How to change your default search engine on iPhone

You can select an alternative search engine as the default to search for content on the web. It’s a single setting: you pick the search engine you want to set as the default, and that’s the one your searches use.

1. Open the Settings app on your iPhone.
2. Tap Search, then tap Search Engine.
3. Tap the search engine you want to set as the default and then tap the Back button.