Go to your phone screen for Settings for Network IP Address.
Use Chrome browser on your pc (or laptop), input the IP Address at address bar and hit Enter on your keyboard.
Default username/password should be admin/admin, unless you have changed it.
Scroll to bottom for User Settings / User Preferences make sure of the following is at Default (with box checked, if not, make sure to check the boxes):
DefauktRingtone
HomeAppColumns
ScreenSaverShowCustomContents
Brightness
Click Submit at bottom of page, your OBi phone will reboot to lock the changes.
Good luck!