In depth comparison and review of Realme C21 and Xiaomi Redmi Note 9T. 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.
| DESIGN AND DIMENSIONS | Realme C21 | Xiaomi Redmi Note 9T |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Form Factor | Touch | Touch | |
| Height | 165.2 mm | 161.9 mm | Realme C21 has greater height than Xiaomi Redmi Note 9T. |
| Width | 76.4 mm | 77.3 mm | Xiaomi Redmi Note 9T has greater width than Realme C21. |
| Depth | 8.9 mm | 9.05 mm | Realme C21 is narrower than Realme C21. |
| Weight | 190 g | 199 g | Realme C21 is lighter than Realme C21. |
| Body Colour | Cross black | Cross blue | Daybreak purple | |
| Protection | - | Splashproof | |
| Waterproof (Water-resistant) | - | - | |
| SAR Value | - | 0.937 W/kg (body), 0.592 W/kg (head), 1.981 W/kg (limb) | |
| Connector Type | Micro-USB Headset jack - mini-phone 3.5mm |
- | |
| SIM Card Type (Size) | Nano SIM | Nano SIM | |
| SIM Card Qty | Dual-SIM | Dual-SIM |
| DISPLAY | Realme C21 | Xiaomi Redmi Note 9T |
|---|
| Display Type | LCD display | - | |
|---|---|---|---|
| Display Technology | LCD | - | |
| Screen Size (Display Size) | 6.5" | 6.53" | Xiaomi Redmi Note 9T has larger screen size than Realme C21. |
| Screen Resolution (Display Resolution) | 1600 x 720 pixels | 2340 x 1080 pixels | Xiaomi Redmi Note 9T has better screen resolution than Realme C21. |
| Display Format | HD+ | Full HD+ | |
| Pixel Density | - | 395 ppi | |
| Aspect Ratio | 20:9 | 19.5:9 | |
| Max Brightness | 420 cd/m² | 450 cd/m² | Xiaomi Redmi Note 9T has better display brightness than Realme C21. |
| Contrast Ratio | - | 1500:1 | |
| Display Features | Mini-drop display | Reading mode, night mode, Dot Display | |
| Display Protection (Screen Protector) | - | Corning Gorilla Glass 5 (scratch resistant glass) |
| PROCESSOR | Realme C21 | Xiaomi Redmi Note 9T |
|---|
| Processor Type (CPU) | MediaTek Helio G35 | MediaTek Dimensity 800U | |
|---|---|---|---|
| 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. |
| Graphics System (GPU) | PowerVR GE8320 | Mali-G57 |
| MEMORY | Realme C21 | Xiaomi Redmi Note 9T |
|---|
| RAM | LPDDR4X SDRAM - 3 GB | LPDDR4X SDRAM - 4 GB | Xiaomi Redmi Note 9T has more RAM than Realme C21. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 32 GB | 64 GB | Xiaomi Redmi Note 9T has more internal memory than Realme C21. |
| Memory Interface | - | UFS 2.2 | |
| Supported Flash Memory Cards (Expandable Memory) | microSD | microSD |
| CAMERA | Realme C21 | Xiaomi Redmi Note 9T |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 3 | 3 | |
|---|---|---|---|
| Sensor Resolution | 13 Megapixel | 48 Megapixel | Xiaomi Redmi Note 9T has better camera resolution than Realme C21. |
| Sensor Size | - | 1/2" | |
| Lens Aperture | F/2.2 | F/1.79 | Xiaomi Redmi Note 9T has better lens aperture than Realme C21. |
| Lens Construction | 5-element | - | |
| Pixel Size | - | 0.8 μm | |
| 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 | Flash | |
| Video Resolutions | 1920 x 1080 (1080p) at 30 fps | 1920 x 1080 (1080p) at 30 fps, 1920 x 1080 (1080p) at 60 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) | Phase Detect Auto-Focus (PDAF), AI Triple camera, Chroma boost | 4-in-1 Super Pixel |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | 2 Megapixel | 2 Megapixel | Both phones have the same second camera resolution. |
|---|---|---|---|
| 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 | - | |
| Pixel Size (2nd Camera) | - | 1.75 μm | |
| Camera Functions (2nd Camera) | B&W lens | Macro camera |
| 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 | - | |
| Pixel Size (3rd Camera) | - | 1.75 μm | |
| Camera Functions (3rd Camera) | Macro camera | Depth camera | |
| Camera Features (3rd Camera) | 4cm macro photography | - |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 5 Megapixel | 13 Megapixel | Xiaomi Redmi Note 9T has better front camera resolution than Realme C21. |
| Lens Aperture (Front) | F/2.2 | F/2.25 | 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 | Face recognition | Both phones have face detection. |
| Video Resolutions (Front) | - | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps, Slo-mo video 1280 x 720 (720p) at 120 fps |
| BATTERY AND CHARGING | Realme C21 | Xiaomi Redmi Note 9T |
|---|
| Battery Capacity (Battery Size) | 5000 mAh | 5000 mAh | Both phones have the same battery capacity. |
|---|
| CELLULAR | Realme C21 | Xiaomi Redmi Note 9T |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 5G | Xiaomi Redmi Note 9T has more advanced generation mobile network. |
| Operating System | Android 10 | Android 10 | |
| User Interface | Realme UI | MIUI 12 | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou | GPS, GLONASS, Galileo |
| COMMUNICATIONS | Realme C21 | Xiaomi Redmi Note 9T |
|---|
| Data Transmission | FDD-LTE, TDD-LTE | FDD-LTE, TDD-LTE, 5G NR FR1 | |
|---|---|---|---|
| 2G Band | 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 12, Band 17, Band 18, Band 19, Band 20, Band 26, Band 28, Band 32, Band 38, Band 40, Band 41, Band 42 | |
| 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 700a, FDD 700b, FDD 800 lower, FDD 800 upper, FDD 800 DD, FDD 850+, FDD 700 APT, FDD 1500 L, TDD 2600, TDD 2300, TDD 2500, TDD 3500 | |
| 5G NR Band | - | N1, n3, n5, n7, n8, n20, n28, n38, n41, n77, n78, n79 | |
| 5G NR Frequency | - | FDD 2100, FDD 1800, FDD 850, FDD 2600, FDD 900, FDD 800, FDD 700APT, TDD TD 2600, TDD TD 2500, TDD TD 3700, TDD TD 3500, TDD TD 4500 | |
| Wireless Interface | IEEE 802.11b/g/n | IEEE 802.11a/b/g/n/ac | |
| Bluetooth | Bluetooth 5.0 | Bluetooth 5.1 | |
| NFC | - | Yes | Xiaomi Redmi Note 9T has NFC reader for mobile payments. |
| MEDIA | Realme C21 | Xiaomi Redmi Note 9T |
|---|
| Supported Digital Audio Standards | - | AAC, LDAC, LHDC |
|---|
| FEATURES | Realme C21 | Xiaomi Redmi Note 9T |
|---|
| 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, gyro sensor, infrared (IR) sensor | |
| 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 | Infrared remote control, linear motor, WriteBooster technology, Host Performance Booster (HPB) technology |
| OTHERS | Realme C21 | Xiaomi Redmi Note 9T |
|---|
| Included Accessories | USB cable, power adapter, SIM card removal tool | Protective cover, power adapter, SIM card removal tool, USB-C cable | |
|---|---|---|---|
| Compliant Standards | TUV Rheinland | TUV Rheinland Low Blue Light Certification |
cs
sk
de
it
es
fr
hu
pt
ru
pl
br
ro
