Is the faint line on iPhone 15 Pro Max volume button normal?

The line is barely perceptible and was likely caused by the the line in middle of the volume button in the case you're using. Normal or not, it's not an issue and not one Apple would replace a phone over as cosmetic issues are not covered under the standard iPhone warranty.

hamzashakeel477 wrote:

"Thanks a lot! I actually do use a case but it's not a hard one, and the line was visible right out of the box. I just wanted to be sure whether it's part of the design or something unusual. Really appreciate your input!"

So kindly confirm one last thing: Is this line a normal part of the button or body finish and found on other iPhone 15 Pro Max units too?

I can't confirm anything. That would require that I have looked at many other iPhone 15 Pro Max volume buttons. I certainly have not done that. We are ALL users here on this user to user only forum. We don't work for, nor are we associated with Apple in any way. And iPhone 15 Pro Max was discontinued by Apple in September 2024. It's not very likely you bought this phone from Apple within the last 14 days. They literally stopped selling them 8 months ago. I suppose it's possible you bought it from someone else recently and if so, you can ask them about their return window. Or you can just not worry about it as the photo you showed is inconsequential. It won't affect the button's primary function. It won't cause you to lose any trade value when it's time to trade it in. It's hardly noticeable and you even admit you use a case on your phone, so it's not something you'll see when the phone is in its case, which I assume is pretty much 100% of the time.

hamzashakeel477 wrote:

"Thanks a lot! I actually do use a case but it's not a hard one, and the line was visible right out of the box. I just wanted to be sure whether it's part of the design or something unusual. Really appreciate your input!"

So kindly confirm one last thing: Is this line a normal part of the button or body finish and found on other iPhone 15 Pro Max units too?

It’s part of the design, won’t impact functionality of the device, and if you look closely, you’ll see the other three.

A case didn’t make those lines. They’re built into the device itself. If you run over them with your fingernail you can feel them, and they certainly don’t disappear when rubbing them.

If you purchased it directly from Apple, you have 14 days to return it for a refund.

If it bothers you that much, maybe you should do so.

I have it too on a brand new iPhone 16. Not a big deal to me…

Edit: In fact, I have four. One in each corner! 🏆

What's not normal is obsessing other something you can barely see.