I am currently on Telecom prepaid and will soon be moving to Vodafone prepaid, I understand currently that you cannot keep your number when moving to vodafone prepaid. As i read here in another post, this is changing by April 1st although I was querying the shop assistants about this and unsurprisingly vodafone have told them nothing about it so they had no idea what i was talking about and kept trying to convince me to go on a plan.

I was wondering if anyone here knew anything about the technicalities of changing phone numbers on vodafone sim cards. Ie if i was to purchase a connection pack now with a new vodafone number would i then be able to change it to my old telecom number when they allow it in a months time. Or do they program the sim cards when you buy them and then they cannot be changed?
Any help appreciated.