First method:

  1. At first, hold down the Power rocker for a while in order to switch off the device.Hard Reset OBI WORLDPHONE SF1
  2. Afterwards press and hold together Volume Up and Power button for a few seconds.HardReset OBI WORLDPHONE SF1
  3. You can release held keys when you see the OBI logo in front of you.
  4. To enter the Recovery Mode hold down the Power key for a short while.Hard Reset OBI WORLDPHONE SF1
  5. In the next step use Volume buttons to select "wipe data/factory reset" and tap the Power button to confirm.Wipe data on OBI WORLDPHONE SF1
  6. Afterwards choose "yes" from the menu, and accept it with Power button.Master Reset OBI WORLDPHONE SF1
  7. After a while accept option "reboot system now" using Power rocker.Factory Reset OBI WORLDPHONE SF1
  8. That's all. The hard reset operation should be completed.
See the Next method!

Hard Reset KARBONN SMART A60 - Erase all data by Factory Reset

Hard Reset CoolPAD Modena - bypass Screen Lock by Recovery Mode

Hard Reset will erase all of your data
All described operations you are doing at your own risk.

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