How does Samsung mobile phone set the weather forecast to the desired city as the home page?

According to your description, if you want to set your city as the front page of the weather forecast, you can try the following:

Step method: Click the left key-Add -Widget 1) on the desktop. First, select the screen to which you want to add the weather widget, hold down the screen with two fingers and slide to the middle, then click the widget. 2) find the weather widget and click the > icon, then hold down the weather widget to hover it. 3) After dragging the weather widget to the screen, release your finger, and then tap here to add a city. 4) Enter the city to search in the input box, and then select the city. After the above operations are completed, the weather conditions of the added cities can be displayed on the screen. I hope I can help you.