To close all tabs on your iPhone, the method depends on the browser you are using. Here's how to do it for the most common browsers:

Safari

1. Open the Safari app on your iPhone.
2. Tap and hold the Tabs icon (two overlapping squares) in the bottom-right corner.
3. A menu will appear with the option Close All Tabs. Tap that.
4. Confirm by tapping Close All Tabs again in the popup.

This will close all open Safari tabs at once

Chrome

1. Open the Chrome app.
2. Tap the Switch tabs button at the bottom (a square with the number of open tabs).
3. Tap Edit in the lower-left corner.
4. Select Close All Tabs.

This closes all Chrome tabs simultaneously

Google Search App

1. Tap the square icon in the lower right corner showing the number of open tabs.
2. Tap the three dots in the upper right corner.
3. Select Close all open tabs.
4. Confirm by tapping Close all.

This closes all tabs in the Google Search app

. If you want to close tabs in private browsing mode in Safari, you need to repeat the process while in that mode, as tabs are managed separately

. This method quickly clears all open tabs, helping you maintain privacy and improve browser performance without closing tabs one by one.