The Karbonn A21 is an early 2013 release Android smartphone. Only released in India, the device has low/mid range specifications and features. It's powered by a dual-core 1.2GHz processor, with 512MB RAM. it has a 4.5" TFT display, with a resolution of 480 x 800. It sports a 5MP camera, 4GB internal storage, which can be increased by up 32GB with microSD. The devie runs on a 1800mAh battery.