Here is a tip on How To Subscribe For Mtn Free on your blackberry - See more at: http://www.naijaplay.net/forum/showtopic.php?id=12417#sthash.3yq53d4O.dpuf
Send BBC to 556 and press 1 to reply to get a month subscription on blackberry
But make sure you have up to #50 on your Sim card
Don't worry about your money nothing will happen to them
Remove your battery and insert after 10 minute.
For NONE BB users you can enjoy it with simple server.
Note : You can activate it on any phone!