How do you format Nokia 3600?

Here are a couple of codes to soft/hard reset/format a Nokia mobile devices:

First Go Phone settings > Phone > Restore Factory Settings and press OK.

When prompted, enter your Phone code and press OK.

Default PIN (PassWord) would be:

1234 or 0000 or 12345 or 00000 or 12345678 or 00000000

Soft Reset - Dial *#7370# and press the Call button.

Hard Reset - Dial *#7780# and press the Call button.

Please remember to backup your contact and other data before doing any of the above as all your data will be deleted!