Hi,have you tried to insert other provider's sim in your mobile? "Enter Special Code" means that your mobile is locked to your current network and to use other provider's sim you have to unlock your mobile..once i got unlock codes for my mobile from onlinegsmunlock and unlocked my mobile..you can too try getting codes for your mobile and get it unlocked..but before that check whether unlock codes are available for your country and provider..
Hi each mobile has an unique unlock code(special code). If you need unlock code (special code) you can visit this site Unlock-zone.com here you can get the code and unlock your mobile. To get the code you have to mention which country is locked now,network provider and imei number. Then they send unlock code through email.