The overall rating is based on review by our experts
| Basic Information | |
| Release Date | 5 Mar 2021 |
| Status | Available |
| Hardware & Software | |
| CPU | Octa core, 2.3 GHz, Cortex A53 |
| GPU | PowerVR GE8320 |
| Chipset | MediaTek Helio G35 (12 nm) |
| CPU Cores | 8 Cores |
| OS Version | v10 |
| Fabrication | 12 nm |
| Architecture | 64 bit |
| User Interface | Realme UI |
| Operating System | Android |
| Performance Optimization | MediaTek HyperEngine Gaming Technology, Super Power Saving Mode |
| Display | |
| Notch | Waterdrop |
| Features | 6.52" HD+ Mini-drop Fullscreen Display, 20:9 Aspect Ratio, 420 nits Brightness, Corning Gorilla Glass 3 Protection, Eye Protection Mode, Multi-touch |
| Brightness | 420 nits |
| Resolution | 720x1600 px (HD+) |
| HDR Support | No |
| Screen Size | 6.52 inches (16.56 cm, 102.6 cm²) |
| Aspect Ratio | 20:9 |
| Cameras | |
| OIS | No |
| Zoom | 4 x Digital Zoom |
| Flash | LED Flash |
| Sensor | CMOS image sensor (13MP wide, PDAF + 2MP B/W depth + 2MP macro, 4cm focus) |
| Aperture | f/2.2 (wide), f/2.4 (depth), f/2.4 (macro) |
| Settings | Exposure compensation, ISO control, White balance presets |
| Autofocus | Phase Detection autofocus |
| Selfie Camera | |
| OIS | No |
| Flash | Screen Flash |
| Sensor | CMOS (5MP, f/2.2, wide, 1/5.0", 1.12µm) |
| Aperture | f/2.2 |
| Autofocus | Fixed Focus |
| Video FPS | 30 fps |
| Resolution | 5 MP, f/2.2, Primary Camera |
| Design | |
| Build | Back: Plastic, Glass front (Gorilla Glass 3), plastic frame |
| Width | 75.9 mm |
| Colors | Cross Blue, Cross Black |
| Height | 164.5 mm |
| Weight | 209 grams |
| IP Rating | Splash Resistant Design |
| Thickness | 9.8 mm |
| Battery | |
| Standby | Up to 47 Days (advertised standby time) |
| Capacity | 5000 mAh |
| USB Type | microUSB 2.0, USB OTG |
| Placement | Non-removable |
| Battery type | Li-Ion (Lithium Ion) |
| Quick Charging | 10W Fast Charging |
| Reverse Charging | Yes (Reverse wired charging) |
| Memory | |
| RAM | 3 GB / 4 GB |
| USB OTG | Yes |
| RAM Type | LPDDR4X |
| Card Slot | microSDXC (Dedicated 3-card slot) |
| Storage Type | eMMC 5.1 |
| Internal Storage | 32 GB / 64 GB |
| Expandable Memory | Up to 256 GB |
| Network & Connectivity | |
| GPS | Yes with A-GPS, Glonass |
| NFC | No |
| USB | Mass storage device, USB charging, microUSB 2.0, USB OTG |
| EDGE | Available |
| GPRS | Available |
| WLAN | Wi-Fi 4 (802.11 b/g/n), MIMO, Wi-Fi Direct, Hotspot |
| Speed | HSPA, LTE |
| Sensors & Security | |
| Compass | Yes |
| Barometer | No |
| Gyroscope | Virtual Gyroscope |
| Face Unlock | Yes |
| Light Sensor | Light sensor, Proximity sensor, Accelerometer, Compass |
| Accelerometer | Yes |
| Proximity Sensor | Yes |
| Multimedia | |
| Video | 1080p@30fps playback, MP4, MKV, AVI, 3GP |
| FM Radio | Yes |
| Audio Jack | 3.5 mm |
| Alert Types | Vibration, MP3, WAV ringtones |
| Loudspeaker | Yes |
| Audio Features | 3.5mm headphone jack, Dedicated mic for noise reduction, Vibration, MP3, WAV ringtones |
| Document Reader | Yes |
| More | |
| Made By | China |
| Features | MediaTek Helio G35 (12nm) Octa-Core Processor with PowerVR GE8320 GPU, Massive 5000 mAh Battery with Reverse Wired Charging and Super Power Saving Mode, 6.52" HD+ Mini-drop Fullscreen Display with Corning Gorilla Glass 3, 13MP AI Triple Rear Camera (13MP Main + 2MP Depth + 2MP Macro) with Super NightScape, 5MP AI Front Selfie Camera, Rear-Mounted Capacitive Fingerprint Scanner, Dedicated 3-Card Slot (Dual Nano-SIM + microSD up to 256GB), TÜV Rheinland High Reliability Certified, 3.5mm Audio Jack, FM Radio, Splash Resistant Design, Realme UI based on Android 10 |
The Realme C21 established itself as one of Bangladesh's most dependable entry-level daily drivers in the 11K to 12K segment, combining a long-lasting 5000 mAh battery, an AI triple rear camera system, and industry-recognized TÜV Rheinland Smartphone High Reliability Certification. Designed with a geometric art cross-hatch texture that resists fingerprint smudges and light water splashes, measuring 164.5 x 75.9 x 9.8 mm and weighing 209 grams, the handset is available in Cross Blue and Cross Black. Dominating the front is an expansive 6.52-inch HD+ (720 x 1600 pixels) IPS LCD mini-drop display boasting an 82.2% screen-to-body ratio, 269 ppi pixel density, 420 nits brightness, and scratch protection provided by Corning Gorilla Glass 3. Under the hood, it is powered by MediaTek's 12nm Helio G35 octa-core processor (8x2.3 GHz Cortex-A53) paired with an IMG PowerVR GE8320 GPU and HyperEngine optimizations, coupled with up to 4GB of LPDDR4X RAM and up to 64GB of eMMC 5.1 internal storage, expandable up to 256GB via a dedicated 3-card microSD slot. Mobile photography is driven by an AI triple rear camera array headlined by a 13MP primary sensor (f/2.2) with PDAF and Super NightScape, accompanied by a 2MP portrait depth sensor and a 2MP dedicated macro lens (4cm focus), complemented by a 5MP front selfie camera. Powered by a heavy-duty 5000 mAh battery with 10W charging, Super Power Saving Mode, and reverse wired charging capability via microUSB 2.0, a rapid rear-mounted physical fingerprint scanner, a 3.5mm headphone jack, FM Radio, and Realme UI based on Android 10, the Realme C21 stands as a proven, highly durable budget smartphone.
| Display Type | IPS LCD |
| Refresh Rate | 60 Hz |
| Touch Screen | Capacitive Touchscreen, Multi-touch |
| Pixel Density | 269 ppi |
| Screen Protection | Corning Gorilla Glass v3 |
| Bezel-less Display | Yes with waterdrop notch |
| Screen to Body Ratio | 82.2 % |
| Video FPS | 30 fps |
| Resolution | 13 MP, f/2.2, Primary Camera + 2 MP, f/2.4, Depth Camera + 2 MP, f/2.4, Macro Camera |
| Camera Setup | Triple |
| Shooting Modes | Continuous Shooting, High Dynamic Range mode (HDR), Super NightScape, Portrait Mode, Photo, Video, Ultra Macro, Time-Lapse, Panoramic View, Chroma Boost, Expert Mode |
| Camera Features | 4 x Digital Zoom, Auto Flash, Face detection, Touch to focus, Chroma Boost, Super NightScape |
| Video Recording | 1920x1080 @ 30 fps, 1280x720 @ 30 fps |
| Image Resolution | 4128 x 3096 Pixels |
| Camera Setup |
| Single Camera Setup (Waterdrop notch cutout) |
| Camera Features | AI Beautification, Screen Flash, Selfie HDR, Front Portrait Mode, Panoramic View |
| Video Recording | 1920x1080 @ 30 fps |
| Ruggedness |
| Splash resistant, Corning Gorilla Glass 3 front protection, TÜV Rheinland Smartphone High Reliability Certification |
| Waterproof | Splash proof |
| SpecialDesign | Geometric art cross hatch design with fine tactile micro-textures resistant to fingerprint smudges, rear-mounted capacitive fingerprint scanner |
| Wireless Charging |
| No |
| VoLTE |
| Yes |
| Network | 2G, 3G, 4G |
| Infrared | No |
| SIM Size | SIM1: Nano, SIM2: Nano |
| SIM Slot | Dual SIM (Nano-SIM, dual stand-by) |
| Bluetooth | v5.0, A2DP, LE |
| SAR Value | Head: 1.045 W/kg, Body: 0.643 W/kg |
| Wi-fi Hotspot | Yes |
| Finger Sensor Type |
| Capacitive touch sensor |
| Fingerprint Sensor | Yes |
| Finger Sensor Position | Rear-mounted |





