Samsung Galaxy Note9 vs. Realme C21

Phone Comparison, Reviews and Tests

In depth comparison and review of Samsung Galaxy Note9 and Realme C21. 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.

Phone Specifications Comparison

Samsung Galaxy Note9 vs. Realme C21 Comparison Chart
DESIGN AND DIMENSIONS Samsung Galaxy Note9 Realme C21
Product Type Smartphone Smartphone
Manufacturer Model Number SM-N960F/DS -
Form Factor Touch Touch
Height 161.9 mm 165.2 mm Realme C21 has greater height than Samsung Galaxy Note9.
Width 76.4 mm 76.4 mm Both phones are the same width
Depth 8.8 mm 8.9 mm Samsung Galaxy Note9 is narrower than Samsung Galaxy Note9.
Weight 201 g 190 g Realme C21 is lighter than Samsung Galaxy Note9.
Body Colour Cobalt blue | Metallic copper | Deep black | Ocean blue | Midnight black | Lavender purple Cross black | Cross blue
Protection Dustproof, splashproof, waterproof -
Waterproof (Water-resistant) Yes - Samsung Galaxy Note9 is waterproof.
IP rating IP68 -
SAR Value 1.509 W/kg (body), 0.381 W/kg (head), 2.24 W/kg (limb) -
Integrated Components Heart rate sensor -
Connector Type USB Type-C - 24 pin USB-C
Headset jack - mini-phone 3.5mm
Micro-USB
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 Note9 Realme C21
Display Type OLED display LCD display
Display Technology Quad HD+ Super AMOLED LCD
Screen Size (Display Size) 6.4" 6.5" Realme C21 has larger screen size than Samsung Galaxy Note9.
Screen Resolution (Display Resolution) 2960 x 1440 pixels 1600 x 720 pixels Samsung Galaxy Note9 has better screen resolution than Realme C21.
Display Format QHD+ HD+
Pixel Density 516 ppi -
Aspect Ratio - 20:9
Max Brightness - 420 cd/m²
Colour Depth 16.7 million colours -
Display Features Always-on display, Edge Screen, Infinity Display, Edge-to-Edge screen Mini-drop display
PROCESSOR Samsung Galaxy Note9 Realme C21
Processor Type (CPU) Samsung Exynos 9 MediaTek Helio G35
Processor Number 9810 -
Clock Speed 2.7 GHz 2.3 GHz Samsung Galaxy Note9 has higher clock speed than Realme C21.
Processor Core Qty 8-core 8-core Both phones have the same number of phone cores.
64-bit Architecture Yes - Samsung Galaxy Note9 has 64-bit architecture.
Graphics System (GPU) Mali-G72 MP18 PowerVR GE8320
MEMORY Samsung Galaxy Note9 Realme C21
RAM LPDDR4 SDRAM - 6 GB LPDDR4X SDRAM - 3 GB Samsung Galaxy Note9 has more RAM than Realme C21.
Internal Memory Size (Storage Capacity) 128 GB 32 GB Samsung Galaxy Note9 has more internal memory than Realme C21.
User Memory 108.9 GB -
Supported Flash Memory Cards (Expandable Memory) microSDHC, microSDXC - up to 512 GB microSD
CAMERA Samsung Galaxy Note9 Realme C21
MAIN CAMERA
Number of Main Cameras 2 3
Sensor Resolution 12 Megapixel 13 Megapixel Realme C21 has better camera resolution than Samsung Galaxy Note9.
Sensor Size 1/2.55" -
Lens Type Wide-angle lens -
Lens Aperture F/1.5 & f/2.4 F/2.2 Samsung Galaxy Note9 has better lens aperture than Samsung Galaxy Note9.
Lens Construction - 5-element
Optical Image Stabiliser (OIS) Dual OIS (Optical Image Stabilisation) - Samsung Galaxy Note9 has optical stabilisation.
Focus Adjustment Automatic Automatic
Optical Zoom 2x -
Digital Zoom 10x 4x Samsung Galaxy Note9 has better digital zoom than Realme C21.
Special Effects HDR, Bokeh effect, Grid Line HDR
Camera Modes Panorama, Pro mode, Timer mode, HYPERLAPSE, Auto mode, Food mode, Super Slow-mo, AR Emoji, Portraits, Flowers, Indoor scenes, Animals, Landscapes, Greenery, Trees, Sky, Mountains, Beaches, Sunrises and sunsets, Watersides, Street scenes, Night scenes, Waterfalls, Snow, Birds, Backlit, Text, Disney AR Emoji Panorama, Time-lapse mode, Slow motion mode, Beauty mode, Expert Mode, Nightscape capture mode, Portrait, Filter mode, Super nightscape
Face Recognition (Face ID) Face detection - Samsung Galaxy Note9 has face detection.
Light Source LED flash 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 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, 2560 x 1440 (QHD) at 30 fps 1920 x 1080 (1080p) at 30 fps
Camera Features (Functions) Quick Launch, Playback zoom, Motion photo, VDIS (Video Digital Image Stabilisation), Live Focus, Dual Capture, High CRI LED flash, Tracking AF, Video location tags, Stamps, location tags, Continuous autofocus video, Hyperlapse video support 1080p, Live focus with bokeh filters, Super Speed Dual Pixel, background blur, Scene Optimiser, Eye blink, Motion blur, Lens smudge, Backlit, Full view, Flaw detection, 9.1MP still photos recording 4K video Phase Detect Auto-Focus (PDAF), AI Triple camera, Chroma boost
SECOND CAMERA
Sensor Resolution (2nd Camera) 12 Megapixel 2 Megapixel Samsung Galaxy Note9 has better second camera resolution than Realme C21.
Sensor Size (2nd Camera) 1/3.4" -
Lens Type (2nd Camera) Telephoto lens -
Lens Aperture (2nd Camera) F/2.4 F/2.4 Both phones have the same second camera lens aperture.
Lens Element Qty (2nd Camera) - 3-element
Camera Functions (2nd Camera) - B&W lens
THIRD CAMERA
Sensor Resolution (3rd Camera) - 2 Megapixel
Lens Aperture (3rd Camera) - F/2.4
Lens Element Qty (3rd Camera) - 3-element
Camera Functions (3rd Camera) - Macro camera
Camera Features (3rd Camera) - 4cm macro photography
FRONT CAMERA
Number of Front Cameras 1 1
Sensor Resolution (Front) 8 Megapixel 5 Megapixel Samsung Galaxy Note9 has better front camera resolution than Realme C21.
Sensor Size (Front) 1/3.6" -
Lens Type (Front) Wide-angle lens -
Lens Aperture (Front) F/1.7 F/2.2 Samsung Galaxy Note9 has better front lens aperture than Samsung Galaxy Note9.
Lens Element Qty (Front) - 3-element
Focus Adjustment Automatic -
Special Effects (Front) HDR, Grid Line HDR
Camera Modes (Front) Timer mode, wide selfie mode, selfie mode, AR Emoji, selfie focus Time-lapse mode, Beauty mode, portrait mode, AI Beauty, Filter mode, Panoramic mode
Face Recognition (Face ID) - Face recognition Realme C21 has face detection.
Camera Features (Front) Quick launch, Motion photo, Stamps, location tags, VDIS (Video Digital Image Stabilization), Full view, Flaw detection -
BATTERY AND CHARGING Samsung Galaxy Note9 Realme C21
Battery Capacity (Battery Size) 4000 mAh 5000 mAh Realme C21 has larger battery capacity than Samsung Galaxy Note9.
Wireless Charging Yes - Samsung Galaxy Note9 can be charged wirelessly.
Wireless Charging Standards WPC, PMA -
Talk Time 1740 minutes -
Run Time Details Talk (3G): up to 1740 min
Active online usage (3G): up to 14 hrs
Active online usage (4G): up to 16 hrs
Active online usage (Wi-Fi): up to 17 hrs
Playback (audio): up to 59 hrs
Playback (audio (Always On Display Off)): up to 95 hrs
Playback (video): up to 20 hrs
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CELLULAR Samsung Galaxy Note9 Realme C21
Technology TD-SCDMA / WCDMA (UMTS) / GSM WCDMA (UMTS) / GSM
Mobile Broadband Generation 4G 4G Both phones have the same mobile network generation.
Operating System Android 8.1 Oreo Android 10
User Interface - Realme UI
Intelligent Assistant Bixby -
Payment Technology Samsung Pay -
Navigation GPS, GLONASS, BeiDou, Galileo GPS, A-GPS, GLONASS, BeiDou
COMMUNICATIONS Samsung Galaxy Note9 Realme C21
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 18, Band 19, Band 20, Band 25, Band 26, Band 28, Band 32, Band 38, Band 39, 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 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 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+/ANT IEEE 802.11b/g/n
Bluetooth Bluetooth 5.0 LE Bluetooth 5.0
NFC Yes - Samsung Galaxy Note9 has NFC reader for mobile payments.
Messaging Services SMS, MMS -
MEDIA Samsung Galaxy Note9 Realme C21
Supported Digital Audio Standards WAV, WMA, AAC, PCM, AMR, MP3, FLAC, XMF, OGG, MIDI, APE (Monkey's Audio), M4A, apt-X, DSF, DSD, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, DFF, MID, DSD64, DSD128 -
Supported Digital Video Standards MKV, FLV, AVI, MPEG-4, WMV, ASF, 3GP, M4V, WebM, 3G2 -
Sound Enhancements Dolby Digital Plus sound, Dolby Atmos sound technology, Acoustic Overload Point, stereo speakers tuned by AKG, Dolby Digital sound -
FEATURES Samsung Galaxy Note9 Realme C21
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, proximity sensor, barometer, gyro sensor, hall sensor, RGB sensor, pressure sensor, geomagnetic sensor Accelerometer, proximity sensor, magnetometer, light sensor
Security Devices Face recognition, fingerprint reader, eye scan Fingerprint reader
Additional Phone Features S Pen multi-input, Face Unlock, Wi-Fi Miracast, Screen Write, Smart Select, MU-MIMO technology, Fast Charging, Samsung KNOX, Face recognition, High AOP Mic, Smart View, Live message, Screen off memo, Samsung DeX support, Bixby Vision, Smart Performance Adjuster, Dual Audio, water-carbon cooling system, S Pen remote function Super power saving mode, HyperEngine technology, Reverse charging
OTHERS Samsung Galaxy Note9 Realme C21
Included Accessories Power adapter, tweezer, SIM card removal tool, USB connector, USB-C cable, S Pen, Pen nibs, headset (tuned by AKG) USB cable, power adapter, SIM card removal tool
Compliant Standards IP68 TUV Rheinland
Max Depth of Water Resistance 1.5 m -
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