This cheat is formed by a promo from MTN SURPRISE.
Note:When you send 11 to 400,you will be given 100 Mb,to continue getting it,you just have to do the following:
¤¤>Send 11 to 400
¤¤>Back-date your phone to 2013 or 2012 or any other year you want
¤¤>Resend 11 to 400 and you will recieve another 100Mb
¤¤>Continue back-dating your phone and be sending 11 to 400