MTN has finally blocked the free 1gb and 500mb cheat code, *449#, *449*1# & *449*2#.
An agent named "Simon Walker" from MTN Headquarters Office in Lagos discovered the cheat code and it was discovered and blocked on Tuesday 21st, February, 2017.
I know most of us must have really enjoyed the cheat code before it was finally blocked by MTN and some of you are still rocking the data.

You can post your screenshots of it (your data balance) let's see.

When you dial the code this the error msg Short Code is not mapped to any Active Opt-In Campaign