solution ya Ndibalema iko based on "Call your carrier...Ask for the MEP code..." sasa wewe uko Bongo, simu hii ni ya T Mobile ya Marekani, hao T Mobile walikubali kweli kukupa unlock codes wakati wewe si mteja wao?did exactly like Ndibalema has adviced. we managed to get the MEP 2 and 4 codes kwa kutumia IMEI number