Here are the steps to close all tabs on iPhone using Google Chrome:-
1. Launch Google Chrome on your iPhone.
2. Tap on the tab icon to view all the open tabs.
3. In the tab management screen, tap on Edit for additional options.
4. Select "Close All Tabs and Groups" to close all open tabs in one go.
If prompted, confirm the action.
5. Upon completion, your tab page shall be totally blank to provide you with a brand-new browsing experience.
Read More:- techzeel.net/how-to-close-all-tabs-on-iphone/