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i will try to hard reset with code *#7370#,it ask security code,and i give 12345 but it says code error, plz help me.
RED, GREEN & CAMERA all depressed whilst powering on until Nokia "Shaking hands" logo appears will avoid need to input lock code for disposing of device, but you would need to visit Nokia Care facility with proof of purchase for it to be reset to default value of 12345.
Hard Reset will not Reset the Security Code. For that you must visit Nokia Care along with a proof of ownership (Bill / Invoice)