Cheapest Mtn Data Plan: Mtn 100 naira Subscription

Mtn has very cheap data plans and also costly ones. The one in this thread is one of the very cheapest data plans Accross all networks in Nigeria.
New MTN 1GB DATA for just N100
The subscription is divided into two, one cost just N100 while the other cost N150.
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Not to talk much, follow the steps below to opt in.
the plan get K-leg in that it doesn’t work on all phones
MTN introduces 1GB DATA for just N100
NOTE: This is for MTN users only. Now, to opt in :
• Dial *567*58# and reply with 1 to activate it if you are eligible.
• For N150, dial *567*59# and reply with 1 to activate it if you are eligible.
Enjoy surfing!
Did it work on your Sim?
Then you’re lucky.