Apple - My iPhone settings are not showing Siri
This works for iOS 11 and earlier (Restrictions were changed in iOS 12):
The easiest way to get Siri back (without doing a Soft Reset or Reset All Settings), do this:
- Go to Settings→General→Restrictions
- Enable Restrictions; give it a password.
- Disallow Siri & Dictation.
- Return back to General settings.
- Go back to Restrictions, putting in the password.
- Allow Siri & Dictation. Go back to Settings and Siri & Search should now be available.
- Disable Restrictions.
This worked on an iPhone 6s Plus on iOS 11.2.5.
This issue persists after updating to ios 11 also, so I just did a reset all settings and Hey Siri option came back.
PS: the reason I did reset all settings as because springboard kept on crashing almost everyday which became annoying.