The phone screen contains a lot less elements, so navigation should be much easier, and the information should be as concise as possible, but informative. If on the desktop screen a person simultaneously sees the menu, filters, part of the personal account and advertising banners, then in the mobile version you will have to select only priority elements

Gestures and taps control every movement, so clickable elements are made larger in mobile versions so that they are easy to hit and swipe

Heavy files and media slow down the overall performance of the server and make the application slow. The app should send as few API calls as possible so as not to delay the user

If a person sits at a computer in a limited number of places, then with a phone he can be anywhere and with different Internet speeds. Therefore, in the mobile interface, they add only basic information, additional features and provide a quick path to the main functions. For example, in the interface, you can often choose a “light” or “dark” theme for different times of the day or pre-load materials in case there is no Internet

Colors should be diversified and natively tell the user which elements are clickable and which are not. Color is very convenient to distinguish between elements of different meanings, use this. Fonts should not be unreasonably small. For the entire application, it is desirable to use no more than 5-6 types of one font and 4-5 colors. This is enough to set the accents and create a neat interface.

The logo should not be duplicated on all application screens. It is enough that your brand will be indicated on the service icon and on the loading screen. Do not overload the visual component