Celkon A21
$30
Overview
Celkon A21 is a budget Android smartphone released in 2014 with a 4-inch TFT, Mediatek MT6582 (28 nm) chipset, 3.15 main camera, and 1500 mAh battery.
Priced at $30, it targets users seeking budget performance.
Specifications of Celkon A21
The display of Celkon A21 measures 4 inches with TFT technology. Peak brightness reaches 250 nits for excellent outdoor visibility. The screen renders at 320x480 pixels resolution.
The camera system of Celkon A21 features 1 rear cameras: 3.15 main. Video recording supports up to 480p.
The battery of Celkon A21 has 1500mAh capacity with 5 wired charging. A full charge takes approximately 240 min minutes.
The performance of Celkon A21 is powered by the Mediatek MT6582 (28 nm) chipset with Mali-400MP2 GPU. AnTuTu benchmark achieves 17000.
The memory of Celkon A21 offers 1GB RAM. RAM uses DDR3 technology. Storage is 512MB 256MB RAM.
The connectivity of Celkon A21 includes Wi-Fi Wi-Fi 802.11 b/g/n, and Bluetooth 4.0.
The build of Celkon A21 weighs 115.3g with Plastic frame and glossy-plastic back. Dimensions measure 124.8 x 66.1 x 10.8 mm.
The software of Celkon A21 runs Android 4.2.2 (Jelly Bean) with Stock Android.
Compare Celkon A21
Frequently Asked Questions about Celkon A21
Celkon A21 has a 3.15 camera suitable for casual photography. For professional photography, consider phones with higher-resolution sensors.
Celkon A21 with Mediatek MT6582 (28 nm) can handle casual gaming. For intensive gaming, consider phones with flagship chipsets.
Celkon A21 has a 1500mAh battery. Battery life varies based on usage patterns.
Celkon A21 at $30 is a budget device. It's worth buying if you prioritize affordability over premium features.
Celkon A21 supports 5 wired charging with full charge in approximately 240 min minutes.
Celkon A21 has a 4-inch TFT with 60Hz refresh rate and 250 nits peak brightness. HDR support includes No.
Celkon A21 in Category Rankings
See how Celkon A21 ranks in these categories:
Verdict
The Celkon A21 delivers practical value for users prioritizing affordability over premium features. Pick this phone for essential smartphone functionality, if you prioritize affordability while still needing core features.
Key Specifications
Display
4"
Main Camera
3.15
Chipset
Mediatek MT6582 (28 nm)
Full Specifications
Network
| Technology | GSM / HSPA |
| 2G Bands | GSM / |
| 3G Bands | HSDPA 2100 |
| 4G LTE Bands | N/A |
| 5G Sub-6 Bands | N/A |
| 5G mmWave Bands | N/A |
| Speed | N/A |
| Carrier Aggregation | |
| SIM | Dual SIM (Mini-SIM) |
| Dual SIM Mode | Dual SIM |
| eSIM Support | |
| VoLTE Support | N/A |
| VoWiFi | N/A |
| NR CA Support | N/A |
Launch
| Announced | 2014 |
| Status | Discontinued |
| Availability | N/A |
| Model Variants | N/A |
| Launch Price | $80 |
Body & Design
| Dimensions (mm) | 124.8 x 66.1 x 10.8 mm |
| Weight (g) | 115.3 |
| Build Materials | Plastic |
| Frame | Plastic |
| Back Finish | glossy-plastic |
| Colors | ["Black", "Blue", "Red"] |
| IP Rating | N/A |
| Rugged Certifications | N/A |
| Ingress Gaskets | N/A |
| Form Factor | Bar |
| Hinge Type | N/A |
| Folded Dimensions | N/A |
| Thermal Solution | Passive |
| Notification/Alert | |
| Haptics | Basic |
Display
| Panel Type | TFT |
| Size (inches) | 4 |
| Resolution (px) | 320x480 pixels |
| Aspect Ratio | 1:2 |
| Pixel Density (ppi) | 179 |
| Screen-to-body Ratio (%) | 57.8 |
| Refresh Rate (Hz) | 60 |
| Adaptive Refresh Rate | |
| Touch Sampling Rate (Hz) | 60 |
| Peak Brightness (nits) | 250 |
| HDR Standards | |
| Color Gamut | sRGB |
| Color Depth | 16 |
| PWM Dimming (Hz) | N/A |
| Glass Protection | N/A |
| Oleophobic Coating | N/A |
| Curvature | Flat |
| Always-on Display | |
| Display Driver IC | N/A |
| Cover Display |
Platform (SoC)
| OS at Launch | Android 4.2.2 (Jelly Bean) |
| Update Policy | N/A |
| Chipset | Mediatek MT6582 (28 nm) |
| CPU | Quad-core 1.3 GHz Cortex-A7 |
| GPU | Mali-400MP2 |
| NPU/AI TOPs | N/A |
| ISP Features | Basic |
| Modem | mt6582 |
| Wi-Fi/Bluetooth Chip | N/A |
| Throttling Behavior | N/A |
| Geekbench Single-Core | N/A |
| Geekbench Multi-Core | N/A |
| AnTuTu Score | 17000 |
| 3DMark Scores | N/A |
Memory & Storage
| RAM | 1GB |
| RAM Type | DDR3 |
| Storage | N/A |
| Storage Type | 512MB 256MB RAM |
| Storage Speed | emmc-5.1 |
| Expandable Storage | microSDHC |
| Slot Type | microSD |
| USB OTG | |
| Filesystem Encryption | basic |
Main Camera System
| Rear Cameras | 1 |
| Main Sensor | 3.15 |
| Main Sensor Size | 1/4-inch |
| Main Sensor Model | N/A |
| Main Lens | f/2.8, 3.2mm |
| OIS | |
| Autofocus | Fixed Focus |
| Pixel Binning | |
| Ultrawide | N/A |
| Telephoto | N/A |
| Macro | N/A |
| Depth/ToF/LiDAR | |
| Flicker/Color Sensors | N/A |
| Flash | LED |
| Video Resolution | 480p |
| HDR/Dolby Vision Video | |
| Video Codecs | h264 |
| Slow Motion | |
| Video Stabilization | |
| Night Mode Features | basic |
| RAW/Pro Controls | N/A |
Selfie Camera
| Resolution | 1.3 |
| Sensor Size | 1/4-inch |
| Aperture | f/2.8 |
| AF/OIS | |
| Secondary Front Cam | |
| Front Flash | |
| Video | 480p |
| HDR/Dolby Vision | N/A |
| Face Unlock | basic |
Audio
| Loudspeakers | |
| 3.5mm Jack | |
| Hi-Res Audio | |
| Spatial Audio / Dolby Atmos | |
| Microphones | 1 |
| Bluetooth Codecs | aac |
| DAC/Amp | N/A |
Connectivity
| Wi-Fi | Wi-Fi 802.11 b/g/n |
| Wi-Fi Features | Wi-Fi 802.11 b/g/n |
| Bluetooth | 4.0 |
| NFC | |
| IR Blaster | |
| UWB | N/A |
| Positioning | |
| Dual-Band GNSS | |
| FM Radio | |
| USB | Micro-USB |
| Display Out | |
| eSIM Capacity |
Sensors
| Fingerprint Sensor | N/A |
| 3D Face ID | N/A |
| Accelerometer | |
| Gyroscope | |
| Magnetometer | |
| Proximity Sensor | |
| Ambient Light | |
| Barometer | |
| Thermo/Hygrometer | N/A |
| UV Sensor | N/A |
| Hall Sensor | |
| Color Temp Sensor | |
| Health Sensors | N/A |
| Satellite SOS |
Battery & Charging
| Capacity (mAh) | 1500 |
| Type | Li-Ion |
| Removable | |
| Endurance Rating | N/A |
| Wired Charging | 5 |
| Wired Standard | 5v-1a |
| 0-50% Time (mins) | 120 min |
| Full Charge Time | 240 min |
| Wireless Charging | N/A |
| Wireless Standard | N/A |
| Reverse Wireless | N/A |
| Reverse Wired | |
| Charger in Box | 5w-charger |
| Battery Health Features | Basic |
Software
| OS at Launch | Android 4.2.2 (Jelly Bean) |
| Update Window | N/A |
| UI Skin / Launcher | Stock Android |
| Feature Drops | N/A |
| App Cloning | N/A |
| Game Mode | |
| Privacy Features | Basic |
| Accessibility | Basic |
| Satellite Messaging UI |
Miscellaneous
| In-Box Contents | charger-cable-manual |
| Recycled Materials (%) | N/A |
| Repairability Score | N/A |
| Warranty | N/A |
Reviews & Ratings
186 ratings
Showing 3 of 186 reviews
Alex R.
2 weeks ago
Absolutely love the camera on this phone! The zoom is incredible and the photos are so crisp. Battery life is also a huge plus.
Ben C.
1 month ago
Great performance and beautiful display. My only complaint is that it feels a bit heavy, but you get used to it. Solid phone overall.
Chloe D.
3 months ago
The best phone I've ever owned. It's fast, the software is clean, and the build quality is top-notch. Highly recommend!