| Secret codes Karbonn A21 |
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| Screenshot Karbonn A21 |
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OS: Android 4.0 (Ice Cream Sandwich) CPU: Dual-core 1.2 GHz Display: 4.5" inc Camera: 5 MP,
Single |
| Hardware and OS Karbonn A21 | |
| Operating system: | Android 4.0 (Ice Cream Sandwich) |
| Processor: | Dual-core 1.2 GHz |
| Internal memory: | 4 GB, 512 MB RAM |
| External memory: | microSD, up to 32 GB (dedicated slot) |
| Display Karbonn A21 | |
| Type: | TFT |
| Size: | 4.5" inc |
| Resolution: | 480 x 800 px |
| Touchscreen: | capacitive touchscreen |
| Display area: | 57.6 cm2 |
| Display aspect ratio: | 5:3 (height:width) |
| Pixel Density: | 207 PPI |
| Colors: | 256K |
| Connectivity Karbonn A21 | |
| 2G Network: | GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| Wi-Fi: | Wi-Fi 802.11 b/g/n |
| Network: | GSM / HSPA |
| SIM card: | Dual SIM (Mini-SIM) |
| Bluetooth: | 2.1, A2DP |
| Edge: | Yes |
| GPRS: | Yes |
| GPS: | Yes, with A-GPS |
| Speed: | HSPA 7.2/0.384 Mbps |
| USB: | microUSB 2.0 |
| Camera Karbonn A21 | |
| Main camera: | 5 MP, Single |
| Specs: | 5 MP, AF |
| Features: | LED flash |
| Video: | Yes |
| Selfie camera: | 1.3 MP, Single |
| Specs: | 1.3 MP |
| Multimedia Karbonn A21 | |
| 3.5 mm Jack: | Yes |
| Radio: | No |
| Design Karbonn A21 | |
| Colors: | Pearl White |
| Battery Karbonn A21 | |
| Battery capacity: | 1800 mAh, Removable Li-Ion |
| Battery life: | Stand by time- Up to 200 h Talking time- Up to 5 h |
| Other Karbonn A21 | |
| SAR: | SAR EU - 0.44 W/kg (head) |
| Release date: | 2012 |
| Sensors: | Accelerometer, proximity |
 | Vivule# | March 24, 2024 |
| Affordable, long battery life, easy to use, durable, physical keyboard, compact size, reliable for calls and texts, budget-friendly. | ||
| Reply | ||
| Pld-Byheqo | May 01, 2024 |
| Limited features, outdated operating system, low internal memory and RAM. | ||
| Reply | ||
| Wazagc | May 14, 2024 |
| Good phone, decent specs, budget-friendly. | ||
| Reply | ||
