In depth comparison and review of CUBOT RainBow 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.
| DESIGN AND DIMENSIONS | CUBOT RainBow | Realme C21 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Form Factor | Touch | Touch | |
| Height | 142 mm | 165.2 mm | Realme C21 has greater height than CUBOT RainBow. |
| Width | 72 mm | 76.4 mm | Realme C21 has greater width than CUBOT RainBow. |
| Depth | 8.8 mm | 8.9 mm | CUBOT RainBow is narrower than CUBOT RainBow. |
| Weight | 163 g | 190 g | CUBOT RainBow is lighter than CUBOT RainBow. |
| Body Colour | Black | Cross black | Cross blue | |
| Waterproof (Water-resistant) | - | - | |
| SAR Value | 1.291 W/kg (body), 0.429 W/kg (head) | - | |
| Connector Type | Micro-USB - 5 pin Micro-USB Type B Headset jack - mini-phone 3.5mm |
Micro-USB Headset jack - mini-phone 3.5mm |
|
| SIM Card Type (Size) | Micro SIM | Nano SIM | |
| SIM Card Qty | Dual-SIM | Dual-SIM |
| DISPLAY | CUBOT RainBow | Realme C21 |
|---|
| Display Type | LCD display | LCD display | |
|---|---|---|---|
| Display Technology | IPS | LCD | |
| Screen Size (Display Size) | 5" | 6.5" | Realme C21 has larger screen size than CUBOT RainBow. |
| Screen Resolution (Display Resolution) | 1280 x 720 pixels | 1600 x 720 pixels | Realme C21 has better screen resolution than CUBOT RainBow. |
| Display Format | HD | HD+ | |
| Pixel Density | 294 ppi | - | |
| Aspect Ratio | - | 20:9 | |
| Max Brightness | 450 cd/m² | 420 cd/m² | CUBOT RainBow has better display brightness than Realme C21. |
| Colour Depth | 16.7 million colours | - | |
| Contrast Ratio | 1300:1 | - | |
| Display Features | - | Mini-drop display |
| PROCESSOR | CUBOT RainBow | Realme C21 |
|---|
| Processor Type (CPU) | MediaTek | MediaTek Helio G35 | |
|---|---|---|---|
| Processor Number | MT6580 | - | |
| Clock Speed | 1.3 GHz | 2.3 GHz | Realme C21 has higher clock speed than CUBOT RainBow. |
| Processor Core Qty | Quad-core | 8-core | Realme C21 has higher processor core quantity than CUBOT RainBow. |
| Graphics System (GPU) | Mali 400 MP | PowerVR GE8320 |
| MEMORY | CUBOT RainBow | Realme C21 |
|---|
| RAM | 1 GB | LPDDR4X SDRAM - 3 GB | Realme C21 has more RAM than CUBOT RainBow. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 16 GB | 32 GB | Realme C21 has more internal memory than CUBOT RainBow. |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 32 GB | microSD |
| CAMERA | CUBOT RainBow | Realme C21 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 1 | 3 | |
|---|---|---|---|
| Sensor Resolution | 13 Megapixel | 13 Megapixel | Both phones have the same camera resolution. |
| Lens Aperture | F/2.0 | F/2.2 | CUBOT RainBow has better lens aperture than CUBOT RainBow. |
| Lens Construction | 5-element | 5-element | |
| Focus Adjustment | Automatic | Automatic | |
| Digital Zoom | - | 4x | |
| Special Effects | Beauty face | HDR | |
| HDR Mode | Auto HDR mode | - | |
| Camera Modes | Timer mode, Continuous shot, Cheese Shot | Panorama, Time-lapse mode, Slow motion mode, Beauty mode, Expert Mode, Nightscape capture mode, Portrait, Filter mode, Super nightscape | |
| Face Recognition (Face ID) | Face recognition | - | CUBOT RainBow has face detection. |
| Light Source | LED light | LED flash | |
| Video Resolutions | 1920 x 1080 (1080p), 1280 x 720 (720p) | 1920 x 1080 (1080p) at 30 fps | |
| Camera Features (Functions) | Anti-shake | Phase Detect Auto-Focus (PDAF), AI Triple camera, Chroma boost |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | - | 2 Megapixel | |
|---|---|---|---|
| Lens Aperture (2nd Camera) | - | F/2.4 | |
| 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) | 5 Megapixel | 5 Megapixel | Both phones have the same front camera resolution. |
| Lens Aperture (Front) | F/2.8 | F/2.2 | Realme C21 has better front lens aperture than CUBOT RainBow. |
| Lens Element Qty (Front) | 4-element | 3-element | |
| Special Effects (Front) | Intelligent beauty | 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. |
| BATTERY AND CHARGING | CUBOT RainBow | Realme C21 |
|---|
| Battery Capacity (Battery Size) | 2200 mAh | 5000 mAh | Realme C21 has larger battery capacity than CUBOT RainBow. |
|---|---|---|---|
| Battery Technology | Lithium Ion | - |
| CELLULAR | CUBOT RainBow | Realme C21 |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 3G | 4G | Realme C21 has more advanced generation mobile network. |
| Operating System | Android 6.0 (Marshmallow) | Android 10 | |
| User Interface | - | Realme UI | |
| Navigation | GPS, A-GPS | GPS, A-GPS, GLONASS, BeiDou |
| COMMUNICATIONS | CUBOT RainBow | Realme C21 |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+ | 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 | |
| 3G UMTS Frequency | - | 2100, 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 | |
| 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 | |
| Wireless Interface | IEEE 802.11b/g/n | IEEE 802.11b/g/n | |
| Bluetooth | Bluetooth 4.0 | Bluetooth 5.0 | |
| Messaging Services | SMS, MMS | - |
| MEDIA | CUBOT RainBow | Realme C21 |
|---|
| Supported Digital Audio Standards | WAV, WMA, AAC, AMR, MP3, FLAC, OGG, APE (Monkey's Audio), MID | - | |
|---|---|---|---|
| Supported Digital Video Standards | MKV, RMVB, RM, FLV, AVI, MOV, XviD, MPEG-4, WMV, ASF, 3GP, M4V | - |
| FEATURES | CUBOT RainBow | 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, ambient light sensor, proximity sensor, G-sensor | Accelerometer, proximity sensor, magnetometer, light sensor | |
| Security Devices | - | Fingerprint reader | |
| Additional Phone Features | Glass-film-film (GFF) archecture | Super power saving mode, HyperEngine technology, Reverse charging |
| OTHERS | CUBOT RainBow | Realme C21 |
|---|
| Included Accessories | USB cable, power adapter | USB cable, power adapter, SIM card removal tool | |
|---|---|---|---|
| Compliant Standards | - | TUV Rheinland |
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