Take your original or pre-paid sim card to the key cutting booth in the basement entrance at Oasis Mall. All done for 5 possibly 10 dirhams....or just buy one for 20 from Etisalat.
I just got myself a fancy new iPhone 4s too :) I went to Etisalat and there was no contract to sign up for (I am on a Wasel renewal pay as you go). For a microsim card it is dhs20 but if you are like me and need an additional card for your car phone then they have a special sim card with a removable centre and you get the 2 for dhs50.
Hope that helps
I have lovely new iphone 4s but no microsim card... does anyone know where I can get one? I don't really want to sign up for an expensive year contract, and would rather do prepaid. any help appreciated!