delete checked items from todo list made in notes on iPhone 11

Hello DonaP13,

Welcome to Apple Support Communities. It looks like you're having a question about removing a checked item from to-do list on Notes on your iPhone, and we'd like to help.

In order to move the checked items to the bottom automatically you want to make sure that you enable this in your Notes settings as follows:

Go to: Settings > Notes > Sort Checked Items > Automatically.

Also, check out this helpful link:

Create a to-do list with Notes

We hope this information is useful. Kind regards.