You need to switch to another telecom but still want to keep your mobile number? Mobile number portability will be available in Kuwait June 15th 2013 with the three telecom operators Zain, Watanyia and Viva.
There will be no cost and all that is required is to settle your bill with the company, go to the other one and have them switching it with a new sim card in less than 24hrs.
I know i will not be switching anytime soon because im currently very satisfied with my services with Zain. 😉