Re: How to delete a sim

I don't know if you mean an individual sim or save data but for save data, follow these steps:

1. On the home screen, select "My Games & Apps".
2. On the left menu, choose "Games".
3. Select the game you want to edit and press the menu button on your controller. 
4. Once you've done this, choose "Manage game".
5. Choose which profile's saved data you would like to edit.
6. Select where you would like to delete the saved data from and follow the on-screen prompts.