Apple's iOS 26 beta version has surfaced compatibility issues with third-party batteries, leading to abnormal battery readings and incessant restarts for some users post-upgrade. Models affected span from the iPhone 12 mini to the iPhone 14 Pro. This problem could stem from misjudgments by the battery firmware verification mechanism. For the time being, downgrading the system or replacing the original battery serve as temporary fixes. This failure stands in contrast to Apple's commitment to bolstering support for third-party accessories and has reverberated across the repair industry. Apple has yet to issue a statement, and it is advisable for affected users to postpone upgrading their systems.