[linsiris]

So, I usually have at least 2 of my devices in different languages. Lately I had my iPhone in spanish (Siri included) since I needed to search and call ans stuff everything in spanish and my iPad in English mostly to compare or when I wanted it to find me something in English.

As of iOS 11 I noticed I can't. My iPad system language is still im English so I set Siri in english as well. Then I noticed I tried activating Siri in spanish in my iPhone and I couldn't, so after checking Siri's language I noticed it was set in english when I didn't.
So I open both devices Siri's settings, and if I change one language the other instantly changes as well. That's new compared to iOS 10 :-/

Yeah, is a thing if you speak more than one or two languages.
Also it'd be nice if you could set one keyboard to be used in two similar languages (like SwiftKey and others do)
Always noticed it's not so friendly for multilingual people.

[njlx2016]

I think in iOS 11 Siri now syncs with iCloud. I noticed this when I turned off Siri and later re enabled it, "Hey Siri" was already set up for me.

[nikkisharif]

Turn Siri off in iCloud & you should be fine.

[linsiris]

Turn Siri off in iCloud & you should be fine.

Yeah, that worked, Thanks