If you installed Cyanogen Mod 11 on a Samsung Galaxy Note 1 (GT-N7000) phone, you would find that your cell phone keeps serving messages. These messages are Cell Broadcasts. In my location, these messages were more than 6 a minute and appeared each time the cell phone tower location waves changed. It becomes too difficult to use the phone.
To overcome this problem, the following workaround can be applied, that should stop these messages from appearing:
Start the terminal app on the phone. It is also called a terminal emulator. Enter the following commands as shown below:
pm disable com.android.cellbroadcastreceiver <enter>
Restart the phone and the cell broadcast messages should have stopped.