3

1.- Basic Reset or Soft Reset for nokia C2-03

This option restores the .ini files from the ROM.
Does not erase data (photos, videos, documents) or applications from
a third party. 
Key Code *# 7780 # (click this combination of keys on the
keyboard in the mobile)

2.- Total Reset or Hard Reset nokia C2-03

This option restores the original operating system from the ROM.
Formats the C: partition and deletes all data including the memory
card.
 Key Code *#7370# (click this combination of keys on the keyboard
in the mobile)
or
You can also achieve Total Reset by pressing and holding down following keys:
* + 3 + Green Button (call) immediately after turning the mobile on.

How do I restore factory settings on my Nokia C2-06?

Select Menu > Settings> Rest. factory sett. (or Reset device or Restore factory sett. or Rest. fact. sett.).
To reset only preference settings, but keep all personal data, such as contacts, messages and media file, select Restore settings only (or Restore sett. only orSettings only).
To reset all preference settings and delete all personal data, select Restore all (or All).
Important: To proceed to reset, the battery must be full and the
mobile device connected to the charger. If during the course of reset,
the mobile stop receiving electricity it can ruin the internal flash
memory of the mobile device and stop function.