Recently, with the rollout of Apple’s iOS 26.3/26.4, some iPhone users have encountered troubling issues after updating, including black screens, touch unresponsiveness, and device power failures. According to market feedback, this problem is concentrated among iPhone 11 models using third-party screens. After attempting the system update, while the device appears to power on normally, the screen remains completely black, causing the phone to enter a "seemingly dead" state and severely impacting daily use.
In response to this compatibility anomaly, JH, a domestic third-party screen manufacturer, acted swiftly. Its R&D department immediately conducted systematic testing across its entire lineup of LCD screen products. JH recently issued an official announcement stating that all LCD screens bearing the JH brand perform perfectly when adapted to the iOS 26.3/26.4 system, delivering smooth operation and full functionality. This means that whether it is the iPhone 11 or other iPhone models, as long as the device has a JH LCD screen installed, users can safely upgrade to the latest system without worrying about black screens, touch unresponsiveness, or power failures.
It is understood that the root cause of this black screen issue lies in the new system’s adjustment to the communication protocol for display driver chips, which prevents the underlying firmware of certain third-party screens from being correctly recognized. Through rapid testing, JH ensured that all its products are fully compatible with the latest system, making it the first third-party screen manufacturer on the market to publicly announce perfect support for iOS 26.3/26.4 upgrades.
For users who are already experiencing black screen or touch unresponsiveness issues, it is recommended to first attempt a forced restart (quickly press the Volume Up button, then the Volume Down button, then press and hold the Side button). If the issue still cannot be resolved, the most reliable solution is to contact a professional repair service and replace the screen with a JH-certified screen purchased through official channels, ensuring perfect compatibility between the system and hardware.