I just got my new iPhone 8 last Wednesday as a birthday present as well as a new protective case that basically covers the entire screen. I noticed, while using my new iPhone 8, that VoiceOver won't inform me of new notifications when I have my iPhone display off. I tried turning on always speak notifications and this doesn't make any difference.
This only occurs when my new case is covering the display, but once I uncovered it, VoiceOver behaves normally. This doesn't occur with my old iPhone 6, which also use a similar protective case that covers both the front and the back of the phone.
I really wonder what could be causing this, as I would like to be informed of new notifications without having to uncover the front screen.
P.S 'Hey Siri' also don't work when my front screen is covered; once again my old iPhone 6 doesn't have this issue, even with a similar protective case.