To reset the layout of your iPhone, you can follow these steps:
1. Unlock your iPhone and go to the home screen.
2. Tap and hold any app icon until all the icons start jiggling and the "Edit Home Screen" mode is activated.
3. While in this mode, you can rearrange, delete, or move app icons on your screen.
4. To reset the layout, tap the "X" on the top left corner of an app icon to delete it. Alternatively, you can move an app icon to a different screen or folder by dragging it to the edge of the screen or on top of another app icon.
5. Continue rearranging or deleting icons as desired until you achieve the desired layout.
6. Once you've made all the necessary changes, press the home button (or swipe up from the bottom edge on newer iPhones without a home button) to exit the "Edit Home Screen" mode and lock your changes in place.
7. Your iPhone's layout is now reset and organized according to your modifications.
Remember, resetting the layout will not delete any apps or data from your iPhone; it only rearranges and organizes the app icons on your home screen.