Hard Reset on Lenovo K900

How to Hard Reset on Lenovo K900 IdeaPhone?

Make sure you turned off the phone.
Hold down the Volume Up key and the Power button.
Wait until the Android logo appears and then release the keys.
Open Recovery Mode by pressing the Power button.
Next select "wipe data/factory reset".
To do so, use the Volume Down key to navigate and the Volume Up key to select.
Choose "yes - delete all user data" using the same keys.
Press "Reboot system now" to finish the process.
That's all! After these actions, your phone data will be deleted.