution than Realme 9i.
Lens Aperture (Front) F/2.2 F/2.1 Realme 9i has better front lens aperture than Samsung Galaxy A51.
Lens Element Qty (Front) - 5-element
Focus Adjustment Focus free -
Special Effects (Front) - HDR
Camera Modes (Front) - Panorama, Time-lapse mode, night mode, portrait mode, AI Beauty
Video Resolutions (Front) - 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps
BATTERY AND CHARGING Samsung Galaxy A51 Realme 9i
Battery Capacity (Battery Size) 4000 mAh 5000 mAh Realme 9i has larger battery capacity than Samsung Galaxy A51.
Fast Charging Technology - Dart Charge Realme 9i has fast charging technology.
Standby Time - 995 hours
Talk Time 1920 minutes 2904 minutes Realme 9i 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
Standby: up to 995 hrs
Talk: up to 2904 min
WhatsApp: up to 20.7 hrs
Playback (Music): up to 116.3 hrs
Battery Technology Lithium Ion -
CELLULAR Samsung Galaxy A51 Realme 9i
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 Realme UI 2.0
Intelligent Assistant Bixby -
Navigation GPS, GLONASS, BeiDou, Galileo GPS, GLONASS, BeiDou, Galileo
COMMUNICATIONS Samsung Galaxy A51 Realme 9i
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 5, Band 8
3G UMTS Frequency 2100, 1900, 1700, 850, 900 2100, 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 3, 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 1800+, 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 5.0
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 Realme 9i
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 -
FEATURES Samsung Galaxy A51 Realme 9i
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, proximity sensor, magnetometer, light sensor
Security Devices Fingerprint reader (under display) Fingerprint reader (side)
Additional Phone Features Fast Charging, Samsung KNOX, Bixby Vision, Game Booster, Bixby Routines Dual microphones, Fast Charging, Super power saving mode, dual stereo speakers
OTHERS Samsung Galaxy A51 Realme 9i
Included Accessories Power adapter Screen protection film, SIM card removal tool, USB-C cable, protective case, 33W charger
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