What is the definitive test for the iPhone 4 brown or yellow discoloration problem?

[dubnde]

So that we can check for these problems as soon as we receive the product.

 

[-aggie-]

Why a test? If it doesn't bother you fuhgetaboutit.

 

[Andrew K.]

Step 1: Turn on your iPhone 4

Step 67: Look at it, is it yellow anywhere?

Step 3: If so take it back

Step 34: if not your fine.

Step 12: Done

Step 9: Make a sandwich

 

[celticpride678]

Go into the Mail app and see if you can see anything.