Karbonn A21 Hard Reset

Hard Reset:
  • Press and hold VOLUME UP + POWER KEY
  • now you see green screen dont release volume up key
  • after 10 seconds you see red screen, now release Volume up key.
  • now tou see recovery options.
  • select wipe data with factory reset and press power key for 2 sec.
  • now select yes and press power key for 2 second.
  • now reboot device.
karbonn a21 hard reset

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