iOS 27.2 beta references option to overwrite iPhone storage with blank data after erasing

iOS 27.2 beta code references a new reset option that overwrites all iPhone storage, including unused space, with blank data. The feature appears limited to devices for China due to the GB 46864-2025 standard taking effect on January 1, 2027.

• Option overwrites all memory, including unused space, with blank data
• Apple warns process takes longer than a normal reset and may affect lifespan
• Current reset destroys encryption keys, making data inaccessible
• Support also mentioned for iPad, HomePod and Apple Vision Pro