I forget my security code for my nokia 5220 IMEI no. 353662019186766,and i cannot open my music player it shows 'operation failed' and my phone gets restart when i enter into 'applications'

Try to reset your phone to factory setting.

Code to reset the Nokia 5220 XpressMusic

1.- Basic Reset or Soft Reset for nokia 5220 XpressMusic 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 for nokia 5220 XpressMusic
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)

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.

If during this reset process it requires code, input 12345 as Nokia master reset code

Hope this help and if helpful RATE please.

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