I used kaddressbook to call twinkle with this dial command: twinkle --call 0%n (a zero is put before any number) This does not work anymore since a kde update. The gui preference is also gone. Twinkle is still called, but without the zero. I found the setting in "akonadi_contactrc" [Phone Dial Settings] DialPhoneNumberAction=UseExternalPhoneApplication PhoneCommand=twinkle --call 0%n But it seems not to be used anymore?