Hard reset Karbonn A21

OS: Android 4.0 (Ice Cream Sandwich)

CPU: Dual-core 1.2 GHz

Display: 4.5" inc

Camera: 5 MP, Single

For Hard reset Karbonn A21 use following steps

1. Using the Power button - turn off the smartphone

2. Press the 2 buttons Volume up and Power at the same time for a few seconds

3. Hold down the keys until the Boot Mode menu appears

4. You must select the Recovery item. The Volume up key is used to navigate the menu, and the Volume down key is used to confirm the selection.

Android logo Karbonn A21

5. When the Android Robot image appears on the screen, press the Volume Up and Power keys simultaneously

6. Select the "wipe data / factory reset" menu item, the Volume Up / Down keys are used to navigate the menu, and the Power key is used to confirm the selection

7. Go to "yes" and press the Power button

8. Select menu item "reboot system now"

9. Smartphone reset to factory settings

Thomas Nilan
Smartphone Expert

Thomas Nilan is a mobile phone expert with in-depth knowledge of the Android and iOS operating systems, who understands the settings of various hidden features that allow you to expand the capabilities of your smartphone, as well as get information about what is going on inside the phone for future repairs. He is an authority in his field, which has allowed him to become a ghostwriter for several technology publications, and he enjoys writing small mobile applications for testing smartphones.