How to display the weather notification when making a call on a Samsung mobile phone?

First select the screen where you want to add the weather widget, hold down the screen with two fingers at the same time and slide toward the middle, then click on the widget.

Find the weather widget, click the > icon, and then press and hold the weather widget to make it suspended.

After dragging the weather widget onto the screen, release your finger, then tap Tap here to add a city.

Enter the city you want to find in the input box, and then select the city. After completing the above operations, the weather conditions of the added city will be displayed on the screen.