Follow these steps to open incognito mode on your mobile device:

For Chrome on Android:

1. Open the Chrome app.
2. Tap the three dots in the top-right corner.
3. Select New Incognito Tab from the menu.
4. A new incognito tab will open, indicated by a dark background and the incognito icon.

For Safari on iPhone:

1. Open the Safari app.
2. Tap the tabs icon (two overlapping squares) in the bottom-right corner.
3. Tap Tab Groups or the number of tabs, then select Private.
4. Tap Done or the + button to open a new private browsing tab.