Reset the security/lock code for Nokia Phone

     According to the China site, there are two ways to format Nokia N73 or smart phone running Symbian OS S60 3rd Edition UI. These two ways are known as �soft reset� and �hard reset�.
     A �soft reset� is triggered by pressing the *#7370# secret code while the phone is unlock and power on. This secret code will format N73 phone memory (all user data files are deleted) and restore settings to factory default (thus the lock code will be reset to 12345 again).
     However, Symbian OS will ask for a valid lock code (even the phone is unlocked) before proceed to format the phone memory :-(
On the other hand, a �hard reset� (which I didn�t test while owning the N73) is said able to force Symbian to format phone memory and restore settings to factory default without asking for a valid lock code.
     Again, a �hard reset� requires a secret code. Although there is no technical skill required to trigger a �hard reset�, you might need another hand to help (if it�s too tough to complete the steps at your own):
     First, backup the user data (contacts, messages or SMS, notes, calendar entries, etc) if you�re able to (i.e. the phone is not locked).
Next, the core steps to trigger a �hard reset� via secret code:
1) Power off the phone.
2) Press these 3 keys simultaneously: CALL key, ASTERISK key (i.e. *), THREE key.
3) Don�t release that 3 keys until I say so.
4) Press the POWER button to power on the phone again and wait.
5) After the NOKIA logo appears, the �Formatting�� keyword will appear after couple of minutes. Now, you�re safe to release that 3 keys.
     Finally, the N73 should have been formatted (hard reset) and ready to configure the phone as if it�s just out of the box (suppose the �hard reset� secret code really works)

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