Have you been in a situation where you couldn't subscribe for an internet data bundle plan because they keep telling you ''You cannot subscribe while you still have an active plan". ?
Well, whatever your case may be, the codes below will show you how to stop or cancel a data plan (Blackberry or Mobile) for Mtn, Airtel, Glo and 9mobile Networks.
For BlackBerry Plans[Airtel] SMS deactivate to 440
[Glo] SMS cancel to 777
[MTN] SMS no to 21600
[9mobile] Dial *399*2#
For Mobile Internet Plans[Airtel] SMS stop to 140
[Glo] SMS cancel to 127
[MTN] SMS reset to 131
[9mobile] SMS stop to 229 or Dial *229*0#