How to Change Safari’s Default Search Engine
To change the default search engine used by Safari on iOS devices:
Search Settings in Safari
The Safari Settings screen includes other options you may want to use with your new default search engine. You can toggle each of these options on or off:
Search Engine Suggestions presents suggested search terms as you type, obtained from the default engine.Safari Suggestions offers suggestions as you type, derived from a combination of sources including iTunes, the App Store, and the internet as a whole. This option also sends some of your search data to Apple, including which suggestions you selected.Quick Website Search speeds up search results. When you search within a particular website, Safari stores that data for future use, allowing you to then search that site directly from the Smart Search Field in subsequent browser sessions.Preload Top Hit loads pages quickly. Safari attempts to determine the best search result as you type, preloading that page ahead of time so that it renders in an instant if you select it. The determination process combines your browsing history and saved bookmarks.
The Search Settings screen contains several other options related to Safari on iOS devices, although not all of them are search-specific. In this screen, you can:
Enter or choose autofill information to fill in forms on websites. Activate frequently visited sites in Safari. Opt to block pop-ups. Block cookies. Prevent cross-site tracking. Enable fraudulent website warnings. Ask websites not to track you. Allow websites to check if you have Apple Pay up on your device. Clear your history and website data.