How to subscribe for MTN data plans on Android

Bundle   Plan Price      Validity   Text to 131    USSD Code

10MB         100             24 Hrs             104     *104#

25MB         150             24 Hrs             112     *112#

50MB         200             24 Hrs             113     *113#

150MB       500               7 Days          103     *103#

260MB     1000             30 Days          106     *106#

325MB     1300             30 Days          109     *109#

750MB     2000             30 Days          110     *110#

1.5GB      3500             30 Days          111     *111#