There are two ways to change them. One is a relatively simple method built into iOS 18 and the other is a bit more advanced ...

It effectively limits how apps on your phone can use data ... Depending on the specific brand of Android phone you are using, the mobile hotspot icon can be slightly different.

The Pixel Launcher is preparing to let you customize the shapes of home screen icons, and we have an early look at this new feature.

and folder icons, not recent apps or settings menus. Customization has been one of the biggest reasons we love Android. Irrespective of which phone you're using, you're free to choose a launcher ...