[samnyemba]

Set up your Smart Dialing options properly.
Go to:
Call Log -> Menu -> Options -> Smart Dialing ->
-Country Code: +254
-Area Code: delete any thing there
-National Number Length: 9
-> Menu -> Save -> Escape
Then try dialing the numbers (+254xxx... and 0xxx...) again this should fix your problem.
If problem persists, reduce the National Number Length from 9 to 5 and test dialing the numbers (+254xxx... and 0xxx...) again.
If after doing all the above, the problem persists then upgrade your phones OS.
Goodluck!
Posted via BlackBerryForums.com Mobile