Samsung B7320 Omnia PRO hard reset
With the B7320 turned off press and hold F(5) key + power on the phone. Select Master reset or Master clear to repair your B7320 OmniaPro phone.
Use this method to hard reset your Samsung B7320 OmniaPRO phone: Enter *2767*3855#. Warning! All your data including contacts, messages etc. will be lost! Copy all your necessary data/Contacts/Messages etc. to SIM or make backup to your PC before full reset! Take out SIM card before full reset.
Settings > Security > Master Clear: reset settings to their factory defaults.