In iOS, you need to turn off 'Spotlight suggestions' and 'Bing Web Results'.
This is documented in the 'About Spotlight Suggestions & Privacy' link at the bottom of the Settings->General->Spotlight Search panel. It's a shame that there's no switch in the actual Privacy panel though.
This is documented in the 'About Spotlight Suggestions & Privacy' link at the bottom of the Settings->General->Spotlight Search panel. It's a shame that there's no switch in the actual Privacy panel though.