There are many cases that we set a password in phone and later we forget. If you are a nob mostly you will take the mobile to service man to reset the password. But if you are a Samsung Wave 2 with Bada OS user then you can reset your password to default by simply dialing some numbers.
I am tested it with Samsung Wave 2 on Bada 1.2 and Bada 2.0 and its successfully reset to the default one. It may be work with other Bada OS phones.
* Before hard reset your phone must be charged to a minimum of 60%
1. Backup your contacts
2. Remove SIM and Memmory Card
3. Now dial *2767*3855# and wait till the phone reboots.
Thats it ! Done ! Now your phone will be in default state !