Code in the first developer beta of iOS 27.2 describes an erase that does not simply delete an iPhone’s data but writes blank data across the entire drive, including the parts not currently in use, and the strings tie it to devices in China. 9to5Mac, which read the beta, published the finding on September 16; Apple has announced nothing, and the option appears in no release note.
The reason such a feature would exist, though, is a matter of public record. On December 2, 2025, China’s standards bodies issued a mandatory national standard, GB 46864-2025, covering how information must be cleared from electronic products sold there. It takes effect on January 1, 2027.
What the beta strings describe
The report places the strings alongside Erase All Content and Settings, offering to overwrite the whole of the device’s storage with blank data once the normal erase has run. A warning written into the code itself says the process “may take longer than a standard erase and could affect the device’s lifespan.” The same references are not confined to iPhone, and reach iPad, HomePod and Apple Vision Pro.
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Treat that for what it is. Strings in a first developer beta are a plan, not a product. Features described in code have been cut before shipping, have arrived a version later than the one they were found in, and have shipped with different limits than the code implied. Nothing here tells you the option will reach iOS 27.2 final, that it will still be restricted to China if it does, or that it makes data unrecoverable. That last claim appears neither in the code nor in the Chinese standard.
GB 46864-2025, the standard behind it
This half of the story you can check yourself. GB 46864-2025 is a mandatory Chinese national standard titled, in its English rendering, “Data security technology” and “Technical requirements for information sanitization of electronic products”. It was issued on December 2, 2025 by the State Administration for Market Regulation and the Standardization Administration of China, with an implementation date of January 1, 2027.
Its scope is electronic products with non-volatile storage media manufactured and sold in China. Products that handle state secrets are excluded. The obligations fall on three groups: the manufacturers of those products, third parties who build information erasure tools for them, and the recycling operators who wipe second-hand devices.
Two details explain the shape of what was found in the beta. First, a manufacturer is expected to provide a built-in erasure function, or else supply an external tool, recommend a specific third-party tool, or offer a free erasure service. A setting inside the operating system is the cleanest way for Apple to meet that. Second, for semiconductor storage of the kind used in phones, one approved sanitization method is overwriting the storage that holds user data at least once with meaningless data, which is precisely the behavior the strings describe. The standard also requires recyclers to keep their erasure records for at least three years.
Why a full overwrite costs something
Writing across every cell of a drive is slow, and flash memory has a finite number of write cycles in it. That is the trade the in-code warning names: more time, and some wear. On a 1TB iPhone, an overwrite pass is not a thirty-second operation, and it is not something you would want to run casually before every sale.
Which is also why a separate option makes more sense than a change to the erase everyone already uses. If the feature ships, the ordinary Erase All Content and Settings would stay the fast default, with the overwrite there for people who need to satisfy a rule rather than satisfy themselves.
Selling an iPhone outside China
Nothing in the beta changes how you should hand on an iPhone anywhere else, and the step that actually matters has not moved: sign out of iCloud and turn off Find My before you erase, so the device is not left locked to your Apple Account. That is the part people get wrong, and it has nothing to do with how thoroughly the drive is scrubbed. Neither Apple nor the Chinese standard says anything about what can be recovered from an erased iPhone today, and nobody has demonstrated a recovery.
The standard’s own deadline is the thing worth holding on to. January 1, 2027 is more than a year out, which gives Apple room to ship this in iOS 27.2, in a later 27.x release, or not in this form at all. For more on what did ship on September 14, see our iOS 27 release guide, and our iPhone 18 Pro overview for the hardware it arrived on.
For the complete picture, see our guide to everything new in iOS 27.2 beta 1.
