Camera
For photography, the Karbonn A21 was equipped with a single 5 MP autofocus rear camera, accompanied by an LED flash. The camera offered basic photography functions, capable of capturing everyday moments but with limitations in low-light conditions and overall detail. The phone also included a 1.3 MP front-facing camera, which at the time was primarily meant for video calls rather than selfies, given the significant differences in expected quality from contemporary front cameras.