Celkon
Side-by-side technical data
Celkon A21 vs Celkon Millennia Hero
Compare up to four phones using typed, normalized technical data. Measurements stay numeric, capabilities stay boolean, and options stay comparable.
The verdict
Neither runs away with it: each wins something.
Which one is for you?
Celkon A21, if you care about…
- Bluetooth Version
- Bluetooth 4.0
- against Bluetooth 2.0
Celkon Millennia Hero, if you care about…
- Battery Capacity
- 1,700 mAh
- against 1,500 mAh
- RAM Capacity
- 1 GB
- against 256 MB
- Maximum Storage Capacity
- 8 GB
- against 512 MB
- Display Pixel Density
- 233 ppi
- against 144 ppi
Specification comparison
Battery
| Specification | A21 | Millennia Hero |
|---|---|---|
| Battery Efficiency Rating | — | — |
| Battery Capacity | 1,500 mAh | 1,700 mAh Best value |
| Battery Type | Li-Ion | Li-Ion |
| Fast Charge Power | — | — |
| Battery Features | — | — |
| Battery Endurance | — | — |
| Wireless charging power | — | — |
| Charge cycles | — | — |
| Talk time | 8 h | — |
| Standby time | 120 h | — |
| Music playback time | — | — |
Design
| Specification | A21 | Millennia Hero |
|---|---|---|
| Body Colors | Black, Blue, Red | Black, White, Gold, Silver |
| Body Thickness | 10.8 mm Best value | 11 mm |
| Body Width | 66.1 mm | 64 mm |
| Body Height | 124.8 mm | 125 mm |
| Weight | 115.3 g | 113 g Best value |
| Usable Surface | 57.8 % Best value | 56.9 % |
| Body Materials | — | — |
| Resistance Features | — | — |
| Waterproof Depth | — | — |
| Drop Resistance Class | — | — |
| Repairability Class | — | — |
| Foldable | No | No |
| Rugged Build | No | No |
| Drop Test Count | — | — |
| Unfolded thickness | 10.8 mm | — |
| QWERTY keyboard | — | — |
Performance
| Specification | A21 | Millennia Hero |
|---|---|---|
| Processor Model | MediaTek MT6582 | — |
| Processor Process Size | 28 nm | — |
| Graphics GPU | Mali-400 MP2 | — |
| Storage Type | — | — |
| Maximum CPU Clock | 1.3 GHz Best value | 1.2 GHz |
| Maximum Storage Capacity | 512 MB | 8 GB Best value |
| AnTuTu Score | — | — |
| Geekbench 6 Single-Core | — | — |
| Geekbench 6 Multi-Core | — | — |
| CPU Description | Quad-core 1.3 GHz Cortex-A7 | Quad-core 1.2 GHz |
| Processor Type | Quad-Core | Quad-Core |
| 64-Bit Processor | — | — |
| RAM Capacity | 256 MB | 1 GB Best value |
| RAM Type | — | — |
| Expandable Storage | Yes | Yes |
| AnTuTu version | — | — |
| 3DMark Wild Life Extreme | — | — |
| Maximum memory card | — | — |
Sensors
| Specification | A21 | Millennia Hero |
|---|---|---|
| Fingerprint Sensor Placement | — | — |
Display
| Specification | A21 | Millennia Hero |
|---|---|---|
| Display Aspect Ratio | 3:2 | 5:3 |
| Peak Display Brightness | — | — |
| Display Technology | TFT LCD | TFT LCD |
| Display Diagonal | 4″ | 4″ |
| Display Horizontal Resolution | 320 px | 480 px Best value |
| Display Vertical Resolution | 480 px | 800 px Best value |
| Display Pixel Density | 144 ppi | 233 ppi Best value |
| Display Refresh Rate | — | — |
| Touch Sampling Rate | — | — |
| Display Contrast Ratio | — | — |
| Display Features | — | — |
| Integrated Projector | No | No |
| Projector Brightness | — | — |
| Projector Horizontal Resolution | — | — |
| Projector Vertical Resolution | — | — |
| Cover display diagonal | — | — |
| Cover display refresh rate | — | — |
| Cover display peak brightness | — | — |
| Display colors | — | 256K colors |
Sensor
| Specification | A21 | Millennia Hero |
|---|---|---|
| Sensor Features | Accelerometer | Accelerometer |
Software
| Specification | A21 | Millennia Hero |
|---|---|---|
| Operating System | Android 4.2 | Android 5.1 |
| OS Family | Android | Android |
| OS Version | 4.2 | 5.1 Best value |
| OS Update Support | — | — |
| Direct OS Updates | — | — |
| Google Services | — | — |
| Web browser | — | — |
| Java (J2ME) | — | — |
Connectivity
| Specification | A21 | Millennia Hero |
|---|---|---|
| SIM Configurations | Dual SIM Dual Standby | Dual SIM |
| Cellular Bands | 2G GSM 900, 2G GSM 1800, 3G UMTS 2100 | 2G GSM 900, 2G GSM 1800, 3G UMTS 2100 |
| Cellular Technologies | GSM, HSPA | GSM, HSPA |
| Wi-Fi Standards | Wi-Fi 802.11 b/g/n | Wi-Fi 802.11 b/g/n |
| Wi-Fi Features | Wi-Fi 802.11 b/g/n | — |
| Bluetooth Version | Bluetooth 4.0 Best value | Bluetooth 2.0 |
| Bluetooth Profiles | A2DP | — |
| Navigation Systems | — | A-GPS |
| Connectivity Features | 3.5 mm Audio Jack, FM Radio, microUSB | 3.5 mm Audio Jack, FM Radio |
| USB Version | microUSB | microUSB |
| SAR American Head | — | — |
| SAR American Body | — | — |
| SAR (EU) head | 0.99 W/kg | 0.34 W/kg Best value |
| SAR (EU) body | 1.39 W/kg | 0.76 W/kg Best value |
| Messaging | — | — |
Audio
| Specification | A21 | Millennia Hero |
|---|---|---|
| Microphone Count | — | — |
| Audio Features | A2DP, Loudspeaker | Loudspeaker |
| Alert types | — | — |
Technical
| Specification | A21 | Millennia Hero |
|---|---|---|
| EAN / GTIN | — | — |
| UPC | — | — |
| Launch price | — | — |
| MPN | — | — |
| Launch price (USD) | — | — |
Features
| Specification | A21 | Millennia Hero |
|---|---|---|
| Built-in functions | — | — |
