Quality and good engineering is one of the main reason you people cite for buying Apple in this very thread.

Now you're suggesting that there ought to be a "warranty void if app is installed" sticker on Apple's supposedly premium hardware which is running Apple's supposedly hyper-secure operating system, otherwise some unwashed piece of software is going to damage it?

No such requirement exist on macOS, for obvious reasons. The double-think in these threads is astounding, repent.

I don’t have any skin in the game as far as Apple’s security reputation goes. No technically competent person would believe that malicious code running on a machine can be contained.

I don't believe there's such a thing as perfect security, I'm just astounded that someone who's not (1) a senile lawmaker being influenced by lobbyists, or (2) holding significant shares of AAPL; would even suggest that voiding warranty is a reasonable course of action if third-party software is installed on a general-purpose computing device.

Furthermore, claiming that Apple's review or signing processes are effective measures for preventing malware has no basis in reality. Apple has reviewed, approved and signed malware before, and they'll do it again because detecting malware is borderline impossible.

They do not possess magic powers that can suss out malware any better than industry average because (1) automated virus scanning is almost entirely ineffective against new malware and (2) they're not paying a team of specialists to reverse engineer and analyze app updates.

As long as Apple can prove that the specific third party app caused whatever damage the warranty was supposed to be covering, sure.

Plenty of viruses cover their tracks, and it is impossible realistically to protect a computer from malicious code that is run locally.

No, for the same reason why I wouldn't be okay with a car manufacturer voiding the warranty due to use of third-party gasoline.

Gasoline quality standards are regulated (in the US at least). Also, nobody designs malicious gasoline to intentionally attack your car.

I get the thrust of your argument but I don't think that's a good analogy. Bad fuel can cause physical (including catastrophic) damage to the engine. Bad software cannot do something similar to the phone. At worst you will have to reinstall the OS.

Now I do agree that bad software can wipe all your data or hold it hostage, but Apple currently provides no such guarantees that software downloaded from the App Store won't do that.

How would that void a warranty? By the way those stupid stickers they put over screws also don’t void warranties either. Just because a corporation says something doesn’t make it true.

They used to, or perhaps there used to be a case. Thankfully right to repair laws prevailed over those silly notions.

In the US, the Magnuson-Moss Warranty Act of 1975 prevailed over those silly notions.

https://en.wikipedia.org/wiki/Magnuson%E2%80%93Moss_Warranty...