METHOD 1 (only the phone)
1. Poke the soft reset hole beside your power button(Poke and Release)
2. Press and hold the Call and Cancel Button together(Do it immediately after Step 1)
3. Do not release Call and Cancel button, the Samsung Omnia Screen Appear
4. The Reset Screen will appear as below
This is a snapshot of the Samsung Omina Reset screen.
(Image from mobilesilence.blogspot.com)
Press Call to Format or End Call to Cancel.
This hard reset does not erase the 16GB memory.
METHOD 2 (phone and/or storage card [option])
Settings > System > Hard Reset. There is also option to format the storage card.
If you decided not to format and press cancel, that will soft reset the phone.
METHOD 3 (Phone but BE CAREFUL because there is no possibility to cancel)
Just key in the following code on your Dial Pad
After keying in the code, the Phone will restart itself. Phone will be reset to default factory settings straight away. For DZIA5 Firmware, it will format the My Storage Card also.