I own a Samsung Omnia I (SGH-i900) and I forgot its password. What can I do?

If it is sim password,I would suggest you to get an unlock code for your Samsung SGH-I900 Omnia mobile phone from Unlocking4u.com at reasonable price.

You can use your google account to unlock samsung sgh i900 omnia from old password. If you never setup google account before, you still can unlock samsung phone password with your puk code but all your previous data will be erased.

DEAR FRIEND, YOU WILL HAVE TO RELOAD YOUR PHONE WITH A FLASH FILE.

I forgot my unlock code Problem with the Samsung SGH-i900 Omnia Unlocked Cellular Phone

i am from afghanistan my phone want pin number please give me this
model: SGH-i900
SSN:- i900GSMH
RATED: 3.7V----- MA
Fccid : A3lsghi900
Made in korea BY samsung
lmel 352819/02/132140/8
S/N R2WQ857081Z

I think you'll have to hard reset your device, in order to get passed the password request procedure. You, most probably, know that a hard reset will return your device to its factory defaults, thus deleting all the applications you have installed, as well as all your personal data and settings. Anyway, to hard reset your device, press and hold both the SEND and END buttons, and, whilst keeping them pressed, press the reset pin with the stylus pen. Release the keys when a confirmation request screen comes up. Follow the on-screen instructions (if I'm not mistaken, confirm the hard reset procedure by pressing the SEND button).
Hope you are able to have a fully functional device again soon.
Best regards, Carlos

dial *228 and press 1 when prompted to ur unlock code will be ur last 4 digits of ur number

take out the SIM card press *2767*3855#, just a reminder it will delete everything on the phone, it will be reset back to the factory settings

I done a hard reset.. I don't find any other way to do it.

Looked around and found this on XDA-developers forum: Turn your phone off Press red and green buttons and after press phone on, You will get 2 options, 1 format: press phone on 2 cancel: press phone off