My brother changed his security code on this phone he gave me and he can't remember it. MOBILE PHONE DETAILS: - NOKIA 6070 - IMEI: 357699012156806 - CELL PROVIDER: SUN CELLULAR I believe my brothers CELL PROVIDER is GLOBE TELECOM Please help me asap. When I turn the phone on, it recognizes my sim card (SUN CELLULAR) and can receive and answer calls. However, i need to unlock and enter security code before being able to use the phone.