Rethink Your Page Layouts for Mobile
For example, let’s say you have a custom account page layout for Express Logistics and Transport, which has 32 standard and custom fields. That may not seem like a lot of fields, but in a mobile context, fields add up quickly. In the full Salesforce site, the account detail page for Express Logistics and Transport would look like this:

In the Salesforce app, the same account detail page looks like this:

We only show three here, but there were five pages of scrolling, and that’s from a page layout with only 32 fields! If you were a mobile user trying to find specific fields in a record detail with dozens of fields on your phone, you’d have to scroll... and scroll... and scroll. It’s not the best user experience and it’s definitely not good for your users’ productivity.
You have two options for handling page layouts for your mobile users: re-engineer your existing page layouts, or create new page layouts that are mobile-friendly from the outset.