Realme C21 vs. Xiaomi Redmi Note 11

Phone Comparison, Reviews and Tests

In depth comparison and review of Realme C21 and Xiaomi Redmi Note 11. 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

Realme C21 vs. Xiaomi Redmi Note 11 Comparison Chart
DESIGN AND DIMENSIONS Realme C21 Xiaomi Redmi Note 11
Product Type Smartphone Smartphone
Form Factor Touch Touch
Height 165.2 mm 159.87 mm Realme C21 has greater height than Xiaomi Redmi Note 11.
Width 76.4 mm 73.87 mm Realme C21 has greater width than Xiaomi Redmi Note 11.
Depth 8.9 mm 8.09 mm Xiaomi Redmi Note 11 is narrower than Realme C21.
Weight 190 g 179 g Xiaomi Redmi Note 11 is lighter than Realme C21.
Body Colour Cross black | Cross blue Twilight blue | Blue star | Graphite grey
Protection - Dustproof, splashproof
Waterproof (Water-resistant) - -
IP rating - IP53
SAR Value - 0.989 W/kg (body), 0.596 W/kg (head), 1.996 W/kg (limb)
Connector Type Micro-USB
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 Realme C21 Xiaomi Redmi Note 11
Display Type LCD display OLED display
Display Technology LCD AMOLED
Screen Size (Display Size) 6.5" 6.43" Realme C21 has larger screen size than Xiaomi Redmi Note 11.
Screen Resolution (Display Resolution) 1600 x 720 pixels 2400 x 1080 pixels Xiaomi Redmi Note 11 has better screen resolution than Realme C21.
Display Format HD+ Full HD+
Pixel Density - 409 ppi
Aspect Ratio 20:9 -
Max Brightness 420 cd/m² 1000 cd/m² Xiaomi Redmi Note 11 has better display brightness than Realme C21.
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 Mini-drop display DCI-P3 Wide colour gamut, Dot Display
PROCESSOR Realme C21 Xiaomi Redmi Note 11
Processor Type (CPU) MediaTek Helio G35 Qualcomm Snapdragon 680
Clock Speed 2.3 GHz 2.4 GHz Xiaomi Redmi Note 11 has higher clock speed than Realme C21.
Processor Core Qty 8-core 8-core Both phones have the same number of phone cores.
Graphics System (GPU) PowerVR GE8320 Qualcomm ADRENO 610
MEMORY Realme C21 Xiaomi Redmi Note 11
RAM LPDDR4X SDRAM - 3 GB LPDDR4X SDRAM - 4 GB Xiaomi Redmi Note 11 has more RAM than Realme C21.
Internal Memory Size (Storage Capacity) 32 GB 128 GB Xiaomi Redmi Note 11 has more internal memory than Realme C21.
Memory Interface - UFS 2.2
Supported Flash Memory Cards (Expandable Memory) microSD microSDHC, microSD, microSDXC - up to 1 TB
CAMERA Realme C21 Xiaomi Redmi Note 11
MAIN CAMERA
Number of Main Cameras 3 4
Sensor Resolution 13 Megapixel 50 Megapixel Xiaomi Redmi Note 11 has better camera resolution than Realme C21.
Lens Aperture F/2.2 F/1.8 Xiaomi Redmi Note 11 has better lens aperture than Realme C21.
Lens Construction 5-element -
Focus Adjustment Automatic Automatic
Digital Zoom 4x -
Special Effects HDR -
Camera Modes Panorama, Time-lapse mode, Slow motion mode, Beauty mode, Expert Mode, Nightscape capture mode, Portrait, Filter mode, Super nightscape -
Light Source LED flash LED flash
Video Resolutions 1920 x 1080 (1080p) at 30 fps 1920 x 1080 (1080p) at 30 fps, 3840 x 2160 (4K) at 30 fps
Camera Features (Functions) Phase Detect Auto-Focus (PDAF), AI Triple camera, Chroma boost AI Quad camera
SECOND CAMERA
Sensor Resolution (2nd Camera) 2 Megapixel 8 Megapixel Xiaomi Redmi Note 11 has better second camera resolution than Realme C21.
Lens Type (2nd Camera) - Ultra wide-angle lens
Lens Aperture (2nd Camera) F/2.4 F/2.2 Xiaomi Redmi Note 11 has better second camera lens aperture than Realme C21.
Lens Element Qty (2nd Camera) 3-element -
Field of View (2nd Camera) - 118 degree(s)
Camera Functions (2nd Camera) B&W lens -
THIRD CAMERA
Sensor Resolution (3rd Camera) 2 Megapixel 2 Megapixel Both phones have the same third camera resolution.
Lens Aperture (3rd Camera) F/2.4 F/2.4 Both phones have the same lens aperture of the third camera.
Lens Element Qty (3rd Camera) 3-element -
Camera Functions (3rd Camera) Macro camera Macro camera
Camera Features (3rd Camera) 4cm macro photography -
FOURTH CAMERA
Sensor Resolution (4th Camera) - 2 Megapixel
Lens Aperture (4th Camera) - F/2.4
Camera Functions (4th Camera) - Depth camera
FRONT CAMERA
Number of Front Cameras 1 1
Sensor Resolution (Front) 5 Megapixel 13 Megapixel Xiaomi Redmi Note 11 has better front camera resolution than Realme C21.
Lens Aperture (Front) F/2.2 F/2.4 Realme C21 has better front lens aperture than Realme C21.
Lens Element Qty (Front) 3-element -
Special Effects (Front) HDR -
Camera Modes (Front) Time-lapse mode, Beauty mode, portrait mode, AI Beauty, Filter mode, Panoramic mode -
Face Recognition (Face ID) Face recognition - Realme C21 has face detection.
Video Resolutions (Front) - 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps
BATTERY AND CHARGING Realme C21 Xiaomi Redmi Note 11
Battery Capacity (Battery Size) 5000 mAh 5000 mAh Both phones have the same battery capacity.
Fast Charging Technology - Pro fast charging Xiaomi Redmi Note 11 has fast charging technology.
Talk Time - 2580 minutes
Run Time Details - Talk: up to 2580 min
Playback (video): up to 22 hrs
Playback (audio): up to 215 hrs
CELLULAR Realme C21 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 Realme UI MIUI 13
Navigation GPS, A-GPS, GLONASS, BeiDou GPS, GLONASS, BeiDou, Galileo
COMMUNICATIONS Realme C21 Xiaomi Redmi Note 11
Data Transmission 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 5, Band 8 Band 1, Band 2, Band 4, Band 5, Band 8
3G UMTS Frequency 2100, 850, 900 2100, 1900, 1700, 850, 900
4G LTE Band Band 1, Band 3, Band 5, Band 7, Band 8, Band 20, Band 28, Band 38, Band 40, Band 41 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 1800+, FDD 850, FDD 2600, FDD 900, FDD 800 DD, FDD 700 APT, TDD 2600, TDD 2300, TDD 2500 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 802.11b/g/n IEEE 802.11a/b/g/n/ac
Bluetooth Bluetooth 5.0 Bluetooth 5.0
NFC - Yes Xiaomi Redmi Note 11 has NFC reader for mobile payments.
MEDIA Realme C21 Xiaomi Redmi Note 11
Sound Enhancements - Hi-Res audio certified
FEATURES Realme C21 Xiaomi Redmi Note 11
Phone Functions Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert -
Sensors Accelerometer, proximity sensor, magnetometer, light sensor Accelerometer, ambient light sensor, proximity sensor, digital compass, gyroscope
Security Devices Fingerprint reader Face recognition, fingerprint reader (side)
Security Technology - AI face unlock
Additional Phone Features Super power saving mode, HyperEngine technology, Reverse charging Z-axis linear vibration motor, dual stereo speakers, IR blaster, write booster
OTHERS Realme C21 Xiaomi Redmi Note 11
Included Accessories USB cable, power adapter, SIM card removal tool Power adapter, SIM card removal tool, USB-C cable, protective case
Compliant Standards TUV Rheinland IP53, TUV SUD, SGS, IEC 60529
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