The Celkon A21 is a 2014 Android 4.2.2 smartphone powered by the Mediatek MT6582 (28 nm) with 256MB and 512MB internal storage. It features a 4.0", TFT, 320.0x480.0 display and is available in Black, Blue, Red.

The A21 is equipped with a Li-Ion 1500 mAh battery, a 15 MP, Yes main camera, a 3 MP front camera. The device uses a Dual SIM (Dual stand-by) configuration. It weighs 115.3 g.

Factory resetting your Celkon A21 through the Settings menu is the easiest way to erase all personal data and restore the device to factory defaults. This method is ideal when the phone is still accessible and functional. All apps, contacts, photos and accounts will be permanently removed so ensure you have backed up everything important first.

All personal data, accounts, and apps will be permanently removed.