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- Last Updated: 9th December 2025
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Display 4.50-inch (480x800)
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Processor Qualcomm Snapdragon S4 Play
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Front Camera 1.3MP
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Rear Camera 5MP
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RAM 512MB
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Storage 4GB
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Battery Capacity 1800mAh
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OS Android 4
Karbonn A21 Summary
Karbonn A21 mobile was launched in December 2012. The phone comes with a 4.50-inch touchscreen display offering a resolution of 480x800 pixels. Karbonn A21 is powered by a 1.2GHz one-core Qualcomm Snapdragon S4 Play (MSM8225) processor. It comes with 512MB of RAM. The Karbonn A21 runs Android 4 and is powered by a 1800mAh non-removable battery.
As far as the cameras are concerned, the Karbonn A21 on the rear packs 5-megapixel camera. It sports a 1.3-megapixel camera on the front for selfies.
Karbonn A21 is based on Android 4 and packs 4GB of inbuilt storage that can be expanded via microSD card (up to 32GB). The Karbonn A21 is a dual-SIM (GSM and GSM) mobile that accepts Regular and Regular cards. It was launched in Pearl White colour.
Connectivity options on the Karbonn A21 include GPS and 3G.
As of 9th December 2025, Karbonn A21 price in India starts at Rs. 6,677.
Karbonn A21 Full Specifications
| Brand | Karbonn |
| Model | A21 |
| Price in India | ₹6,677 |
| Release date | December 2012 |
| Form factor | Bar |
| Battery capacity (mAh) | 1800 |
| Removable battery | No |
| Colours | Pearl White |
| Screen size (inches) | 4.50 |
| Touchscreen | Yes |
| Resolution | 480x800 pixels |
| Processor | 1.2GHz one-core |
| Processor make | Qualcomm Snapdragon S4 Play (MSM8225) |
| RAM | 512MB |
| Internal storage | 4GB |
| Expandable storage | Yes |
| Expandable storage type | microSD |
| Expandable storage up to (GB) | 32 |
| Rear camera | 5-megapixel |
| Rear flash | LED |
| Front camera | 1.3-megapixel |
| Operating system | Android 4 |
| Wi-Fi | No |
| GPS | Yes |
| Bluetooth | Yes |
| NFC | No |
| Infrared | No |
| USB OTG | No |
| FM | No |
| Number of SIMs | 2 |
| Wi-Fi Direct | No |
| Mobile High-Definition Link (MHL) | No |
| SIM 1 | |
| SIM Type | Regular |
| GSM/CDMA | GSM |
| 3G | Yes |
| 4G/ LTE | No |
| Supports 4G in India (Band 40) | No |
| SIM 2 | |
| SIM Type | Regular |
| GSM/CDMA | GSM |
| 3G | Yes |
| 4G/ LTE | No |
| Supports 4G in India (Band 40) | No |
| Compass/ Magnetometer | No |
| Proximity sensor | No |
| Accelerometer | No |
| Ambient light sensor | No |
| Gyroscope | No |
| Barometer | No |
| Temperature sensor | No |
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