In depth comparison and review of Realme C21 and Apple iPhone SE (3rd generation). 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 | Apple iPhone SE (3rd generation) |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | - | A2783 | |
| Form Factor | Touch | Touch | |
| Height | 165.2 mm | 138.4 mm | Realme C21 has greater height than Apple iPhone SE (3rd generation). |
| Width | 76.4 mm | 67.3 mm | Realme C21 has greater width than Apple iPhone SE (3rd generation). |
| Depth | 8.9 mm | 7.3 mm | Apple iPhone SE (3rd generation) is narrower than Realme C21. |
| Weight | 190 g | 144 g | Apple iPhone SE (3rd generation) is lighter than Realme C21. |
| Body Colour | Cross black | Cross blue | Starlight | Midnight | Red | |
| Body Material | - | Aluminium, glass | |
| Protection | - | Dustproof, water-resistant, splash-resistant | |
| Waterproof (Water-resistant) | - | Yes | Apple iPhone SE (3rd generation) is waterproof. |
| IP rating | - | IEC 60529 IP67 | |
| SAR Value | - | 0.99 W/kg (body), 0.98 W/kg (head) | |
| Connector Type | Micro-USB Headset jack - mini-phone 3.5mm |
Lightning | |
| SIM Card Type (Size) | Nano SIM | Nano SIM, Electronic SIM card (e-SIM) | |
| SIM Card Qty | Dual-SIM | Dual-SIM |
| DISPLAY | Realme C21 | Apple iPhone SE (3rd generation) |
|---|
| Display Type | LCD display | LCD display | |
|---|---|---|---|
| Display Technology | LCD | Retina HD display with IPS technology | |
| Screen Size (Display Size) | 6.5" | 4.7" | Realme C21 has larger screen size than Apple iPhone SE (3rd generation). |
| Screen Resolution (Display Resolution) | 1600 x 720 pixels | 1334 x 750 pixels | Realme C21 has better screen resolution than Apple iPhone SE (3rd generation). |
| Display Format | HD+ | - | |
| Pixel Density | - | 326 ppi | |
| Aspect Ratio | 20:9 | - | |
| Max Brightness | 420 cd/m² | 625 cd/m² | Apple iPhone SE (3rd generation) has better display brightness than Realme C21. |
| Contrast Ratio | - | 1400:1 | |
| Display Enhancement Technology | - | Dolby Vision | |
| Display Features | Mini-drop display | Display Zoom, Reachability (screen shifting), True Tone display, Wide colour display (P3), Dark mode, Haptic touch, Hybrid Log-Gamma (HLG) | |
| Display Protection (Screen Protector) | - | Fingerprint-resistant oleophobic coating |
| PROCESSOR | Realme C21 | Apple iPhone SE (3rd generation) |
|---|
| Processor Type (CPU) | MediaTek Helio G35 | Apple A15 Bionic | |
|---|---|---|---|
| Clock Speed | 2.3 GHz | - | |
| Processor Core Qty | 8-core | - | |
| Graphics System (GPU) | PowerVR GE8320 | - |
| MEMORY | Realme C21 | Apple iPhone SE (3rd generation) |
|---|
| RAM | LPDDR4X SDRAM - 3 GB | - | |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 32 GB | 64 GB | Apple iPhone SE (3rd generation) has more internal memory than Realme C21. |
| Supported Flash Memory Cards (Expandable Memory) | microSD | - |
| CAMERA | Realme C21 | Apple iPhone SE (3rd generation) |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 3 | 1 | |
|---|---|---|---|
| Sensor Resolution | 13 Megapixel | 12 Megapixel | Realme C21 has better camera resolution than Apple iPhone SE (3rd generation). |
| Lens Aperture | F/2.2 | F/1.8 | Apple iPhone SE (3rd generation) has better lens aperture than Realme C21. |
| Lens Construction | 5-element | 6-element | |
| Optical Image Stabiliser (OIS) | - | Optical Image Stabiliser (OIS) | Apple iPhone SE (3rd generation) has optical stabilisation. |
| Focus Adjustment | Automatic | Automatic | |
| Digital Zoom | 4x | 5x | Apple iPhone SE (3rd generation) has better digital zoom than Realme C21. |
| Special Effects | HDR | Natural, Studio, Contour, Stage, Stage Mono, High‑Key Mono | |
| HDR Mode | - | Smart HDR | |
| Camera Modes | Panorama, Time-lapse mode, Slow motion mode, Beauty mode, Expert Mode, Nightscape capture mode, Portrait, Filter mode, Super nightscape | Burst mode, Panorama, Live Photos, Timelapse video, Portrait mode with advanced bokeh and Depth Control, Portrait Lighting, wide colour capture for photos and Live Photos | |
| Light Source | LED flash | True Tone LED 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, 3840 x 2160 (4K) at 30 fps, 3840 x 2160 (4K) at 60 fps, 3840 x 2160 (4K) at 24 fps, Slo-mo video 1920 x 1080 (1080p) at 240 fps | |
| Camera Features (Functions) | Phase Detect Auto-Focus (PDAF), AI Triple camera, Chroma boost | Sapphire crystal lens cover, Cinematic video stabilisation, Focus Pixels, Cinematic video stabilisation, Playback zoom, geotagging, Stereo Recording, Continuous autofocus video, 8MP still photos recording 4K video, Time‑lapse video with stabilisation, Slow Sync, Advanced red-eye correction, Optical image stabilization for video, Extended dynamic range for video, HEIF image capture, Digital zoom up to 3x for video, QuickTake video, Deep Fusion, Photographic Styles |
| 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 | 7 Megapixel | Apple iPhone SE (3rd generation) has better front camera resolution than Realme C21. |
| Lens Aperture (Front) | F/2.2 | F/2.2 | Both phones have the same front camera lens aperture. |
| Lens Element Qty (Front) | 3-element | - | |
| Special Effects (Front) | HDR | Natural, Studio, Contour, Stage, Stage Mono, High‑Key Mono | |
| HDR Mode (Front) | - | Auto HDR mode | |
| Camera Modes (Front) | Time-lapse mode, Beauty mode, portrait mode, AI Beauty, Filter mode, Panoramic mode | Burst mode, Live Photos, Portrait mode with advanced bokeh and Depth Control, Portrait Lighting, wide colour capture for photos and Live Photos | |
| Face Recognition (Face ID) | Face recognition | - | Realme C21 has face detection. |
| Light Source (Front) | - | Retina Flash | |
| Video Resolutions (Front) | - | 1280 x 720 (720p), 1920 x 1080 (1080p) at 30 fps, Slo-mo video 1920 x 1080 (1080p) at 120 fps | |
| Camera Features (Front) | - | Auto image stabilisation, Cinematic video stabilisation, QuickTake video, Deep Fusion |
| BATTERY AND CHARGING | Realme C21 | Apple iPhone SE (3rd generation) |
|---|
| Battery Capacity (Battery Size) | 5000 mAh | - | |
|---|---|---|---|
| Wireless Charging | - | Yes | Apple iPhone SE (3rd generation) can be charged wirelessly. |
| Wireless Charging Standards | - | Qi | |
| Run Time Details | - | Playback (audio): up to 50 hrs Playback (video): up to 15 hrs Playback (streamed video): up to 10 hrs |
|
| Battery Technology | - | Lithium Ion |
| CELLULAR | Realme C21 | Apple iPhone SE (3rd generation) |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 5G | Apple iPhone SE (3rd generation) has more advanced generation mobile network. |
| Operating System | Android 10 | iOS 15 | |
| User Interface | Realme UI | - | |
| Intelligent Assistant | - | Siri | |
| Payment Technology | - | Apple Pay | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou | GPS, GLONASS, BeiDou, Galileo, QZSS |
| COMMUNICATIONS | Realme C21 | Apple iPhone SE (3rd generation) |
|---|
| Data Transmission | FDD-LTE, TDD-LTE | EDGE, HSPA+, LTE, DC-HSDPA, LTE Advanced, VoLTE, FDD-LTE, TDD-LTE, VoWiFi, LAA, 5G NR FR1 | |
|---|---|---|---|
| 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 5, Band 8, Band 10 | |
| 3G UMTS Frequency | 2100, 850, 900 | 2100, 1900, 850, 900, 1700 EAWS | |
| 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 13, Band 17, Band 18, Band 19, Band 20, Band 25, Band 26, Band 28, Band 30, Band 32, Band 34, Band 38, Band 39, Band 40, Band 41, Band 42, Band 46, Band 48, Band 66 | |
| 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 700c, FDD 700b, FDD 800 lower, FDD 800 upper, FDD 800 DD, FDD 1900+, FDD 850+, FDD 700 APT, FDD 2300 WCS, FDD 1500 L, TDD 2000, TDD 2600, TDD 1900, TDD 2300, TDD 2500, TDD 3500, TDD 5150, TDD 3600, FDD 1700 - 2110 AWS-3 | |
| 5G NR Band | - | N1, n2, n3, n5, n7, n8, n20, n28, n38, n41, n66, n77, n78, n79, n40, n25, n12, n48, n30 | |
| 5G NR Frequency | - | FDD 2100, FDD 1900PCS, FDD 1800, FDD 850, FDD 2600, FDD 900, FDD 800, FDD 700APT, TDD TD 2600, TDD TD 2500, FDD AWS-3, TDD TD 3700, TDD TD 3500, TDD TD 4500, TDD 2300, FDD 1900, n12, TDD 3500, FDD 2300 | |
| Wireless Interface | IEEE 802.11b/g/n | IEEE 802.11ax | |
| Bluetooth | Bluetooth 5.0 | Bluetooth 5.0 | |
| NFC | - | Yes | Apple iPhone SE (3rd generation) has NFC reader for mobile payments. |
| MEDIA | Realme C21 | Apple iPhone SE (3rd generation) |
|---|
| Supported Digital Audio Standards | - | Audible, MP3, FLAC, Apple Lossless, AC-3, AAC-LC, LPCM, HE-AAC, Audible AAX, Audible AAX+, protected AAC, EAC3, HE-AAC v2 | |
|---|---|---|---|
| Supported Digital Video Standards | - | M-JPEG, H.264, HEVC, MPEG-4 Part 2, HEIF | |
| Sound Enhancements | - | Dolby Digital Plus sound, Dolby Digital sound | |
| Video Enhancements | - | HDR10, Hybrid Log-Gamma (HLG) |
| FEATURES | Realme C21 | Apple iPhone SE (3rd generation) |
|---|
| 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, 3-axis gyro sensor, digital compass, barometer | |
| Security Devices | Fingerprint reader | Fingerprint reader | |
| Additional Phone Features | Super power saving mode, HyperEngine technology, Reverse charging | MIMO technology, Apple TV support (2nd or later), AirPlay Mirroring, Third‑generation Neural Engine, Express Transit cards with power reserve, 4K HDR AirPlay Mirroring, FaceTime HD (1080p), 16‑core Neural Engine |
| OTHERS | Realme C21 | Apple iPhone SE (3rd generation) |
|---|
| Included Accessories | USB cable, power adapter, SIM card removal tool | Lightning to USB-C cable | |
|---|---|---|---|
| Compliant Standards | TUV Rheinland | IEC 60529 IP67, HAC (Hearing Aid Compatible) | |
| Max Depth of Water Resistance | - | 1 m | |
| Max Operating Temperature | - | 35 °C | |
| Min Operating Temperature | - | 0 °C | |
| Humidity Range Operating | - | 5 - 95% (non-condensing) |
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