The following steps are intended for the Kyocera Kona.
Press OK button.
Select Settings, then press OK.
Select Reset/Delete, then press OK.
Enter Lock Code.
(Note: Lock code is default the last 4 digit of the mobile number, unless personalized by user.)
Select Reset Phone, then press OK.
Press Reset Phone.
Once the phone has restarted, you will need to set up the device for the first time.