Apple's 2017 iPad lacks always-on 'Hey Siri' support, despite inclusion of M9 chip
While Apple highlighted the A9 and M9 chip combination as what makes "Hey Siri" possible on battery power in the iPhone 6s and iPhone SE, the 2017 fifth generation iPad with the same chip combination lacks the ability.

Though the new iPad launched in March, the lack of always-on "Hey Siri" support has gone largely unnnoticed Absent even on the A9X powered 12.9-inch iPad Pro, the only iPad model the feature is currently available on is the 9.7-inch iPad.
The absence is confirmed by a note in the fifth-generation iPad's Settings menu, which states the feature is only able to be used when the iPad is plugged into an external source of power.
Always-on "Hey Siri" was first introduced with the iPhone 6s and iPhone 6s Plus. Apple claimed that the feature was made possible by the special low-power processing of the M9, which allows "Hey Siri" voice controls can be invoked without touching the device or plugging it in.
It remains unknown why Apple hasn't added always-on "Hey Siri" support for the 12.9-inch iPad Pro, and Apple has not responded to requests for comment about the situation. Beyond the iPhone 6s series, iPhone SE and 9.7-inch iPad Pro, the "Hey Siri" command can also be used with the Apple Watch, but users must first raise their wrist to activate the screen before speaking.

Though the new iPad launched in March, the lack of always-on "Hey Siri" support has gone largely unnnoticed Absent even on the A9X powered 12.9-inch iPad Pro, the only iPad model the feature is currently available on is the 9.7-inch iPad.
The absence is confirmed by a note in the fifth-generation iPad's Settings menu, which states the feature is only able to be used when the iPad is plugged into an external source of power.
Always-on "Hey Siri" was first introduced with the iPhone 6s and iPhone 6s Plus. Apple claimed that the feature was made possible by the special low-power processing of the M9, which allows "Hey Siri" voice controls can be invoked without touching the device or plugging it in.
It remains unknown why Apple hasn't added always-on "Hey Siri" support for the 12.9-inch iPad Pro, and Apple has not responded to requests for comment about the situation. Beyond the iPhone 6s series, iPhone SE and 9.7-inch iPad Pro, the "Hey Siri" command can also be used with the Apple Watch, but users must first raise their wrist to activate the screen before speaking.
Comments
Good catch BTW.
my favorite is when a character in a show or on a podcast or radio or whatever says, "hey (s-word)" and then everything responds. I love it.
Differences between models doesn't mean "Fragmentation! Fragmentation!"
Good catch BTW.
notnal Siri use, even while using the in-car mic while driving, is close to perfect regarding understanding, so I guess it's nothing to do with pronunciation. I feel that every now and then disabling and re-enabling the feature helps - for a while.
Strange.
I think we're being sold "star trek computer" but being given babbys-first-voice-recognition.
It may have uses for accessibility reasons , but the last thing you need is a TV program going "Siri, call 911" and having millions of 911 calls go out.
It's a blackhat's fever dream of being able to get millions of devices to do something malicious without confirmation.
Lol, I think your exaggerative hyperbole would be more accurate if you said "dozens", instead of "millions"...
Haven't you people read 1984?
I guess it is time for the clock to strike 13.
sorry, but in my home nothing will be on like this ever.
The day that 'Hey Siri' or whatever gets a response is going to be a bad, really bad day for the bit of kit that responded. I have a 14lb sledgehammer ready to do it some damage.