iOS 11.4 針對 HomePod 加入 AirPlay 2 和立體聲配對、修正黑點 bug、支援 iMessage on iCloud 等新功能，但是這個版本的 iOS 也出現多個問題，除了電力容易被榨乾之外，連相機也出現問題。
不少果粉最近透過 Twitter 發帖，指升級 iOS 11.4 後相機 App「黑屏」或出現嚴重失焦問題。其中一名 Twitter 用戶 Wizard Design 投訴 iPhone 6/6s/7 升級 iOS 11.4 之後相機 App 黑屏，這情況已經很多次，只能重新開機才能夠重新使用相機，質問究竟發生什麼事情。
Black screen on apple iphone 6, 6s and 7! I have encountered many many times with a blackscreen when I wanted to use my camera. and then I have to reboot the phone to be able to use the camera again. what is going on? @AppleSupport pic.twitter.com/s2w3MN0wRa
— Wizard Design 👑 (@wizard_design) June 18, 2018
另一名 Twitter 用戶指 iOS 11.4 的相機問題在相機 App 處，在 Facebook app 使用相機卻沒有這個問題。
Anyone figure out how to get their camera to work after the latest #ios update? My camera works in Facebook but not on my #iphone7plus #apple #appleios #iphone
— falulu (@mistressfalulu) June 17, 2018
不止「黑屏」，也有果粉為 iPhone 升級 iOS 11.4 之後，相機 App 的預覽影像模糊變形，色彩出現嚴重問題。
Updated my daughter’s iPhone to iOS 11.4. Camera shot. Still working with Apple Support on this but highly doubt this will get fixed. Sad 🍎 @briantong pic.twitter.com/V6Xk4x679b
— Niles (@nslemmer) June 12, 2018
This is what my camera does after the iOS 11.4 update… what’s up??? @Apple @AppleSupport pic.twitter.com/f5KrUl92lX
— Julie (@juliepie_) June 13, 2018
有關 iOS 11.4 相機問題，蘋果其實已經知情，Apple Support 在 Twitter 解答另一位受害者有關相機 App「黑屏」問題時指，這不是正常的情況，蘋果已經組織團隊解決這個問題，Apple Support 分享了一個連結，希望用戶回報問題是否已經解決。
Thanks for reaching out to us about the camera. That’s not normal behavior, so you are right to be concerned. We’re ready to team up and solve this together. Work through the steps in this link, and let us know the results. Thanks! https://t.co/dJ02ReEj2u
— Apple Support (@AppleSupport) June 18, 2018
