So I got an iPhone 6s Plus at T-Mobile yesterday and I have noticed that there is a very light yellowish tint at the top of the screen and I want to know if this is common on the 6s or is it a bad thing and will cause problems the thing is I don't want to take it back to T-Mobile because they will replace it for a refurb one and I don't like having refurb devices pls help and I will keep an eye on the yellowish tint if it gets worse. And the tint is only there one on a almost low brightness but on full brightness I cannot notice it.

