"Hey Siri" not working on iPhone 7 Plus

Yep. Same iPhone 7 here. Siri has never worked. The dictation works (badly), but 'Hey Siri'.. never. Store hardware tested and all fine. Said I'd need to send it off, but couldn't be bothered with the hassle. I note that there's been a bug fix on the latest iOS update which specifically states that it solves a known problem with iPhone 7 and 7plus devices where Siri isn't working. I did the update. I went into the menu to set up hey siri again, and the first time it actually recognised my voice and said all was successful. I then tried to say 'Hey Siri'... and guess what... nothing. I then turned hey siri off/on again and went through setting up and that time it didn't recognise me at all for the setup, i.e. whatever bug fix they think they've solved.. has not solved the problem. I note that there are blogs where other people have the same issue. Have given up. All else on the phone is ace. Just a shame something soooooo expensive fails to work 100%... ho hum

NNeeds to be plugged into power as well as have an active internet connection either wifi or cellular data.

CHeck this out. Use Siri on your iPhone, iPad, or iPod touch - Apple Support

iPhone 8+, IOS 11.0.3. Hey Siri had been working, then just stopped..Tried all the above suggestions with no luck. Then did a hard reset and it is now fine.

Yep. Same iPhone 7 here. Siri has never worked. The dictation works (badly), but 'Hey Siri'.. never. Store hardware tested and all fine. Said I'd need to send it off, but couldn't be bothered with the hassle. I note that there's been a bug fix on the latest iOS update which specifically states that it solves a known problem with iPhone 7 and 7plus devices where Siri isn't working. I did the update. I went into the menu to set up hey siri again, and the first time it actually recognised my voice and said all was successful. I then tried to say 'Hey Siri'... and guess what... nothing. I then turned hey siri off/on again and went through setting up and that time it didn't recognise me at all for the setup, i.e. whatever bug fix they think they've solved.. has not solved the problem. I note that there are blogs where other people have the same issue. Have given up. All else on the phone is ace. Just a shame something soooooo expensive fails to work 100%... ho hum

Wife was having the same issue on her 8+, and a hard reset did the trick.

Note, that they've changed how to do a hard-reset with the 8 (and I'm assuming the X). Instead of holding Home+Power, you do the following:

1. Click Volume Up
2. Click Volume Down
3. Hold down Power (for about 10 seconds) until the screen goes black
4. Wait for reboot

Yep. Same iPhone 7 here. Siri has never worked. The dictation works (badly), but 'Hey Siri'.. never. Store hardware tested and all fine. Said I'd need to send it off, but couldn't be bothered with the hassle. I note that there's been a bug fix on the latest iOS update which specifically states that it solves a known problem with iPhone 7 and 7plus devices where Siri isn't working. I did the update. I went into the menu to set up hey siri again, and the first time it actually recognised my voice and said all was successful. I then tried to say 'Hey Siri'... and guess what... nothing. I then turned hey siri off/on again and went through setting up and that time it didn't recognise me at all for the setup, i.e. whatever bug fix they think they've solved.. has not solved the problem. I note that there are blogs where other people have the same issue. Have given up. All else on the phone is ace. Just a shame something soooooo expensive fails to work 100%... ho hum

It only works when it is plugged i

Same problem here. Latest IOS, iPhone 7 Plus, Siri is unstable... sometimes it works and replies to my “Hey Siri” some times it doesn’t.

When it does, there are times that it will close the mic just after opening Siri’s screen, then I have to say “Hey Siri” again, for the mic to open.

Sad situation.

So, the saga continues over a year since I bought it. A few weeks ago there was an iOS update and Siri started working (quiet "yeah!"). Now.... stopped working again for no reason. Never used it anyway. Voice recognition dire. Even putting in phonetic names rarely works. My other half is called Tamara. Try that one! No contacts called tomorrow apparently. Even using Tam as phonetic name. Nope. Recognised it as something rude and said "that isn't very nice Martin" Lol. I give up. No Siri and voice recognition about as useful as a chocolate teapot.

MY apologies

I've got a 7+ . But Het Siri isn't working . I restored the phone with itunes but it didn't work .