my friend lost the iphone 4s while clubbing last weekend, she bought the iphone last feb from apple store in Eldon Square Newcastle..

my question is

1. should she call the apple uk to inform them and blocked the phone imei? do the imei barred really works here?

2. she want to buy new set, but we are not familiar with iphone sales in malaysia, is there any official unlocked phone sell in lowyat plaza in kl? or we have to buy from maxis/celcom..

please assist..

thanks