Two SGS3's in the house. One works perfectly (despite having been dropped) the other has been babied like the most fragile precious glass. And has had problems since first getting it out of the box. 

Calls sound like they are underwater, whether the caller is called or phones me. I contacted Samsung about this within a few days of getting the phone. They blamed the network.

Phone keeps freezing and judders instead of smoothly transitioning on a swipe. Reset the phone, don't add in any new apps, and try it for a week they said. It still kept happening. 

Then the screen started getting a pale orange glow whenever the phone woke. 

Finally, it decided not to charge. 

In my other calls, Samsung variously referred me to the user manual, blamed the network (yeah, right, the phone has been on two networks in NZ and one in Australia - and they all have call issues? Don't think so!) and kept saying that if the problems persisted they would arrange for the phone to be replaced. 

Last week they told me the phone would need to be replaced and told me they would talk to the store (Norman Ross). I called Norman Ross to check on procedures for this to happen. I get to Norman Ross on the weekend & they knew nothing about it. 

Today, Samsung logged another call from me and this time gave me a transaction number. I now have to drop the phone off at Norman Ross to - wait for it - be sent in for repairs. Repairs will take around 14 business days, but may take longer if they have to order in parts. 

So, the crappy phone that hasn't worked properly from day one will now become a phone I can't use for the best part of a month and will come back as a repaired phone. I am so angry I could spit chips. 

Moral of the story - if anything seems wrong within those first two weeks don't stuff around trying to get Samsung to help you. Take it back and get the store to exchange it. I missed that window of opportunity by following Samsung's advice.