MTN Midnight bundle gives unlimited internet access from 12am to 5am each night. For Ghs1, get 3GB data to browse between 3am to 5am and for Ghs3, get 5GB to browse between 12am to 5am.
Once you reach the cap for the amount you have subscribed for, your browsing speed will be throttled down to 128kbps for the rest of the night until 5am.
To activate, dial *138*1*4#.
This bundle does not expire and can be reused another day same period.