1) simple migrate to MTN paygn plan by sending 400 to 131 or you can still migrate by dialling *400# to migrate
N.B Don't migrate with your money 2) after a succesfull migration, dial this code *123*878# it will give an error message don't mind it 3) now load #100 into your MTN SIM and send MTN 1GB to 131 without wasting time quickly switch off the phone and remove the battery and insert again 4) after the booting of the phone quickly send 104 to 131 then you will be given . To check mb use *559#
N.B : DO NOT ,DO NOT USE *123*4*4# or 2 to 131 to check your mb