u must insist.
when i approach the counter, my first sentence is;
" take a look at this iphone and please explain to me how come 1 month old set has this button sunk in?, Is this how Digi achieve lower selling price by selling low quality product? ini reject shop punya ka?"
then she stunned. asked her collegue how....then he look at me..i told him, look at me for wat, look at my phone and explain to me please!...explain to me now please.
Few customer turn and look at me and i sat beside someone that just about to buy iphone from em.
Then they realise they cannot fak with me so just say, ok sir i will change 1 to 1 with another set. Then i tell them ' one to one with what? old phone or new phone?. then she said ' new phone'. I told her, i want you to take out the new phone from the box infront of me.
She brought a new box, open it, change the warranty card with my existing one and passed me the phone. i had to sign some document validating the warranty claim. Thats all

I think u r right. As I posted earlier. They have forward me to 3 different centres n still, not changing for me. Other than sunken button case, my screen appear to be yellowish. Which I really don't know what's wrong.
I thought replacement unit got no box? The one they showed me without the box.