Overview
- The fourth developer beta of iOS 27, released Monday, contains new Battery Health strings that refer to “the batteries” in an iPhone instead of a single battery.
- Macworld discovered the strings and MacRumors verified they appear in the beta, adding to earlier iOS 27 code that mentioned fold states and hinge angle detection.
- Leaked regulatory details and supply‑chain reports previously described two internal cells with about 1,921mAh and 2,962mAh capacities for a combined roughly 4,883mAh pack.
- Some of the new strings mention verifying individual cells and replacing batteries through an Apple Authorized Service Provider, which could mean separate servicing or tracking of each cell.
- Apple has not confirmed a foldable iPhone and analysts note the plural wording could refer to other setups such as external MagSafe batteries, so the evidence is corroborating but not definitive ahead of a likely September announcement.