Lightning page visibility for mobile users
Key Takeaway
A visibility rule with a Device filter shows a component only in the experience you pick, such as a phone or a desktop. A tablet counts as a phone in the Salesforce mobile app, but as a desktop in a browser.
Lightning app pages and record pages appear in both Lightning Experience and the Salesforce mobile app, so admins need ways to control what mobile users see. Visibility rules in the Lightning App Builder show or hide components on a page based on conditions such as the user's device. For Lightning app pages, activation settings also decide whether the page shows up in the mobile navigation at all.
Customizing and previewing Lightning pages
You customize and preview Lightning app pages and record pages in the Lightning App Builder. There, you can mark certain components as mobile-only or desktop-only. When you need more than a preview, test the page in the Salesforce mobile app itself to confirm the mobile experience.
To create and save Lightning pages, you need the "Customize Application" permission.