But perhaps more interesting is the fact that Apple also published a new whitepaper — “Longevity, by Design” (PDF link) — that explains “the company’s principles for designing for longevity.” I’m sure there’ll be a lot of analysis about every page, but within the paper is actually some news: Apple says that later this year, it will extend more software features to third-party iPhone components.

True Tone, the feature that adjusts an iPhone display’s white balance to better match your environment, has typically been disabled whenever a third-party replacement screen is detected by iOS. But soon, Apple will allow customers to enable True Tone “to the best performance that can be provided.”

The company notes that the result might not be up to its usual standards since True Tone depends on server-side calibration that varies by each individual device and “accurate communication between a product’s display and light sensors,” which can’t be guaranteed with a non-OEM component. Customers “will be able to deactivate True Tone in Settings if the display does not perform to their satisfaction.”

Battery metrics are also coming to third-party batteries. Here’s the relevant section from the whitepaper on that, and I’ve emphasized the newsy bit:

Currently, battery health metrics such as maximum capacity and cycle count are not presented to consumers whose devices have third-party batteries. This is because the accuracy of these metrics cannot be verified by Apple. In fact, an Apple internal analysis has found that some third-party batteries sold as new are actually secondhand, with battery health metrics manipulated to appear as new. In an effort to improve support for third-party batteries, starting later in 2024, Apple will display battery health metrics with a notification stating that Apple cannot verify the information presented. 

The whitepaper underlines how wary Apple is of third-party batteries. It includes data on many tests that led to failures — sometimes resulting in fire or explosions. “We encourage all consumers to confirm that the product meets stringent safety requirements,” the document reads.

Presumably “later in 2024” means that iOS 18 will be required to get this expanded software support for third-party replacement parts. The next big update is due to enter public beta testing sometime next month before a full release in the fall.

Beyond iPhones, Apple is addressing some other long-running criticisms of its self-service repair program. Crucially, obtaining parts in the first place will get much simpler. The whitepaper says that “customers and service providers will no longer need to input a device’s serial number to the Self Service Repair store to purchase a new part for most repairs.”