How does Samsung s8 put the weather forecast on the lock screen?

Just use the desktop widget to add the weather component.

1. Close the home screen diagonally to the middle with two fingers.

2. Click the widget on the screen.

3. Slide the screen left and right to find the weather widget, hold it down and drag it to the home screen, and then release it.

4. Click Add City on the weather widget.

5. Enter the city you want to add in the input box. Take "Beijing" for example.

6. After the above operations are completed, the weather situation of the city you added can be displayed on the main screen page.

If you want to delete a desktop gadget, just hold down the icon, drag it to the trash can, and then let go.